Exportinitiative Energieeffizienz
ENERGY MANAGEMENT AND MONITORING
FOR BUILDING IN VIETNAM
Reported by: Phạm Huy Phong
Deputy Director of the Energy Conservation Center HCMC
www.efficiency-from-germany.info
January, 2013
Contents
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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)
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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 3
energy; implementation on energy audit (process and procedures)
(Source: ECC-HCMC)
Biểu đồ tỉ lệ % các thiết bị tiêu thụ điện
75.9%
11.5%
Air conditioning
Máy lạnh
3.0%
9.5%
Biểu đồ tỉ lệ tiêu thụ năng lượng
Lighting
Đèn chiếu sáng
Office equipment
(computers,
printers,
copiers,
Thiết
bị văn phòng (máy
tính, in, photo,
quạt,…)
fans,…)
58%
Thang máy & máy bơm nước
24%
Elevators and water pumps
Offices
18%
Hệ
thốngsystem
chiếu sáng
Lighting
Air-conditioning
Hệ
thống ĐHKKsystem
Other
equipment
using
energy
Các
thiết
bị tiêu thụ
điện
khác
Commercial centers
Biểu đồ tỷ lệ sử dụng năng lượng trong ngày
Elevator
Hệ thống
thang
system
máy
Hot
water
Hệ
thống
máy
4.95%
system
nước nóng
4.41%
Hệ thống chiếu
Lighting system
sáng
9.11%
HệOther
thốngsystem
khác
6.70%
Air-conditioning
Hệ thống
ĐHKK
system
74.83%
Hotels
POTENTIAL ENERGY SAVINGS – OFFICES
No.
% ENERGY
SAVINGS
SOLUTION
1
Promote awareness
energy management
of
user,
establish
2
Use air conditioning with high performance
3
Improve lighting system
3 - 5%
4
Reduce heat penetration (adjust fresh air
flow, close door, improve envelop of
building)
2-4%
5
Maintain air-conditioning equipment, lights
2-3%
5 - 10 %
10 - 15 %
(Source: ECC-HCMC)
POTENTIAL ENERGY SAVINGS – HOTELS, COMMERCIAL CENTERS
No.
SOLUTION
% ENERGY
SAVINGS
1
Improve lighting system
2-3%
2
Improve air conditioning system
3
Operate and maintain air conditioning,
lighting system, … reasonably
3-5%
4
Apply 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%
5 - 10 %
(Source: ECC-HCMC)
What is energy management system?

A system includes:



Scope:


Resources – financial resources, human resource and technology
Procedures/Regulations, programs in order to manage, implement activities.
Areas related to energy consumption in company
Purpose:

Provide methods, programs clearly to implement energy savings in order to
achieve planned objectives.
Increase the
effectiveness
of other
management
system
Maintain
effective
energy
savings
Attract the
participation of
personnel
Have objectives
to pursue
7
Continual
improveme
nt
Cost
Year
No energy management
Không có
hệ thống QLNL
system
With energy management
Có hệ thống QLNL
system
8
PROCESS FOR ESTABLISHING ENERGY MANAGEMENT SYSTEM
Current
assessmen
t
•
•
•
•
•
•
Energy policy
Organizational structure
Motivation
Measurement/Monitoring
Communication –Training
Investment of energy
Design
•
•
•
•
Establish energy team
Train to enhance
awareness
Define energy policy
Design documentation of
energy management
system
Deploy
•
•
•
•
•
•
•
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
STANDARD ON ENERGY MANAGEMENT SYSTEM
ISO 50001: 2011 STANDARD
International standard on energy management system, issued in 6/2011
Old energy
management
system
Present energy
management
system
Future energy
management
system
Countries/Scope
Standard
Denmark
DS2403:2001
Sweden
SS627750:2003
Ireland
IS 393:2005
Spain
UNE 216301:2007
UE-27
EN 16001
Effect from 07/2009
China
GB / T 23331-2009
Effect from 11/2009
United State
ANSI/SME 2000
Effect from 2008
From 2010
World
ISO 50001
(from EN 16001)
Issued in 06/2011
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
10
EFFECT OF ENERGY CONSERVATION OF BEMS
Primary energy consumption
(X103GJ)
Primary energy consumption of 201 building whole
8.4%
Reducing by
11.2%
Source：NEDO
Actual Result
BEMS are installed in 80% of large buildings.
Introduction of V-BEMS in Vietnam
Cooling Tower
A
A
A
T
T
T
T
T
T
T
A
A
A
secondary chilled water pump
T
T
Chiller
condenser Water pumps
T
Chiller
T
A
AHU
FCU
Chiller
T
A
A
A
A
T
A
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.
primary chilled water pump
T
Data
Analysis
Cooling load Vs. Outdoor air temp
Chiller COP Vs. Cooling load
Chiller COP Vs. Condenser Ent water temp
Chiller COP Vs. Evap Lvg temp.
Water transportation Factor
Cooling Load Vs. WTF
Condenser water temp
Secondary chilled water Temp
System power consumption
Cooling load Vs. occupancy rate
Source：Hibiya
Introduction of V-BEMS in Vietnam
Typical: Legend Hotel
In Ho Chi Minh City: 280 rooms
Content
Cost
Equipment
20,000
Install
Total
5,000
USD
25,000
Expected savings
13,000USD/ye
ar
Payback < 2 years
Source：Hibiya
TELEVISION CENTER BUILDING
Objectives
In 2011, 100% lamps are replaced
to high efficiency lamps
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
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Area of 20,000m2
1 basement, 1 ground floor,
14 floors
Inaugurated in 2006
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
SOFTWARE FOR MANAGING AND MONITORING ENERGY
•
•
•
•
Manage electrical system
Measure electricity
Attach additional measuring equipment
MacPiu of Ducati, measure electricity in
the old building.
WINCC
(Siemen)
INSIGHT
(Siemen)
Energy
•
Manage air conditioning systems, electrical
system of daily activities, Gaz system, CO2
pollution levels, pumping system, pressure fan.
Monitor electricity at loading branch
SIPASS
(Siemen)
•
•
•
•
•
Statistic materials
& components.
Manage equipment
Set maintainence
schedule.
Record history of
equipment
•
QLBT&SC
(HTV)
Manage lighting system
(monitor & remote control).
Manage entrance
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)
Electricity (kWh)
THE
RESULT
Chart of electrical consumption of building in
2008 - 2009
Month
Thank you for your attention