aes - giz magnum cafe energy audit 20150304

Indonesia / SE Asiatel: +62 811 911 0427

email: [email protected]: andreosae

Magnum Café Energy Audit

Preliminary ReportVersion 01

Submitted by:AES Clean Energy Consulting

Contact Information:Andre Susanto

Jakarta, Indonesia+62 (0) 811 911 0427

[email protected] m

July 3, 2015

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https://id.linkedin.com/in/andresusanto


mailto:[email protected]

TABLE OF CONTENTS

1. Company Overview..........................................................................................................................3

2. Project Overview.............................................................................................................................3

3. Proposed Scope of work..................................................................................................................4

3.1 Energy Efficiency Audit – Level 1.................................................................................................4

3.2 Energy Efficiency Audit – Level 2.................................................................................................4

4. Schedule..........................................................................................................................................5

5. Consulting Fee.................................................................................................................................6

6. Exclusions........................................................................................................................................7

7. Indemnification................................................................................................................................8

LIST OF TABLESTable 1 – Deliverables..................................................................................................................................5Table 2 – Schedule for Level 1 Audit............................................................................................................6Table 3 – Schedule for Level 2 Audit............................................................................................................6Table 4 – Consulting fee for energy audit....................................................................................................7Table 5 – Expected Payment Schedule........................................................................................................7

LIST OF FIGURES

No table of figures entries found.

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https://www.linkedin.com/in/andresusanto




1. Company Overview

Andre Susanto has over twenty years of various engineering design, testing, and management experience spanning work in the United States, Philippines, Thailand and Indonesia. In the last five years he has been focusing his considerable experience and knowledge in the clean energy sector. His work includes engineering design and implementation of various types of solar PV based projects, lead a team who assessed over 200 rural off grid village electrification microgrid systems, developed and taught clean energy training curriculums and workshops. Past clients include investors, finance institutions, private clients, industrial and commercial facilities, and international agencies such as APEC, GIZ, DANIDA, HIVOS and ADB.

While his background is in engineering, he has recently also done work in clean energy policy support and analysis, clean energy project financial modeling and business model development, and also authored a comprehensive solar PV design engineer and installer training curriculum. Having a well-rounded knowledge of the clean energy industry, Andre is able to provide many consulting services in the sector.

His services include design, procurement and project management for renewable energy and energy efficiency projects including rural electrification projects. Preliminary feasibility studies, full feasibility studies, roadmap and strategy documents, as well as business development services are also well within his scope of capabilities.

Andre ensures that his clients receive their deliverables on time and in alignment with their original goals and purpose by making sure to work closely with the clients and establish a clear communication protocol through cloud based tools such as Trello and Dropbox. At the end of the day, only one thing is important, and that is client satisfaction.

2. Project Overview

Magnum Café require assistance in their major renovation of their flag-ship café in Grand Indonesia in order to make it energy/water efficient while remaining a pleasant environment for the clients. GIZ has the option to fund the energy efficiency audit and be part of Magnum Café’s significant energy savings efforts. The data from this audit and Magnum Café commitment to be the premium energy efficient food and beverage retail space in Indonesia is a great value to GIZ Indonesia’s Renewable Energy Support Program.

Magnum Café is very open to cooperate with GIZ and ESDM on this project. Some of the future cooperation between GIZ/ESDM and Magnum Café could be:

a) Continue data collection for baseline study plus continued operations monitoring. Magnum Café may share the energy usage data for further study by GIZ/ESDM

b) Equipment replacement plus design for the new renovation according to GIZ and ESDM recommendations

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c) Marketing and public announcement of the energy efficiency project highlighting GIZ/ESDM’s involvement

Mr. Susanto has already completed an initial site visit, documented in the attached report. During this initial visit there are several obvious energy efficiency issues. A very basic comparison between the existing equipment and new energy efficient equipment was done with the following results:

a) Energy used for cold storage can be reduced between 20-40% b) Energy used for air conditioning can be reduced between 30-60%

Magnum Café is very committed to energy efficiency not only because they care for the environment but also to reduce their energy costs. Currently they are paying an average of Rp 80,000,000 per month for electricity. Their Energy Utilization Index is about > 630 kWh/m2·year as compared to 350-500 kWh/m2·year for a commercial building (Indonesia’s EBTKE Guide to Energy Efficiency).

3. Proposed Scope of work

3.1 Energy Efficiency Audit – Level 1

The ASHRAE* Level-1 audit is focused on identifying the potentials for energy efficiency, understanding the overall building set up, and defining the type and nature of energy usages. The audit should create a preliminary energy-use benchmark based on the actual historical energy use. A brief report will describe the results, which include identifying a number of recognizable efficiency opportunities. This audit report will only uncover major problems and corrective measures are briefly described. Quick estimates of implementation costs, potential operating cost savings, and simple payback periods are provided.

The ASHRAE Level-1 audit is designed to help the end user establish a baseline for measuring improvements; determine whether further evaluation is needed; and when so, where and how that effort can be focused. This can help minimize the price of the much more intensive higher-level work involved in the Level-2 and -3 audits. When the information for its industry is available, the Level-1 audit also helps identify how the facility performs when benchmarked against its peers.

Activities that may be undertaken for the Level-1 Audit include:

a) Walk through of the facilityb) Instantaneous data collection and some very short term data logging may be done if necessary

(this is above and beyond ASHRAE’s definition, but in some instances it helps to gather better information for a higher quality report)

c) List of possible EEMs (Energy Efficiency Measures) with estimated investment, savings and payback period in 3 categories: No/Low cost, Mid-range potential capital improvement investment, High-range potential capital improvement investment

* ASHRAE is a global society advancing human well-being through sustainable technology for the built environment. ASHRAE energy audit processes have become the industry standard practice. We follow ASHRAE standards and guidelines in our energy audits.

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Matt Basinger, 03/04/15,

Very nice narrative here Andre!




d) Assess the need for a more detailed audit (Level-2 or beyond) in order to reach a final decision on implementing proposed capital improvement investments

3.2 Energy Efficiency Audit – Level 2

The ASHRAE Level-2 audit is focused on more detailed energy calculations and financial analysis of proposed energy efficiency measures. Specifically the energy efficiency measures that were identified in the Level-1 audit as the most beneficial mid-range and/or high-range potential capital improvement investments. The financial analysis or Life Cycle Cost Analysis provides the facility owner with comprehensive understanding of the financial benefits of implementing these investments.

More data is collected over a longer period of time (1-4 weeks, sometimes more) with the appropriate data logging equipment. Data collection and analysis during this audit period is to be detailed enough and for a long enough duration so that the assumptions used to estimate the energy use in the Level-1 Audit can be verified.

Actual supplier quotation will be sought to be used as the actual client’s cost for the investment. This will allow for an accurate calculation for the payback period and other financial analysis for the project.

Many of the energy efficiency measures (EEMs) revealed throughout the ASHRAE Level-2 audit can be implemented quickly with clear financial payback for the client.

There may be other energy efficiency measures (EEMs) that will need more detailed analysis of benefits, cost and other goals which are important to the Owner; the audit should determine next steps to accomplish this analysis and decision making. For other EEMs that require complex interaction among building systems or potentially large financial investments, it may be necessary to dig deeper into the building operation as well as the human factors influencing overall performance. This is where the ASHRAE Level-3 audit is needed.

Activities that may be undertaken for the Level-2 Audit include:

a) Instrumentation and longer term data logging of the facility (typically 1-4 weeks)b) Up to date supplier quotation is sought to calculate investment valuesc) Financial analysis and life cycle cost analysis performed as neededd) As is technically possible, a breakdown of the energy use will be recorded

LEVEL-1 AUDIT

LEVEL-2 AUDIT

Walk through site report Yes Yes Instrumentation report No Yes Final report Yes Yes

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Table 1 – Deliverables

4. Schedule

A Level-1 Audit’s walk through survey and data collection can be performed in 1-5 business days by our team members, depending on the size and complexity of the facility. The next step would be the data analysis and finalizing the report which would take an additional 5-10 business days after the walk through survey. The total project length for a Level-1 Audit should be between 3-6 weeks to account for client feedback and input from the facility managers/users.

Depending on the results of the Level-1 Audit, it will determine the number of Energy Efficiency Measures (EEMs) that will need a full detailed analysis in the Level-2 audit. Normally there are between 1-5 EEMs that are identified in the Level-1 Audit to have full detailed analysis done on.

A Level-2 Audit starts with the same walk through survey and data collection as a Level-1 Audit to ensure that the information is still valid. Additional time will be taken to install the data logging instruments on the relevant equipment, and this will typically require 2-4 business days. Generally the data will be logged for at least 1 week, and at the longest 4 weeks. Data analysis and report writing will take between 7-20 business days after the data is collected. The total project length for a Level-2 Audit should be between 5-12 weeks to account for client feedback and input from the facility managers/users and selected suppliers. This time is also highly dependent on the number of EEMs to be analyzed.

Week 1 Week 2 Week 3 Week 4Down Payment xWalk Through Survey xWalk Through Site Report xFinal Report x

Table 2 – Typical schedule for Level 1 Audit

Week 1 Week 2 Week 3 Week 4 Week 5 Week 6Down Payment xWalk Through Survey xWalk Through Site Report xInstrumentation xInstrumentation Report xFinal Report x x

Table 3 – Typical schedule for Level 2 Audit

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Thank you,

Andre Susanto | Clean Energy Consultant+62 811 911 [email protected]

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INITIAL SITE ASSESSMENT REPORTMagnum Café was visited on February 8, 2015 and met with the management team to conduct an initial site visit, in order to understand the current issues and make preliminary suggestions. These issues and suggestions are described below.

Please note that these issues and suggestions are NOT comprehensive, but are only meant to serve as a very quick, preliminary idea of the state of operations, the need for a more comprehensive audit, and the possible savings that could be realized.

This initial site assessment in no way replaces a Level-1 Audit, but only serves to orient the client and the consultant to whether or not further energy audit efforts may be useful. It was found that indeed such efforts will be useful – as was detailed in the above proposal.

CURRENT ISSUES:

Because the location and the facilities are quite old and were not originally meant to serve as a flagship café, the owners are preparing a major renovation. The pre-planning phase have started currently to identify a rough budget and the direction of the design. Actual planning of the renovation is expected to start sometime in June. As part of the renovation, an energy efficiency audit should be performed to identify points of vulnerabilities and to make the space as energy efficient as possible after the renovation.

After a quick walk through of the location, the following items have been identified as obvious and major contributors to energy waste:

1. The door to the outdoor balcony consists of an ill-fitting sliding door made of single pane glass panels

2. There is a large un-insulated skylight in the middle of the air conditioned restaurant 3. A majority of the windows are facing Northeast and the windows are all single pane glass4. Air conditioning of the restaurant consists of several split units and ceiling cassettes5. Refrigeration and freezing of products are done with individual refrigerated showcase units6. Ventilation fans in the storage and kitchen area are open to the outdoor7. Kitchen and storage area is un-insulated and does not have adequate ventilation for cooling

PRELIMINARY SUGGESTIONS:

1. Create walk-in freezers and walk-in refrigerators with phase change material thermal storage system

2. Redesign the kitchen and storage areas with wall and roof insulation along with heat removal ventilation from the kitchen area to reduce heat loads

3. Redesign the whole restaurant cooling system to use an appropriate chiller size, if possible with ice making capabilities and/or phase change material as a thermal energy storage method

4. Replace side door and windows with double pane windows and insulated door or a thermally efficient door with an air curtain device

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Andre – you must explain WHEN the renovation will take place – and tie this into our proposed schedule… so that its clear how much time we have for our work to actually have an impact… or if we are “out of time.”




5. Replace interior door with thermally efficient door and air curtain device6. Insulate the skylight or if acceptable to the client, close off the skylight and use solar light tubes

instead7. Incorporate the outdoor canopy for the balcony with solar PV panels (non BIPV to save costs)

and create a fake ceiling that is waterproof 8. Create a shade canopy on the windows to prevent too much heat from entering

EXPECTED SAVINGS

Below are some preliminary expected savings that can be calculated prior to any audits and measurements performed at the facilities.

Walk-in freezer vs glass display freezers

Currently there are 25 glass display freezers that are being used on site as food storage for the restaurant. A standard sized glass display freezer with an interior volume of 1000L uses about 5.92kWh per day for a similar size (Orford FMB20-S Single Door Display Fridge). 25 of these freezers being used at the restaurant means they will consume approximately 148kWh per day. This is under test conditions, which usually does not reflect how often the doors are opened throughout the day in a commercial setting such as a restaurant. For this reason 148kWh is likely a conservative (low) number.

A comparable sized walk in freezer (www.uscooler.com) will use about 116kWh per day. With a difference of 30kWh per day, this is a savings of at least 22% over the original figure of 148kWh per day.

This 22% savings is in line with a study done called “ENERGY STAR® Guide for Commercial Kitchen” that says the energy savings difference between a baseline commercial freezer and a standard high efficiency unit is about 18%. A larger difference should be realized between a stand up single door glass display freezers and a walk in freezer in a commercial restaurant setting.

In a commercial setting where the door to the freezer is opened often, the thermal air mass in the walk in freezer is much larger when compared with a single door unit. The design of the walk in freezer also allows for the door to be opened often without letting a lot of the cold air out (or warm air in). Also, the current reach-in freezers are quite old and much less efficient than a new one.

Based on the usage pattern of the freezer (opened often during the day) and the fact that the existing reach-in freezers are old, a larger savings than 20% can be realized. Loss of insulation value of the insulator materials and the old seals as well as old compressors all add up to additional losses. It is expected that a savings of 40% can likely be realized.

During the audit, the existing freezer units will be instrumented to measure the actual energy use per day. And this value will be used as a baseline to compare with the cost of purchasing and installing a new walk in freezer.

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http://www.uscooler.com/

Reach in Freezer Walk in Freezer Savings % Savings

Annual Savings New walk in freezer

Payback period

148 kWh/day 115 kWh/day 33 kWh/day 22.3% $ 1,303 $7,500 5.8 years189 kWh/day 115 kWh/day 74 kWh/day 39.2% $ 2,921 $7,500 2.6 years

Table 1 – Expected Savings for Freezer/Chiller

Air Conditioning Units

With old air conditioning units and even many new ones, the compressor is lubricated with oils that are mixed in with the refrigerant. Over time, the oils can build up on the inside wall of the tubing, specifically through the condenser tubing. When this happens, the oil build-up prevents efficient heat transfer between the refrigerant and the copper pipes.

One solution that has been used in Indonesia quite frequently and has been shown by independent energy efficiency auditors to actually save 15-25% in energy consumption is the use of a synthetic refrigerant catalyst. The catalyst works with the existing refrigerant to remove the oil fouling on the copper tubing walls and to provide more lubricity to the oil to make the compressor run more efficiently.

However, the air conditioning unit that is currently being used at the facility is quite outdated. The COP of these AC units is between 2.8 and 3.1. New high efficiency AC units have a COP of over 4.0. As an example, a Fujitsu ASHG12LUCA have a COP of 4.3.

Another option beside split AC units would be to use chillers. Simple water cooled chillers can reach a COP of over 5.0. An example would be an LG MCWW008AA11 with a COP of 5.1.

AC Unit COP* SavingsCurrent 2.8 – 3.1 N/AFujitsu Split AC 4.3 39% - 53% LG Water Cooled Chiller 5.1 64% - 82%

Table 2 – Expected Savings for Air Conditioning

*COP = Coefficient of Performance, it is a ratio of the thermal performance to the electrical energy consumed. Higher COP equates to lower operating costs.

NEXT STEPS:

Further instrumented data collection is needed via a full energy audit project. This will then provide the needed information for design and equipment replacement, in order to realize optimal savings

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Include captions on all tables & figures!


You need to explain what the COP is and why this matters – the “non-engineer” won’t know, so you need to explain this important metric. Just 1-2 sentances.


Andre, you must stop inserting tables as images! Please insert tables as edit-able tables! Replace this graphic with an editable table. Include captions on all tables & figures!




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