Exportinitiative Energieeffizienz

www.efficiency-from-germany.info

Reported by: Phạm Huy PhongDeputy Director of the Energy Conservation Center HCMC

ENERGY MANAGEMENT AND MONITORING

FOR BUILDING IN VIETNAM

ENERGY MANAGEMENT AND MONITORING

FOR BUILDING IN VIETNAM

January, 2013

Contents

The relevant legal documents of building sector Current energy use and potential energy savings of types of

buildings Introduction to energy management system Typical case – efficient energy management system model

(Legend Hotel and Television building)

3

Decree No.102/2003/ND-CP dated September 03, 2003 of the Government on thrifty and efficient use of energy, specifies activities of thrifty and efficient use of energy in industry, in large buildings, in transportation, in daily activities and for equipment using energy.

Circular No.40/2005/BXD issued energy regulations in construction.

Law No.50/2010/QH12 on economical and efficient use of energy passed by the National Assembly 12 on 28/6/2010, with effect from 1/1/2011: building, authority, institution using State budget and consuming more than 500 tons of oil equivalent in one year is significant energy facility. (Article 32);

Decree No. 21/2011/ND-CP of March 29, 2011, detailing the law on economical and efficient use of energy and measures for its implementation.

Decree No. 73/2011/ND-CP of August 24, 2011, defining handling of administrative violations on economical and efficient use of energy.

Circular No. 39/2011/TT-BCT of October 28, 2011, providing for training, grant of certificates of energy management and energy auditors.

Circular No. 09/2012/TT-BCT of April 20, 2012, specifies the planning, reporting on the implementation plan on economical and efficient use of energy; implementation on energy audit (process and procedures)

75.9%

11.5%

9.5%3.0%Máy lạnh

Đèn chiếu sáng

Thiết bị văn phòng (máy tính, in, photo, quạt,…)

Thang máy & máy bơm nước

Offices

Commercial centers

Hotels

18%

58%

24%

Hệ thống chiếu sáng Hệ thống ĐHKK Các thiết bị tiêu thụ điện khác

(Source: ECC-HCMC)

Air conditioning

Lighting

Office equipment (computers, printers, copiers, fans,…)

Elevators and water pumps

Lighting system

Air-conditioning system

Other equipment using energy

Elevator system

Hot water system

Lighting system

Air-conditioning system

Other system

No. SOLUTION % ENERGY SAVINGS

1Promote awareness of user, establish energy management

5 - 10 %

2 Use air conditioning with high performance 10 - 15 %

3 Improve lighting system 3 - 5%

4Reduce heat penetration (adjust fresh air flow, close door, improve envelop of building)

2 - 4 %

5 Maintain air-conditioning equipment, lights 2 - 3 %

POTENTIAL ENERGY SAVINGS – OFFICES

(Source: ECC-HCMC)

No. SOLUTION% ENERGY SAVINGS

1 Improve lighting system 2 - 3 %

2 Improve air conditioning system 5 - 10 %

3Operate and maintain air conditioning, lighting system, … reasonably

3 - 5 %

4Apply new technology: cold storage tank system, solar hot water system / heat pump.

3 - 5 %

5 Improve envelope of building 1 - 2 %

6 Establish energy management system 1 - 2 %

POTENTIAL ENERGY SAVINGS – HOTELS, COMMERCIAL CENTERS

(Source: ECC-HCMC)

What is energy management system? A system includes:

Resources – financial resources, human resource and technology Procedures/Regulations, programs in order to manage, implement activities.

Scope: Areas related to energy consumption in company

Purpose: Provide methods, programs clearly to implement energy savings in order to

achieve planned objectives.

7

Attract the participation of

personnel

Attract the participation of

personnel

Have objectives to

pursue

Have objectives to

pursue

Maintain effective energy savings

Increase the effectiveness

of other management

system

Không có hệ thống QLNL

8Có hệ thống QLNL

Continual improvement

Cost

No energy management system

With energy management system

Year

9

• Identify areas, equipment of significant energy use and parameters need to test.

• Monitor and record data of energy consumption.

• Conduct energy audit (energy performance, energy savings solution)

• Establish objectives and plan

• Implement plan• Motivate and communicate

energy savings• Evaluate efficiency of

energy management system

• Energy policy• Organizational structure• Motivation• Measurement/Monitoring• Communication –Training• Investment of energy

• Establish energy team• Train to enhance

awareness• Define energy policy• Design documentation of

energy management system

PROCESS FOR ESTABLISHING ENERGY MANAGEMENT SYSTEM

Current assessment

Design Deploy

ISO 50001: 2011 STANDARDInternational standard on energy management system, issued in 6/2011

10

STANDARD ON ENERGY MANAGEMENT SYSTEM

STRUCTURE:

1. Scope

2. Normative references

3. Terms and definitions

4. Energy management system requirements

4.1. General requirements

4.2. Management responsibility

4.3. Energy policy

4.4. Energy planning

4.5. Implementation and operation

4.6. Checking

4.7. Management review

Annex provide guidance for using standard

Countries/Scope Standard

Old energy management system

Denmark DS2403:2001

Sweden SS627750:2003

Ireland IS 393:2005

Spain UNE 216301:2007

Present energy management system

UE-27EN 16001

Effect from 07/2009

China GB / T 23331-2009

Effect from 11/2009

United StateANSI/SME 2000

Effect from 2008From 2010

Future energy management system

World ISO 50001 (from EN 16001)

Issued in 06/2011

Primary energy consumption of 201 building whole

Prim

ary

ener

gy c

onsu

mpti

on(X

103 G

J)

Reducing by 11.2%

Source ：NEDO

8.4%

BEMS are installed in 80% of large buildings.

Actual Result

EFFECT OF ENERGY CONSERVATION OF BEMS

Introduction of V-BEMS in VietnamIntroduction of V-BEMS in Vietnam

AHUFCU

A A

A A A

AA AA A A

A

T

T

TTT

TTT

T

T

T

T

T

T

Cooling Tower

Chiller ChillerChiller

condenser Water pumps

primary chilled water pump

secondary chilled water pump

Data Analysis

Cooling load Vs. Outdoor air tempChiller COP Vs. Cooling load Chiller COP Vs. Condenser Ent water tempChiller COP Vs. Evap Lvg temp.Water transportation FactorCooling Load Vs. WTFCondenser water tempSecondary chilled water TempSystem power consumptionCooling load Vs. occupancy rate

Source ：Hibiya

Methods of energy savings:Optimization of the chiller number control.Optimization of chilled water temperature.Chilled water pump variable control.Condenser water pump variable control.Management of performance of chiller COP.

Introduction of V-BEMS in VietnamIntroduction of V-BEMS in Vietnam

Typical: Legend HotelIn Ho Chi Minh City: 280 rooms

Content Cost

Equipment 20,000

Install 5,000

Total 25,000 USD

Expected savings

13,000USD/year Payback < 2 years

Source ：Hibiya

TELEVISION CENTER BUILDING

Area of 20,000m2 1 basement, 1 ground floor, 14

floors Inaugurated in 2006

In 2011, 100% lamps are replaced to high efficiency lamps

Save more than 10% of electricity consumption of cabinet air conditioner –

217 units

Reduce 10% of capacity utilization of water chiller system

Save 3-5% from the existing transformers

Research on using solar power to supply electricity for small loads in early 2013

Deploy the project to upgrade and expand BEMS for entire building

Objectives

• Manage air conditioning systems, electrical system of daily activities, Gaz system, CO2 pollution levels, pumping system, pressure fan.

• Monitor electricity at loading branch• Manage electrical system• Measure electricity• Attach additional measuring equipment

MacPiu of Ducati, measure electricity in the old building.

• Manage lighting system (monitor & remote control).

• Manage entrance• Statistic materials & components.

• Manage equipment• Set maintainence

schedule.• Record history of

equipment

SOFTWARE FOR MANAGING AND MONITORING ENERGY

RESULTS

Reduce 16% of electricity consumption in 2009 against to in 2008.

The average electrical performance from 7.16 kWh/m2 (2008) to 14.34 kWh/m2 (2009)

Reduce 16% of electricity consumption in 2009 against to in 2008.

The average electrical performance from 7.16 kWh/m2 (2008) to 14.34 kWh/m2 (2009)

Chart of electrical consumption of building in 2008 - 2009

Month

Ele

ctri

city

(kW

h)

THE RESULT

Thank you for your attention