Energy Auditing of Buildings - Welcome to ENSI · 2009-06-09 · 2 Energy Auditing of Buildings ......

Energy Auditing of Buildings

Combined Training and Project Development Programme in the Republic of Moldova

Completion Report

June 2004

Participants and teachers at the Combined Training and Project Development Programme

Energy Auditing of Buildings; Combined Training and Project Development Programme in the Republic of Moldova Completion Report - June 2004

ENSI 2004

Report title Project no. Date Energy Auditing of Buildings: Combined Training and Project Development Programme in the Republic of Moldova

Completion Report

June 04

Client Composed by Sign.

Norwegian Ministry of Foreign Affairs

Per Arne Skjæveland

Number of pages / annexes Approved by Sign.

11 pages and 2 annexes Trond Dahlsveen

Contents 1 Summary ................................................................................................................................... 3 2 Energy Auditing of Buildings...................................................................................................... 4 3 Training and Project Development Programme......................................................................... 7 4 The Moldavian Programme ....................................................................................................... 8 5 Participants ................................................................................................................................ 9 6 Developed Projects.................................................................................................................. 10 7 Additional Programme Results ................................................................................................ 10 8 Lessons Learned ..................................................................................................................... 11 Annexes 1. Content of Training Sessions 1-3

2. Summaries of six Energy Audit Reports

Contacts: CPEE - the Moldavian Cleaner Production and Energy Efficiency Centre

Address: Hijdeu str., 124, of. 20, 2005-MD, Chisinau, Republic of Moldova

Phone / Fax: +3732 21 32 33 +3732 22 71 14

E-mail / url: [email protected] www.cpee.md

ENSI - Energy Saving International AS, a partner in NEEG

Address: Hoffsveien 13 N-0275 Oslo, Norway

Phone / Fax: +47 22 06 40 70 +47 22 06 40 85

E-mail / url: [email protected] www.ensi.no


ENSI 2004

1 Summary Subsidised tariffs provided no incentive for energy efficiency investments in the building sector in the past, but increasing energy tariffs now make such investments important for the economic development of Moldova. The energy costs for both residential and public buildings like schools, hospitals, kindergartens and offices comprise a substantial part of the municipal budgets. To reduce the energy consumption and costs, and to improve the indoor environment, it is necessary to renovate and implement energy efficiency measures in buildings. Projects should be developed and implemented in a structured and efficient way, requiring good Energy Auditing and Project Management methods and tools. At the same time it is important that the Moldavian specialists are skilled in these methods and tools. This capacity does not exist at a sufficient level today. There-fore, capacity building on these issues is essential to achieve a sustainable development.

Norway has for a number of years successfully implemented “Energy Efficiency and Cleaner Production Capacity Building Programmes” in several countries of Central and Eastern Europe and CIS. The long-term programme in Moldova started in 2001, managed by ENSI - Energy Saving International AS and Tekna - The Norwegian Society of Chartered Technical and Scientific Professionals.

The first combined training and project development programme on “Energy Auditing of Buildings" was conducted for Moldavian specialists during the first half of 2004. The Norwegian programme offered hands-on training on identification, development and implementation of energy efficiency projects according the ENergy CONservation Process (The ENCON Process).

The goal was to train engineers and specialists on Energy Auditing of Buildings, enabling them to complete all the steps of the ENCON Process, including:

• Project Identification and Scanning to select the most suitable projects; • Energy Auditing, development and presentation of Energy Audit Report; • Development of procedures for Operation & Maintenance and Energy Monitoring of Buildings; • Planning of efficient project implementation.

The programme consisted of three sessions, each containing lectures, exercises and discussions on several topics. Experiences with ENCON projects from earlier programmes in the former USSR and Bulgaria were presented. To ensure effective learning, the programme was interactive, combining training and development of specific projects as homework. Before, between and after the training sessions, participants were developing Scanning Reports and Energy Audit Reports for selected buildings.

The target group for the training programme was the Centre staff, external consultants, representatives from building owners and educational institutions. As a result of the programme, an agreement was made with the Technical University of Moldova for further co-operation.

The Programme was planned and implemented together with the Cleaner production and Energy Efficiency Centre in Moldova (CPEE Centre).

Programme results:

• 16 project developers trained and certified; • Energy Audit Reports developed for 6 projects (identified profitable measures requires 86 400

USD of investments, giving savings of 44 700 USD/year, giving a payback of 1,9 years); • Moldavian version of the Key Number Software for energy calculations developed, and specific

climatic data for 4 regions prepared; • Further cooperation with the Technical University of Moldova for introducing the ENCON

Process and methodology in the University Curriculum agreed.

The participants very much appreciated the training and they acknowledged that the new know-how will be very useful for them in the future, both for ENCON projects and other types of projects.


ENSI 2004

2 Energy Auditing of Buildings To reduce the energy consumption and costs, and to improve the indoor environment, it is necessary to renovate and implement energy efficiency measures in buildings. Projects should be developed and implemented in a structured and efficient way, requiring good Energy Auditing and Project Management methods and tools, as well as good skills of local specialists. What is Energy Auditing Based on an inspection of the building (and some measurements), Energy Auditing includes an evaluation and analysis of the existing situation and the various measures that could be implemented to reduce the energy consumption and improve the indoor environment. The results are presented in an Energy Auditing Report describing the recommended measures with corresponding investments, savings and profit. Energy Auditing should be done by a specially trained and experienced energy auditor (normally an engineer).

Existing building

+

Inspection and

evaluation/analysis by

energy auditor

Energy AuditReport

Building xx=

Energy Audit Report:• Measures

• Investments

• Savings

• Profit Multidisciplinary Energy Audit When performing an Energy Audit, all the factors influencing the energy consumption and the indoor environment must be evaluated:

• Building envelope (walls, windows, roofs and floors) • Heating system • Mechanical ventilation system • Domestic hot water system • Automatic control systems • Lighting • Various installations like kitchen, laundry, etc.

In addition, it is also necessary to take into consideration how the building and its installations actually are being operated and used (often not as designed).


ENSI 2004

The ENergy CONservation (ENCON) Potential One important output from the Energy Auditing is the building specific ENCON Potential presented in the following way, ranking the recommended measures according to their profitability (NPVQ):

ENCON Potential - Energy Audit

Building: ENSI® Head Office, Oslo Project no: 10150 Heated area: 2.300 m²

Measures Investment Net savings Payback NPVQ* [USD] [kWh/yr] [USD/yr] [year]

1. Energy efficient showers 400 2.300 200 2,0 2,51 2. Operation & maintenance manuals /

Energy management system 15.000 81.000 7.100 2,1 2,32 3. Sealing of windows 10.000 80.000 8.000 1,3 2,28 4. Insulation of attic floor 12.500 17.800 1.800 6,9 0,79 5. Insulation of pipes, valves etc. 9.500 17.700 1.800 5,3 0,73 6. Balancing of heating system and

thermostatic valves

22.500

53.800

5.400

4,2

0,69 7. Heat recovery, ventilation system 25.000 37.000 3.200 7,8 0,17 8. Automatic control system 20.000 38.000 3.300 6,1 0,16

Total measures 114.900 327.600 30.800 3,7 *) Real interest rate 7 % The complete Energy Audit Report should normally include the following main chapters:

• Summary • Introduction • Organisation of the ENCON Project (involved parties) • Description of the existing situation • Present Energy Consumption • Identified ENCON Potential • Description of the recommended ENCON Measures • Environment benefits/improvements • Financing Plan • Implementation Plan • Description of proposed Operation & Maintenance and

Energy Monitoring routines

Step by Step – the ENCON Process Every building is unique. Therefore each project must be treated separately to find individual energy conservation possibilities. The building owner might also have various plans for renovation and different requirements for the profit of the ENCON measures (maximum Payback). Furthermore it is necessary to approximate possibilities and economic consequences of the project before spending time on detailed investigations. A project should be developed Step by Step. The results from each of the steps should be evaluated, and decisions made whether or not it is beneficial to continue the process.


ENSI 2004

The total ENCON Process can be divided into six main steps as illustrated in the flow chart. 1. Project Identification 2. Scanning 3. Energy Auditing 4. Business Plan 5. Implementation 6. Operation If information gathered during the Project Identification phase reveals a beneficial ENCON project, a Scanning is carried out. The Scanning will assess whether profitable ENCON measures could be implemented, including total energy saving potential, investments required and the corresponding payback time. If the Building owner finds the saving possibilities beneficial, the process will continue with an Energy Audit, which is a more in-depth investigation of the proposed measures, including proposal for implementation and financing plan. If external financing for the project investments is required, the process will continue with the development of a Business Plan. During the Implementation period, it is important to execute all the activities in accordance with the budget, time schedule, quality requirements, laws and regulations. This requires good Project Management and quality assurance. In addition, the personnel in charge of operation and maintenance should be given thorough training on all systems and equipment. This training ensures an energy efficient Operation of the building. Good routines for operation and maintenance and energy monitoring will contribute to ensure that the energy consumption remains permanently at a low level.


ENSI 2004

3 Training and Project Development Programme A standard ENSI Programme on Energy Auditing of Buildings was implemented in Moldova:

Goal The goal was to train engineers/specialists on Energy Auditing and Presentation Techniques, making them able to: • accomplish Project Identification and Scanning to select the most suitable projects; • carry out Energy Auditing, and develop an Energy Audit Report to be used as the basis for the

selection and implementation of energy efficiency measures; • present the Energy Audit Report in a proper and convincing way; • prepare manuals and routines for efficient Operation & Maintenance, and for Energy Monitoring

of their specific building; • set up a proper organisation and prepare plans for efficient project implementation. Interactive Training Our interactive working method used in the Programmes has proven to be a very efficient way of learning. Between the training sessions, each participant carries out practical homework on a specific building. In this way they gain their own experience while repeating and testing out their new knowledge, ending up with an Energy Audit Report for their own building. As our Programmes are aiming at resulting in Energy Audit Reports for specific projects, we have named the Programme: Combined Training and Project Development Programmes.

Homework 1

Training Session 1

Homework 2

Training Session 2

Homework 3

Training Session 3

Interactive Training on Energy Auditing

Result: Complete Energy Audit Report

Homework 4

Training materials The participants are provided a comprehensive package of material: • Detailed guidelines on the whole ENCON Process, focusing on Energy Auditing of Buildings • Inspection checklists • Templates for reports, tables, forms, etc. • Software for energy and for profitability calculations • Exercises and examples A demo-version of the Software can be downloaded from our Homepage; www.ensi.no: ENSI® Software (in English and Russian).


ENSI 2004

4 The Moldavian Programme The Programme in Moldova was implemented with sessions in February, March and April 2004. An overview of the presented subjects is listed in Annex 1.

Project development:6 projects developed by 6 project teams

Session 1

Session 2

Session 3

Combined Training and Project Development

Homework

Homework

Measures implemented (soft loan available for one selected project)

Homework

Building inspections

Building inspections24-26 February

23-26 March

27-28 April

Opening by Iurii Leu, Man. Dir.

of the CPEE Centre Lubomir Tchervilov presenting the ENCON Process.

In addition to the lectures, exercises and discussions, individual consultations with each participating team were organised.

Individual consultations providing direct feedback from the trainers was very popular.


ENSI 2004

5 Participants The target group for the Training Programme was the Centre staff, external consultants, representatives from building owners and educational institutions. Certificates were awarded to 16 participants, representing 6 different organisations each having a building to be developed. Two of the 16 were representatives from the CPEE Centre. The participants were as follows:

№ Participant Project no. Organization

1 Vladimir Haiut 1 APLP № 50/99 (Residential building) 2 Anatolii Cebotari 3 Alexei Railean

2 APLP № 52/149 (Residential building)

4 Alla Poltavcenco 3 APLP № 51/173 (Residential building) 5 Octavian Lupasco 6 Dmitrii Cebrucean 7 Stelian Buga 8 Andrian Lungu

4 Technical University of Moldova, Energy Department

9 Oleg Chilari 10 Alexandr Gutul 11 Serghei Tuleanu 12 Denis Palancica 13 Iurii Lazar

5 Technical University of Moldova, Department for Urbanism and Architecture

14 Alexei Vartic 6 Republican lyceum – boarding house sport school 15 Irina Chiriac * CPEE Centre 16 Petr Comarov * CPEE Centre

* Irina Chiriac and Petr Comarov from the CPEE Centre supported several project groups

Vladimir Haiut (left) receiving his Certificate from Trond Dahlsveen, President of ENSI, assisted by Irina Chiriac from the CPEE Centre.


ENSI 2004

6 Developed Projects During the Programme six Energy Audit Reports were developed by the participants. Key figures from the projects are summarized below:

Project no.

Type of building

Year of

constr.

Heatedarea

Energysavings

%

No. of measures

Tot. inv.USD

Savings per year kWh USD

Payback years

1 Block of flats 1952 2 789 22 5 12 500 122 440 2 305 5,4

2 Block of flats 1977 2 787 17 4 18 620 32 340 6 750 2,8

*2 Block of flats 1977 2 787 18 5 20 220 38 470 6 810 3,0

3 Block of flats 1967 9 580 9 5 15 200 243 330 5 520 2,8

4 Block of flats 1990 1 896 11 2 11 280 50 060 20 420 0,6

5 University bld. 1980 8 426 20 2 19 700 313 450 6 270 3,1

*5 University bld. 1980 8 426 25 3 50 700 391 810 7 840 6,5

6 Dormitory 1963 1 998 3 4 9 080 9 800 3 430 2,7

Total 27 500 14 22 86 400 771 500 44 700 1,9 *Total incl. renov. *15 *24 *119 000 *856 000 *46 300 *2,6

* Inclusive renovation measures

The total identified ENCON potential is 771 500 kWh/year, representing an average of 12 % savings. With a total investment of 86 400 USD, the annual savings of 44 700 USD gives an average payback time of 1,9 years. For the different projects, the payback is varying from 0,6 to 5,4 years.

If the identified renovation measures in project no. 2 and 5 are included, the total savings increase to 856 000 kWh/year, with a corresponding increase in the payback time from 1,9 years to 2,6 years.

Summaries of the Energy Audit Reports are presented in Annex 2. 7 Additional Programme Results Additional spin-off is also important when evaluating the overall success of the Programme.

First of all, there is an interest to include the Norwegian methods and tools in the educational programme of the Technical University of Moldova. This was discussed with a group of professors lead by the Dean of the University's Architecture and Urbanism Department. It was agreed to arrange a workshop at the University in September 2004 for further training and discussions.

The knowledge, skills and experience gained for the CPEE Centre will enable them to offer services on Energy Auditing of Buildings to new clients in the future, supporting their development into a self financed Centre. Their new knowledge will also be useful for their activities related to developing and implementing other types of projects, also in the industry.

Participants got the opportunity to refresh their knowledge on planning, evaluation, implementation and contracting of projects, presentation techniques, as well as profitability calculations, and introduction to business planning using computerised models. These topics presented a valuable add on for the technical work that the participants normally do.


ENSI 2004

8 Lessons Learned The main lessons learned can be summarised as follows:

• The interactive model of combining training with development of real projects as homework once more proved to be very motivating and efficient.

• As experienced in several other countries, most of the participants showed a high level of technical skills and expertise. However, their understanding of the nature of practical project management and of economic and financial evaluations is lower. This shows that this type of training is needed.

• There is a big potential for improving the energy efficiency of Moldavian buildings. Investing in profitable energy saving measures will both reduce the energy consumption and give a substantial improvement of the indoor environment.

• The market for energy efficiency in the building sector is not very well developed in Moldova. Relatively low energy prices and lack of financing possibilities in the residential and municipal building sector are the main barriers.

• The mechanism of using reduced energy costs to repay loans for energy efficiency investments can not be applied for municipal and residential buildings without changing the laws and regulations.

• The participants very much appreciated the training and they acknowledged that the new know-how will be very useful for them in the future, both for ENCON projects and other types of projects. This also proves the need for future programmes planned at the University.

• It is very important to have a local partner arranging such a programme. The preparations and support from the CPEE Centre during the whole training period was vital for securing the quality and good results for the developed ENCON projects. The Centre will also play an important role in the follow-up and implementation of selected projects by working both with the participants and the building owners.

• A careful selection of participants for future Training Programmes is very important. The organizations must give their representatives necessary "free" time for full participation in the programme, including completing the homework. The participants must also be in a position where they are able to influence decisions on project Implementation.

Your Local Expert and Contact


ENSI 2004

Annex 1

Content of Training Sessions 1 - 3

Session 1

• ENCON Measures, evaluation by Key Numbers

• Introduction to the Norwegian Programme in the Republic of Moldova and to the programme on “Energy Auditing of Buildings”

• Introduction to Operation and Maintenance

• Presentation of participants and projects • Introduction to Energy Monitoring • Project Identification • Examples and experiences from ENCON

Projects in CIS countries • Scanning • The ENCON Process • ENCON Measures, examples

• Introduction to the Key Number Software • Introduction of the Key Number Method for energy calculations • Building visits/inspections

• Key Number exercise

Session 2 • Homework presentation • How to create ET-curve ?

• Project Implementation • Plenary comments to presented homework • Energy Monitoring Manual

• Operation and Maintenance Manual • ENCON Measures and Key Number Parameters • Energy Auditing

• Profitability calculations • Presentation Techniques • Profitability calculations, exercise • Individual consultations • Adjustment of energy consumption • Building visits/inspections

Session 3 • Homework presentation • Business Planning - Introduction

• Opportunities for developing Energy Auditing Business in Moldova

• Energy Auditing in Bulgaria; examples and lessons learned

• Individual consultations


ENSI 2004

Annex 2

Summaries of six Energy Audit Reports


ENSI 2004

Project no 1: Block of flats, Stefan cel Mare 128-A str


Building: Block of flats, Stefan cel Mare 128-A str.

Project no: 1

Heated area: 2 789 m²

Energy conservation measures Investment Net savings Payback NPVQ*

[USD] [kWh/yr] [USD/yr] [year] 1. Partial replacement of windows with

new energy efficient ones with plastic frames

1 224 35 970 731 1,7 3,81

2. Operation and maintenance routines for the heating system

550 26 500 261 2,1 2,23

3. Installation of heat meter and replacement of old pipes with new high pressure polyethylene pipes

6 002

38 210

814

7,3

0,12

4. Repair and sealing of entrance doors

359 1 120 59 6,1 -0,07

5. Heat insulation of attic floor 4 365 20 640 440 9,9 -0,21

Total all measures 12 500 122 440 2 305 5,4


ENSI 2004

Project no 2: Block of flats, Florilor 26/3


Building: Block of flats, Florilor 26/3

Project no: 2


Energy conservation measures Investment Net saving Payback NPVQ*

[USD] [kWh/yr] [USD/yr] [year] 1. Operation and maintenance manual 420 26 200 249 1,7 3,04

2. Autonomous heating system 17 400 -11 420 6 333 2,7 1,48

3. Insulation of pipes and valves 525 8 920 85 6,1 0,1

4. Sealing of windows 275 8 640 82 3,3 0,07

Total ENCON measures 18 620 32 340 6 749 2,8

5. Heat insulation of roof 1 600 6 130 58 27,5 - 0,71



ENSI 2004

Project no 3: Block of flats, Trandafiilor 29/1


Building: Block of flats,Trandafiilor 29/1

Project no: 3



[USD] [kWh/yr] [USD/yr] [year] 1. Manual control of the temperature set

back 216 65140 1387 0,2 34,1

2. Automatic lighting control 216 8 620 518 0,4 2,00

3. Partial replacement of standpipes and valves and their heat insulation

5 072 87 180 1857 2,8 1,46

4. Sealing of windows 1 650 29 700 633 2,7 1,12

5. Heat insulation of roof 8 043 52 690 1 122 7,3 -0,06



ENSI 2004

Project no 4: Block of flats, Artelelor Str. 33/23


Building: Block of flats, Artelelor Str. 33/23

Project no: 4



[USD] [kWh/yr] [USD/yr] [year] 1. Installation of autonomous

heating system 11 000 25 404 20 186 0,5 19,7




ENSI 2004

Project no 5: Technical University of Moldova


Building: Technical University of Moldova

Project no: 5



[USD] [kWh/yr] [USD/yr] [year] 1. Sealing of windows 5 800 174 420 3 490 1,7 1,17

2. Balancing of the heating system, installation of thermostatic valves 13 900 139 030 2 780 5,0 0,13

Total ENCON measures 19 700 313 450 6 270 3,1

3. Sealing and insulation of roof 31 000 78 361 1 570 19,8 -0,6



ENSI 2004

Project no 6: Hostel. Republican lyceum – boarding house sport school


Building: Hostel. Republican lyceum – boarding house sport school

Project no: 6



[USD] [kWh/yr] [USD/yr] [year] 1. Autonomous gas heating and hot

water supply 8 209 -6 590 3 169 2,4 1,63

2. Partial replacement of lamps with energy efficient ones

96 2 000 120 0,8 1,11


4. Operation and maintenance manuals 140 2 000 19 7,4 -0,08


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