heat-pump-guide-2008[1]

8/7/2019 Heat-Pump-Guide-2008[1]

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Heat Pump System

The Guide


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The golden age of cheap energy is over...

The need for renewable energy, ground source heat pump and solar panels in particular hascome to the forefront in recent years. Since the period 2006, which we have experienced asoaring energy bills from home, industry, hotel and public building. It is not only due toKyoto treaty where EU states are obligated to restrict greenhouse gas emission but cheapenergy is no longer available. It also the period where Bulgaria government no longersubsidised the electricity and recently added VAT, because of the EU directive. According toEU fact sheet, the Bulgaria electricity tariff is only 50% of the EU wholesale market, whichsuggest a scope for a further rises in not to distance future.

More people are getting smarter about this and are investing green technology such asground source heat pump and solar panels for their home and commercial building. Morepeople is switching to renewable energy as this is the only way reduced energy consumptionbills while enjoying luxury living.

EnergyFree Technology guarantee of quality

EnergyFree Technology believes in providing free and accurate education to guide peoplelooking for the green technology. This is why we make efforts in our website and public

materials. Unlike other, which focus only to make profits by hard sell, reluctance to providetechnical document and certification, relatively low-standard & potentially unsafeinstallation practice, and worst of all, provide no or little supports if thing goes wrong.

We have identified several heat pump manufactures around the world which offer diverserange of heat pump technology from ultra cheap low quality which may be potentiallydangerous and illegal to install within EU member states (ie lacks CE approval). In general,high specification heat pump equipment (ie Viessmann from Germany) which offers verylong lifetime operation which leads to a lower maintenance cost, hence a better investmentfor commercial or industrial application. On other hand to suit your budget, we cherry pickslow cost, best performing heat pump from several reputable manufacture.

Because of my past career as a senior design technology engineer for Halliburton, Imfamiliar with geological concepts of the soil formation and drilling technology used foroil/gas industry. Im also experts with theoretical & practical science and professional designengineering for any type of project including heating and cooling architect / engineeringfrom residential home to commercial building project.


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Energy Efficiency and Environmental BenefitsSince the heat pump system involves thetransfer of natural heat energy. Nocombustive process occurs except a smallquality of CO2 emissions attributed from

electricity use for operating the GSHP.However, you can sign up for greenelectricity to minimize this.

Heat pump systems are also energyefficient because for every unit of electricity, is used to transfers three tofour times that amount of energy fromthe ground soils into the building.

In other word, when you use an electric heater to keep your house warm, you pay 100 per

month in electric bill along with 100 units of CO2 gas emission goes to atmosphere whichcontribute a long term climate issue. On other hand, with the heat pump system, you payonly 20 per month in electric bill along with less than 20 units of CO2 emission.

Social Benefits

Using heat pump system has a positive impact on society as a whole as they use a significantportion of renewable energy in their operation, have long lives, and are comprised of equipment that can be recycled. The resource is plentiful and readily available from onesown land. The use of the green technology should always be a part of a holistic approach tobuilding design.

Renewable Energy (Green Technology)

Heat Pump System is a renewable energy, because it acquires freeheat energy from natural resource derived from the soils formation,airs or water within lake/river/water table.

GSHP Technology Make Economic Sense

Lower electrical power requirements Secure, stable heat/cool supply for all season. Lower resource intensity Lower maintenance, better investment returns Less susceptible to energy price fluctuations Initial cost is not always higher than conventional

systems and may even be lower.


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Deep Geothermal energyGeothermal energy is the natural heat of the earth.Thermal energy is continuously generated by the decayof radioactive isotopes of underground rocks and is

stored in the earths interior. As such geothermal energy is an inexhaustible supply of heat making it oneof the forms of renewable energy we have at ourdisposal.

The temperature at the earths core is estimated to beabout 4000C. This drops to 1200C in the lava of activevolcanoes and the temperature of thermal springs isapproximately 350C.

Geothermal energy has been used forthousands of years particularly in thecase of hot springs. These have beenused for localized bathing and cookingas well as for creating bathingcomplexes such as those built by theRomans in Bath.

Geothermal energy is currently thirdamongst renewable energy sourcesfor power production in terms of worldwide usage.

Geothermal energy can also be usedfor electricity production whereby aturbine is driven by steam which inturn drives a power generator. This ispopular in Iceland and many otherparts of the world.

The Earth's crust, mantle, and core. Top right: a section through the crust and the uppermost mantle.

To benefits geothermal energy for your project, will requires detailed geological study,project planning, planning permission, government permits and approval. We then moveon into drilling, pipes installation and special equipment to handle hot water safety.


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Shallow Geothermal EnergyHeat is continually supplied to the ground in theform of solar energy. Approximately 46% of thesuns energy is absorbed by the earth. The

remaining 54% is either reflected back intospace or absorbed by the earths atmosphere.At a depth of approximately 5 meter the groundtemperature remains fairly constant, with anaverage temperature between 8C and 15Cyear-round, depending on the local climate,terrain and soil type.

This stored heat energy can be absorbed by aspecialised device called Ground Source Heat

Pump (GSHP for short). This is key equipment that provides both heating and cooling forany type of building, from residential home, hotel, school, apartment block and any typecommercial/industrial building. Also, it can provide hot water for shower and kitchen use.

Shallow Geothermal Energy benefits low cost installation using ground pipe network (moreof this, in the following sections). Because of the lower temperature, it can be used for bothheating and cooling.

Heating Mode

In the heating mode the Earth acts as aheat source, allowing the circulating fluid

to extract natural heat from the Earth andtransfer it to the space where it can beused for heating

Cooling Mode

In the cooling mode, the earth acts as aheat sink enabling the circulating fluid totransfer the excess heat, absorbed by theunit, from the building zones to the earthwhere it is absorbed and stored for futureheating requirements .


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Weather Climate

Varna climate is more extremes by 10C compared to the UK with more temperamentalclimate due to warm current from the Atlantic sea. We had -15C last winter in Varna.

The energy efficient design of the central cooling and heating system is essential to benefitsreduces operating cost and operation durability of the system. A low energy buildingtechnology Prokoncept , play a key parts in keeping cold weather out during the winter andkeeping heat out during the summer season.

The chart on the left is theclimate comparison betweenLondon and Varna. Thecomfort band is between20C-26C as per ASHRAEguideline.

The chart shown averagetemperature of the month,the peak temperature is notindicated.Resource:- BBC Weather.


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Ground Source Heat Pump (GSHP)

We use abbreviated word to refer two types of heat pump installation

ASHP = Air Source Heat Pump: extract heat energy from the air.

GSHP = Ground Source Heat Pump: extract heat energy from the soil.

The GSHP have been in existence since the late 1940s. GSHP use constant temperature of the earth as heat exchange medium. Because of stable temperature, it allows the system toreach high efficiencies of 400%-600% regardless of season. Unlike ASHP, the seasonable airtemperature varies more widely, so they have 150%-250% efficiencies.

The ASHP efficiency depends quite significantly on outdoor air temperature which variesbetween -16C to 39C in Bulgaria (in some cases, depending on model, it discontinues tofunction under extreme temperature, especially during cold winter)

While many parts of the country experience seasonal temperature extremesfromscorching heats in the summer to sub-zero cold in the wintera few meter below theearth's surface the ground remains at a relatively constant temperature. Depending onlatitude, ground temperatures range from 8C to 15C. Like a cave, this ground temperatureis warmer than the air above it during the winter and cooler than the air in the summer. TheGSHP takes advantage of this by exchanging heat with the earth through an equipment werefer it as Ground Source Heat Pump (GSHP). The picture below is the typical GSHPinstallation.

Why we publish this guide?

Many people perceive GSHP makes heat energy out from nothing, more like magic! In fact,it actually transfers heat energy from the ground (soils) or airs. This is the reason why wepublish this guide in plain hard facts, not sale promotion where most website tends toprovides misleading or incomplete information.


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Three basic components of GSHP System

This section describes how the GSHP transfers heat energy in greater details. Below is anillustration of heat energy transfers between soil and building (in this case, underfloorheating, however there are alternative heating system within building for which we discuss

later).

(A) Ground Source Network

The Ground Source Network operates is a form of heat exchanger, it basically transfer heatenergy between GSHP and within the soil formation. The picture shows close-loophorizontal pipe installation. This is where the heat energy within the soil (10C) is absorbedinto the pipes network.

(B) Ground Source Heat Pump

This is a key component of the GSHP system; it designed to processes the heat transferbetween ground pipe network and building. It can either boost or reduces heat to a desiredtemperature depending on heating or cooling mode.

For example during heating operation, it boosts soil temperature from 10C to temperaturelevel of around 45C.

(C) Central Heating/Cooling System,

There are three basic types, depending on investment and type of building:

Underfloor heating, an invisible installation. Generally heating only. HVAC system (air ducts) for heating and cooling. Wall or ceiling mounted fan coils heating and cooling.


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Inside of the GSHP, how it work?We now move on into a brief description about internaloperation of the GSHP equipment.We have animation movies in ourwebsite may better describe theoperation:

RefrigerantThe loops pipes within four blockscontain a refrigerant which is aspecial kind of compoundspecifically design to transfer heatsenergy effectively by changing thephase state between gas and liquidat the certain temperature and pressures.

All modern heat pumps now use latest refrigerant (R407c / R410a) that meet EUs safetyand environmental standard. The earlier compounds (ie R22 type and other HFC type) areozone damaging and are banned from general use.

Evaporation and Condensation process with hot water KettleRefrigerant within the heat pump loop involves quite acomplex thermodynamic operation, so to describe it; Ipresent you an analogy with a kettle you use to make a tea orcoffee. You pour in some cold water into the kettle and turnon the electrics. The electrical energy heats the water which

itself rises the temperature. The water remains in a liquidphase state, until it reaches to boiling temperature (100C).You should notice that kettle is venting misty humid gas forwhich we refer as the steam. This steam is a gas phasestate. This is precisely how the evaporation stage operates asindicated in the above heat pump loop diagram.

When you cool the steam by a cold spoon, it removes the heat energy where the steamreverts back to water. You should notice the water form on spoon surface. Try this simpleexperiment with your kettle, (taking care not to scale your skin). This is a conversion fromgas to liquid phase state. This is what happens at the condenser stage of the heat pump

loop.

Step 1: EvaporatorEvaporator is a heat exchanger where internal refrigerant absorbs heat from the waterpumped from the ground source network. In this process, the refrigerant changes fromliquid to gas phase state.


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Step 2: CompressorCompressor is a special type of pump that compress refrigerant (in gas) to a high pressure.In this process, the temperature is raised to 50-80C. This is most expensive component of the heat pump.

Step 3: CondenserCondenser is another type of heat exchanger which transfer compressed, heated refrigerantinto water for central heating system or hot water supply. In this process, because it givesup heat energy for the central heating system within a building, the gas is condensed backto liquid. The temperature is about 40-70C.

Step 4: Expansion valueExpansion valve is a special valve that reduces the pressure within condenser and allowsfluid to flow back to evaporator. As the refrigerant flow out of the valve, the pressure dropwith temperature close to freezing point.

Step 5: And the loop continue back to Step 1Refrigerant is reheated by evaporator and the process continues from Step 1.

What is heat exchanger?Heat exchanger is a device that exchange heatenergy between two fluid circuits, while avoidingmixture between two different types of fluids, forexample Glycol and cold water.

Still confused? .....dont worry!

Do not worry if above does not make sense, thethermodynamic law of physic is quite complex and itdoes have weird properties about heat transfers, tounderstand them requires good technical background.

We perceive them with our daily experience and acceptthe way it work but difficult to explain what or why theydo this for our next generation kids. This kind of area isfor serious engineer like us to do hard work for you!

What we have demonstrated that a heat pump operateswithin the boundary of the Law of Physic. They definethe way the heat pumps transfer the heat energybetween the soil and the building. In this process, thereare absolutely no magic whatsoever!

You may regard this; quite simply, a heat pump is a box containing a very smart and clevertechnology that do all the energy efficient works while transferring free heating or cooling.


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In essence, the GSHP uses the power of the nature energy from the ground soils to provideyou free heating/cooling energy. It is ultimate clean green technology!

We offer professional friendly service where we assist your project requirement and we doall the technical assessment, design and make proposal of the project. We offer completeinstallation service with our competence team.

Ground Source Network

Ground Source Network is a heatexchanger between soils formation andthe GSHP equipment that provideheating or cooling for any type of building.

Ground Source Network is a most

important consideration for design of the GSHP system because they dependon installation cost and heat transferperformance. The sizing of theinstallation depends on heating/coolingcapacity of the building and the soil type.In general, be reducing the buildingcapacity demands, the smaller theinstallation requirement whichultimately reduce the installation cost.

EnergyFree Technology is a specialistcompany for design and installation of ground source network. We have provenprocedure to calculate the sizing of theground source network depends on soilformation, installation technology,costing, etc.

Closed loop pipe installation into vertical borehole

Horizontal Ground Closed LoopsThis configuration is usually the most cost effective

when adequate space is available and trenches areeasy to dig.

Slinky coil (loop coils pattern rather than straightloop) provide more compacts installation solution.The picture next page is the slinky coils


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Vertical Ground Close

Open Loop system

If a building is sited close to the body of ssuch as a pond, lake, river or sea, we caplace the pipes network into waterconfiguration, the GSHP benefitsperformance. The pipe material can last a

We have various alternatives to avoid dedigging, please enquires for more details.

Loops

This type of loop configuration is ideal forspace is insufficient to permit horizontal inslarge heating and cooling loads, when the Eclose to the surface, or for retrofit applicminimum disruption of the landscaping is desi Vertical loops are generally more expensiverequire less piping than horizontal loops.

EnergyFree Technology offer a complete drilPE100 pipe-installation / grouting for 75 EurThe depth can range from 50m to 200m.

Open loop systems, in fact, are the simplesthave been used successfully for decades.

It remove water from one well and dispother well or letch field, during this procwithin the water is transferred into the GSH

Because of direct heat transfer, it hastransfer performance.

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Installation quality of the ground pipes networks

We have come across few cases that some client complains that heat pump fails to operateefficiently; one of common failure is incorrect type of pipe materials and poor groundsource network installation design. For example an amateur installer has buried a steel pipeinto ground. The system work perfectly for few weeks and eventually ceased. Duringinvestigation, it turned out that the steel pipe was quickly corroded by an anti-freezechemical within the water. The heat pump was damaged beyond repairs and the warrantydid not cover this type failure.

The moral of this story: Do not even tempt to risk your investment with poor quality groundsource network proposal by inferior company. While cheaper, shorter pipe installation; itwill degrades the power transfer efficiency and will have higher operating cost.

With our professional technical staff, we experts with geological thermal behaviours, thuswe can provide you economical ground source network solution. Youre investment is safewith our specialist engineer and EnergyFree Technology Ltd.

Alternative Ground Source Network Technology

For large building projects, involving foundation work should consult us at the earliestconvenience as we may offer alternative, low cost ground source pipe network technology.

As you may see, were forefront in ground source network technology!

Energy Efficiency Performance Indicator

To assess the energetic efficiency of the heat pump process, the ratio of the available usefulheat produced by the system is compared to the energy that must be fed into the system. Adistinction is made between two different characteristic numbers:

COP = Coefficient Of Performance

EER = Energy Efficiency Ratio.

Coefficient Of Performance (COP)

The Coefficient Of Performance describes the relationship

between the energy produced in the form of heating output(KWh) and the electrical input (kWh) into the system. Thepicture left illustrate the concept

COP(3) = Heating energy (2)+ Electricity Input (1) Electricity Input (1)


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The COP for different heating system providing 45C hot water (ref from Wikipedia)

Heating System type COPGSHP ground at 10C 4.0 - 5.0 High Efficiency ASHP air at 0C 2.5High Efficiency ASHP air at -10C 2.0 * some model, COP less than 1.5Electric heater 1.0 * Most expensive due to high tariff.High efficiency gas burner 0.9Medium efficient gas burner 0.8

The higher the COP means more energy efficient of the heating system.

The COP for the GSHP during the cooling operation tends to be higher because the groundtemperature is much closer to the cooling temperature than ASHP.

Energy Efficiency Ratio (EER)

The Energy Efficiency Ratio, on the other hand, gives a figure to therelationship of the heating performance (kW) and the required power(kW) of the heat pump under specific operating conditions, normally in alab condition. It characterises the efficiency of the heat pump at a specificpoint in time under defined framework conditions, e.g. the flow heat.Thus the performance output is only a momentary value.

The EER numbers are provided by manufacture spec sheet and it is used to compareperformance against competitor manufacture products, rather than actual use whenmounted to the building. Beware of these overstated numbers as the measurement isbased on lab condition which does not always representative to actual environment, such as

Bulgaria outdoor weather which is more extremes than in UK. (Note: take care as there is ameasurement standard difference in EER / SEER between USA and EU)

Seasonal Energy Efficiency Ratio (SEER)The seasonal energy efficiency ratio measures the coolingefficiency of the heat pump over the entire cooling season. It isdetermined by dividing the total cooling provided over thecooling season in Btu by the total energy used by the heat pumpduring that time in watt hours. The SEER is based on a climatewith an average summer temperature of 28C. Again, this is onlyused for comparison between manufacture equipments and the

number does not necessary reflect the actual use wheninstalled.

SEER rating more accurately reflects overall system efficiency on a seasonal basis and EERreflects the systems energy efficiency at peak day operations. Both ratings are importantwhen choosing products.


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Performance between ASHP versa GSHP This section explain the difference between ASHP and GSHP technology, as stated earlierASAP absorb heat from air and likewise GSHP absorb heat form the soils.

ASHP: Split System Air Conditioner Performance Overview

Split System Air Conditioner is a form of ASHP system. Itprovides heating and cooling for existing multi-storeyapartment block and similar small building within the citywhere land is very limited. It also good solution forimprovement work for existing small building and apartmentblocks.

However, most manufacture tends to overstate performancespecification because of the intense competition against othermanufactures.

In realities, the actual performances of the split system air conditioning system are generallyless than manufacture specification. The reason for this is due to wider temperaturevariation of the air in such way, the system works harder to adapt them. Other factorincludes quality of the installation, safety and maintenance service (cleaning filter, etc).

In general, the greater the temperature differences between outside airs and inside buildinglower the COP efficiency. Under an extreme freezing weather condition, the ASHP is likely toshut down where it needed most. In some cases, it necessary to activates defrost mode tode-ice the build up ice surrounded the grills (which significantly reduce efficiency).

Many cheap air conditioners tend to attracts relatively high maintenance cost, in such case,it is difficult to replace a faulty part because manufacture do not offer lifetime support, iethey do not stocks spare parts. The only solution is to replace the unit; which is the reasonwhy cheap air conditioner as a poor investment.

We cherry pick low cost air conditioner from a reputable company for those with tightbudget, out of reach with high quality air conditioner. We avoids less than C energy rating.

ASHP: Air to Water System Performance OverviewUnlike air conditioner which use refrigerant to transferheat between the split units. The air to water ASHPsystem use water medium to transfer heats to variousheating/cooling system within the building such asunderfloor heating, HVAC (air ducts) or fans coils.

The performance is roughly the same as the above butin some cases superior because the ASHP of this typetends to have high quality installations. It is designed fora larger building where central heating and cooling canbe connected into single ASHP unit.


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Poor planning leads to excessive number of air conditioner installation as the pictureshown left. This spoils the appearance of the building and lead to higher maintenancecost, operating cost and increased safetyissue (ie more complex electricalinstallation).

All of these can be integrated into a singleunit as shown below and provide propercentral heating and cooling system such asHVAC and fan coils installation.

Introducing Galletti ASHPThis model is designed to work, in heatingmode, with outdoor air temperature from

-15 to + 30C, producing hot water up to55C, and in cooling mode with outdoor airtemperature from -10C to +45C. It has COPof 3.3 and EER 3.23 (via EU standard)

Smart defrost system Electronic expansion valve Pressure condensing control Noise level very low Auto adaptive set point Hydraulic Plug & Play (integrated

pump kit + tank)

GSHP: Performance Overview

The key factor why the GSHP has superior performanceover the ASHP system relates to the stable soilstemperature. The chart right show how the airtemperature varies compared to earth or groundwatertemperature. Because of narrow temperature variation,the GSHP no longer need to work harder as in ASHP.

This is the reason for relatively high COP performance.

The GSHP can easily handle all season heating andcooling, regardless to weather condition because theground soils has smaller temperature variation.


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There is an additional benefit of ground pipe network installation: it possible to bypass GSHPand use passive cooling operation mode. The COP of this arrangement is very high as it onlyrequires small electricity for water pump operation.

The major benefits of the GSHP that it will substantially reduces your heating and coolingbills, as well as reducing CO2 gas emission.

The system lifetime is estimated at 25 years for the inside components and 50+ years for theground loop. Since 2003, there are approximately 455,435 geothermal heat pumps installedwithin the EU member states. Because of durability, it has relatively low maintenance costduring equipment lifetime, as long all components are manufactured from reputable sourcesuch as EU and USA. EnergyFree Technology do not use cheap, low grade plumbingcomponent as this invalidate warranty and we consider this poor lifetime investment.

Financial Consideration

Simple Payback Period

The simple payback period is by far the simplest andmost basic financial indicator. The simple paybackperiod is calculated as the ratio of the installation costof GSHP or ASHP project over the annual economies (iesaving) it will bring. Shorter the period may representsbetter investment risk, however it has several flaws.

The major issue with this very simple calculation that it depends on assumption that need tobe made about future use and energy price, especially in the next several years, which is

harder to predicts due to soaring fossil fuel and electricity tariff that we experience today.

The GSHP project depending on ground formation network is likely to have payback periodwithin three to eight years.

Investment Profit Returns

The magnitude of profits returns depends onmarket demands for eco-building withincorporated energy efficient centralheating/cooling technology, where the buyer is

willing to pay extra for green technology.

On other hand, investor may prefer to installenergy efficient equipment to attract buyer fromthe competitive project with similar energyefficient installation.


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How the soaring electricity bills lessen the impact with GSHP?

The chart below provides you an illustration how energy bill change for two type of heatinginstallation system, one with electric heater and other with GSHP (with COP=4)

Case (a) plug in electric heater system (common practice in most Bulgaria housing) Last month, you receives electricity bill 200 Suppose that electricity tariff goes up by 20% The next month electricity becomes 240, a 40 price increase

Case (b) GSHP with under floor heating system

Last month, you receives electricity bill 50 (4 time less electricity than above) Suppose that electricity tariff goes up by 20% The next month electricity becomes 60, a 10 price increase

As the case (b) presented here, theabsolute increase of the energy bill isconsiderably smaller than the case (a). Thisrepresent a significant saving in term of relative cost of lifestyle living. Because of this, youll have more financial freedom aswell as lesser impact on your budget as thefossil fuel tariff continues to rise further.Try compares the difference assuming thetariff goes up by 50%....you shall see, it has

a very big impact for your monthly budget.Central Heating System

The ASHP and GSHP provides hot or chilled water source for the central heating or coolingsystem. There are three basic types to consider:

Underfloor Heating

Underfloor heating is a form of central heating whichutilizes radiant heat for indoor climate control, rather than

forced air heating which relies on convection. Heat can beprovided by circulating heated water within a pipe networkunder the floor surface as figure show right.


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Underfloor heating can be used with concreteand wooden floors, with all types of floorcovering (e.g., stone, tile, wood, vinyl, andcarpet), and at ground level or upstairs.Choice of floor finishing requires carefulconsideration, because changes of floor finishmay affect performance.

Underfloor heating is fast becoming the mostpopular form of heating. In most forms it isinexpensive to install, economical to run,there is no maintenance and above all theheat distribution is total.

In fact, underfloor heating requires lowheating temperature which is perfects matchfor the GSHP or ASHP system.

Were a representative for Oventrop, offering you high specificationunderfloor heating components for any type of building as well ashigh quality plumbing component we use for GSHP/ASHP installation.Made in Germany. For more information, see our website.

HVAC (Air Ducts)

HVAC (pronounced "aitch-vak") is anacronym that stands for "Heating,Ventilating and Air Conditioning". It thesystem of air ducts network that providechilled or heated air depending on seasonalheating or cooling requirement. The airducts is made of metal tube or square whichconnects to discrete rooms.

The primary use of HVAC is to regulate roomtemperature, humidity, and air flow, ensuringthat such elements remain within theiracceptable ranges. Effective control of suchfactors minimizes health-related risks. A veryhumid atmosphere impairs the bodys ability toregulate body temperature as it prevents theevaporation of sweat. For more information seeour website:www.energyfreetechnology.com/hvac.html


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Fan Coils Module

A fans-coil unit is a low cost alternativefrom air ducts system and underfloorheating. It is suitable for most

residential and commercial building.

With GSHP system providing lowerheating temperature, the convectorradiator will not work well. The fan-coilsunit is a cost effective solution.

The module shown left is capable of both heating and cooling. It relies on electric fan tocirculate the air into heat exchanger which provides regulated temperature.

We offer several models ranging from 1KW to 11KW available for residential home,

industrial and commercial building.

Prokoncept Building Technology

One of important requirement for GSHP/ASHP is thebuilding technology and the insulation performancebetween that effectively retains heating/cooling energyfrom leaking to the outside environment. The insulationperformance has significant impacts for sizing and costingof the central heating / cooling system.

We offer an energy audit assessment for existing buildingand estimate the energy efficiency of the building as wellas heating and cooling demand which size the installation system. This critical informationis used to calculate the sizing of the ground loop networks.

Case (a) : 100m2 inefficient building, limited insulation, large window area layout.Heating/Cooling demands is therefore very high. This requires roughly 1500m2 of land areato install horizontal pipe loops configuration. In this case, the GSHP installation cost is high,we advise owner that it cheaper to do improvement work with extra insulation layer on thewall and ceiling before we applying for GSHP project design.

Case (b): 100m2 very efficient building based on Prokoncept building material, mediumwindow area layout, with overhang shade for south facing windows. Because of low energybuilding technology, the heating/cooling demand is much lower. This requires much smallerland area to install horizontal loop network. The GSHP installation cost is much cheaperbecause it use less labor, smaller equipments and component.


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Eco-Building Construction Project

We offer construction

project service based onmodern energy efficientconstruction technologysuch as Prokoncept.

We have a specialistarchitect that focus onenergy efficiency of thebuilding while attainingaesthetic appearance.

Richard Payne is member of chamber of engineer forinvestment design andspecialist in GSHP design andcentral heating/coolingsystem.

For more details please visit our website and contact us for professional consultation.

Preliminary Investigation for GSHP/ASHP Project

If you considering a project involving GSHP or ASHPsystem, we offer friendly consultation service todetermine your requirement, so please contact us.

We may ask to prepare following material inadvance:

(a) Architect drawing of the project, includingdetails of the building insulation. This has bigimpact on sizing of the GSHP/ASHPequipment. We respect confidentially of theproject files.

ASHRAE: Engineering For Sustainability

(b) Drawing of the land plot containing contour lines.

(c) Geological details of the land plot.

(d) Information about what investor wish to achieve with the green technology.


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Why EnergyFree Technology? More investors are considering energy efficiency in response to a public demands for greentechnology installation for several reasons:

To protect long terms investment, a green technology installation enhance theproperty value.

To secure prospective buyer who seeking property with green technologyinstallation.

To secure very low heating / cooling consumption bills, without concern of soaringfossil fuel price or electricity tariff. With green technology, the future is safe.

Pride yourself as a pioneer in green technology.

EnergyFree Technology is the first eco-company by the Black Sea offering wide range of green technology services for any type of building projects. Richard Payne is a competencemember of ASHRAE ( www.ashrae.com ) and MIET (www.theiet.org ):

The Institution of Engineering and Technology is one of the worlds leading professional societies for the engineering and technology community. The IET hasmore than 150,000 members in 127 countries. The IET provides a global knowledge network to facilitate the exchange of ideas and promote the positiverole of science, engineering and technology in the world.

The American Society of Heating, Refrigerating and Air Conditioning Engineers is an international technical society for all individuals and organizations involved in heating, ventilation, air-conditioning, and refrigeration ( HVAC&R ). The Society,

organized into Regions, Chapters, and Student Branches, allows exchange of HVAC&R knowledge and experiences for the benefit of the field's practitionersand the public. It also promotes for sustainable, renewable technology.

Registered as energy efficiency installer under the REECL grantsprogram.

Member of European Geothermal Energy Council

Member of Bulgaria Chamber of Engineer. Certified Viessmann Trader. Industrial Association in Varna Certified Installer for NIBE GSHP/ASHPMember of IGSHPA (International Ground Source Heat Pump Association)(C) EnergyFree Technology Ltd, All Right Reserved.No Part of publication may be reproduced, stored, etc without prior written permission by the EnergyFree Technology Ltd.

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