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Located At:15700 International Plaza Dr.

Suite. 100Houston, Texas 77032

Contact Us:TEL 281-546-3550FAX 281-553-3222

[email protected]@ghtransfer.com

HEAT RECUPERATION SYSTEMS

Heat RecuperatorsEconomizersAir Coolers

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© Copyright 2012 Global Heat Transfer

Heat Recuperation Systems

TABLE OF CONTENTSSECTION 1 Divisions

SECTION 2 Technical Capabilities

SECTION 3 Certificates

SECTION 4 Heat Recuperation

SECTION 5 Heat Recuperators

SECTION 6 Economizers

SECTION 7 Air Coolers

SECTION 8 Contact Us

SECTION 1 Divisions


Since Global Heat Transfer’s foundation, we have worked in satisfying the needs of the steel chemical & petrochemical industries. These years of experience rendered a specialized group of people in process equipment manufacturing.

Today we are proud to introduce the new manufacturing division in the Global Heat Transfer family:

Heat Recuperation: with this division, we will be servicing the industry with:

• Heat Recuperators • Economizers • Air Coolers’

Product Catalog 1998

Heat Exchangers & Pressure Vessels 2006

Heat Recuperation 2008

DIVISION ESTABLISHED


SECTION 2 Technical Capabilities

Engineering

The experience and capability of our personnel allow us to offer tailor made solutions. We fabricate based on our own or costumer provided designs.

SOFTWARE:

HTR1 - XistHTR1 - XaceAspen - Shell & Tube MechanicalPV - CodeCalcPV - EliteAutodesk - AutoCAD

Manufacturing

We manufacture using the right tools and equipment for every job.

Quality Control

Every step of the manufacturing process is supervised byour highly experienced Quality Control Team.


SECTION 3 Certificates

Global Heat Transfer provides all products that are ASME, National Board, TEMA, HEI, ANSI, ASTM and API certified according to the codes and standards.


SECTION 4 Heat Recuperation

Once most of fueled-heated equipments (either furnaces or boilers) reach their practical temperature limit, they waste a great amount of heat energy through their stacks.

The Heat Recuperation Process is the recovery of wasted heat in a process that works above ambient temperature, allowing us to apply it in other process or improve the efficiency of the original one; Melter can help you to achieve this.

Heat recovery equipment in industrial fur naces and boilers is a practical alterna tive for fuel savings & cost reductions.

Heat to Load 10% - 53%

TYPICAL HEAT LOSS

Flue Gas 40% - 70%

TYPICAL HEAT USE

Wall 2% - 6%

Radiation 3% - 6%

Conveyor 2% - 7%

Stored Heat 0% - 02%

Total Input

Flue Gas Loss

Wall LossRadiation Loss

Heat to Load

Conveyor Loss

(Heat waste depends on design of each equipment.)



Heat Recuperators

A recuperator is a special heat exchanger used to recover waste heat from exhaust gases. In many types of processes, combustion is used to generate heat, and the recuperator serves to reclaim this heat back, in order to reuse or recycle it.

Convection Channel H.R.

The Convection Channel H.R. is installed in the furnace flue channel, and consists of a bundle of steel pipes through which the air that will be preheated will pass by.

Convection Flue H.R.

The Convection Flue H.R. receives the combustion gas through the tube bundle. On the other hand, the air to preheat runs inside the shell and flows around the bundle recuperating the thermal energy. It is a very similar process to that of a Shell & Tube Heat Exchanger.



Furnace Exhaust Temp. Preheated Air Temperature °C / °F

°C °F 316/600 427/800 538/1000 649/1200 760/1400 871/1600

538 1000 13 18

649 1200 14 19 23

760 1400 15 20 24 28

871 1600 17 22 26 30 34

982 1800 18 24 28 33 37 40

1093 2000 20 26 31 35 39 43

1204 2200 23 29 34 39 43 47

1316 2400 26 32 38 43 47 51

Radiation Double Shell

A recuperator is a special heat exchanger used to recover waste heat from exhaust gases. In many types of processes, combustion is used to generate heat, and the recuperator serves to reclaim this heat back, in order to reuse or recycle it.

Radiation Cage H.R.

The Convection Channel H.R. is installed in the furnace flue channel, and consists of a bundle of steel pipes through which the air that will be preheated will pass by.

Radiation Cage H.R. is widely used in:

• Forging Furnaces• Glass Industry• Ceramic Industry

Percentage of Fuel Savings Gained by Using Preheated Combustion Air


SECTION 6 Economizers

The H.R. used in boilers to recover heat from flue gases and use it to increase boiler feedwater temperatures prior enter ing the boiler itself are called Economizers. They can be either cylindrical, rectangular or of any other configuration as required by the customer.

Economizers are a perfect fit for the following conditions:

• Stack temperature above 175cF (BOcC)• Boilers with nominal capacity above 50 BHP• Hot gas flow through stack

Economizers can be installed in:

• Horizontal or vertical gas flows• Before or after air heaters• Stacks• Piping• Boilers

Special Fabrication:

Melter economizers are designed and fabricated under specific characteristics and parameters in order to satisfy the particular application for which they were required. Equipments are manufactured and tested according to the ASME codes. They can be stamped if required by the customer.

Economizer wide range of industrial applications:

• Energy and Power• Chemical• Petrochemical • Steel• Food• Pulp and Paper• Incineration

Cylindrical Economizer Rectangular Economizer Custom-Made Economizer



An Air Cooler is a Heat Exchanger that uses air at ambient temperature as cooling media. It cools a fluid by making it circulate inside a tUbe bundle while the outer side of the bundle is in contact with the cooling media.

Air Coolers are quite convenient in regions with scarcity of cooling water and where water treatment costs are elevated.

1. Tube Bundle 2. Header 3. Nozzle4. Supporting Column 5. Plenum 6. Fan 7. Fan Ring 8. Mechanical Drive

Induced Draft

Forced Draft



Fin Tube

Beside the headers, tube fins are another feature for the proper performance of the Air Cooler. different operating conditions, the Under most common types of tube fins are:

Headers

Depending of its application or cus tomer specs, the headers can be:

• Cover Plate Type• Plug Box Type• Pipe Header• Pipe Header Type

“L” Extruded Embedded

Temp °C / °F 300 / 150 540 / 280 750 / 400

Mechanical Endurance Regular Very Good Good

Corrosion Endurance Good Very Good Good

Cleaning Endurance Regular Low-High High

Application Pressure Cleaning

Cover Plate Common Until 300 psi Very Easy

Plug Box High Until 3950 psi Easy

Header Common Low-High Not Easy

Cover Plate Plug Box Pipe Header

“L” Footed Fin Embedded Fin Extruded Fin


SECTION 8 Contact Us

Located At:15700 International Plaza Dr. Suite. 100Houston, Texas 77032

Contact Us:TEL 281-546-3550FAX [email protected]@ghtransfer.com

Visit our website at:www.ghtransfer.com

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