The route of building energy efficiency development in ...€¦ · “Eleventh five-years “plan:...

The route of building energy efficiency

development in CHINA

- The role of Chinese Green Building

Evaluation Label

Tongji University

Prof. Zhang Xu

Characteristics of building energy consumption in china

Large existing building area, large annual increase

•46 billion square meters of existing building area

•Annual increase of building area more than 2 billion square meters ,

account for 50% of the world

Five different climate zones

Building energy consumption account for 25.7% of social

terminal total energy consumption,

lower than the European and

American developed countries,

building energy consumption

rise significantly.

• Strict implementation of energy efficiency standards for new buildings1

• Energy-saving renovation of existing residential buildings in North

china

2

• Energy efficiency monitoring platform for state organ office buildings

and large public buildings

3

• Application of renewable energy4

5

6

●Green Building Evaluation Label

●Prospect of building energy saving development in china

The route of building energy efficiency development in CHINA

30％ 50％ 65％

National towns National towns North china

More stringent building energy saving

design standards

75％

Some provinces and

cities in north china

1、Strict implementation of energy

efficiency standards for new buildings

Increasing execution rate of energy-saving standards

1、Strict implementation of energy

efficiency standards for new buildings

Design stage

Construction stage

●The building area of northern towns account for 10% of

national towns

●But for building energy consumption, account for 40% ●Heating demand in northern towns

●Energy saving rate can reach 30% if heat-metering and

charging adopted

Existing buildings energy consumption situation in north china

2、Energy-saving renovation of existing

residential buildings in North china

Valuable transformation ：2.5 billion m2

Energy consumption more than 20kgce/m21

Period for recovery of investment less than 10 years2

Working life more than 20 years3

8billion m2 in northern towns

The contents：Building envelop, heat metering, heat source heat pipe network



“Eleventh five-years “plan: 18200 million m2 have been

completed

It can save 2 million tons of standard coal,5.2million tons of

carbon dioxide emission,0.4 million tons of sulfur dioxide

emission.

Objective of 12th five year plan :40000 million m2



Building energy consumption Characteristics of large scale public buildings

1、Large total energy consumption and grow faster

Less than 4% of building area of cities and towns, but for power

consumption ,account for 22%

3 Energy efficiency monitoring platform

for large scale public buildings

7.557

200

4520

050100150200250

Electricity consumption

（kWh）

Annual electricity consumption per unit area of state organ office buildings and large public buildings is 10-20 times the residential,1.5-2 times European ,japan and other developed countries for the same type buildings

2、High energy consumption per unit area, low level of energy utilization



The central state organ office buildings

Through improved regulation and operation、replacement of key energy consuming

equipment, it will save 0.15 billion degrees of electricity consumption per year, equivalent

to saving 52,500 tons of standard coal, saving 90 million administrative costs.

Research results of Tsinghua university

Large office building energy saving potential is 10～45kWh/m2.a，conservative

estimate of the energy saving potential is 15kWh/m2.a

Theoretical calculation

By strengthening the operational management and other measures, the "Eleventh

Five-Year " period, for the state organ office buildings and large public buildings, 12.5

million tons of standard coal will be saved

3、large energy-saving potential



Objectives and thinking of large scale public building energy management system

Energy statistics

Energy

audit

Energy

Efficiency

publicity

Efficiency quota Increase over the

fixed

Promote energy-

saving operation for

buildings

Promote energy-saving

renovation for energy-

intensive building

Develop energy

services market

The results achieved for large scale public building energy management system

Provinces and cities launching dynamic

energy consumption monitoring platform

First

• Beijing Tianjin Shenzhen

Second

• Nei menggu ChongqinJiangsu

Third

• Shanghai Zhejiang Guizhou

Statistics on energy consumption

for 30000 public buildings have

been completed

Energy audit for 4800 public

buildings

Dynamic motoring for 1500 public

buildings

Cleared the energy consumption law

it is a basis for further reform

4 Application of renewable energy

Demonstration projects

• Demonstration projects :371

• Solar thermal, photovoltaic and ground source heat pump project

Photoelectric demonstration

projects

• Demonstration projects :111

• Focus on integrative developing of Solar photoelectric architecture

Demonstration of urban and rural

areas

• 21citties,38towns

2006-2009 2006-2010 2009-2010

Integrate urban and rural areas, promote the changes form

individual projects to district

0%

10%

20%

30%

40%

50%

60%

太阳能光热太阳能光电地源热泵技术太阳能+地源热泵

复合

73; 20%

18; 5%

194; 54%

74; 21%

Technology items and proportion

Technology Distribution

太阳能+热泵综合20%

地下水源热泵22%

淡水源热泵4%

太阳能供热、热水10%

太阳能光电5%

太阳能综合11%

土壤源热泵16%

热泵综合5%

污水源热泵4%

海水源热泵3%

才


Solar thermal Solar power GSHP Solar energy and

GSHP

Solar energy and

GSHP

Solar power

Heat pump

GWHP

GSHP

Seawater-

source

heat pump

Sewage-source

heat pump

Light water

source heat

pump

Solar heating

hot water

Solar

comprehensive

Technical type

Substitution of conventional

energy sources throughout the

year

（kgce/m2）

Carbon dioxide emission

reductions

（tons/a.m2）

Annual cost savings

（yuan/m2）

Solar thermal 26.45 65.34 3.68

GSHP 75.73 168.38 9.02

Note: Statistics based on 39 projects which has been detected

Achievement of energy saving


5 The role of Chinese Green Building Evaluation Label

Characteristics of green building labelbasis for evaluation

Assessment activity to recognize green building rating and identify the information

Basis：

1."Green Building Assessment identity management (tentative) "

2."One and two-star Green Building Assessment identity management

(tentative) "

3."Green Building Rating Standards "

4."Green building evaluation technical details (tentative) "

5."Green building evaluation technical details supplement "(design

section)

6. Green building evaluation technical details supplement "(running

part)

Characteristics of green building label-Logo

Green Building Design Evaluation label

Through construction plan review, 1 year

effective

Green building evaluation label

Completed and put into use more than 1 year, 3 years

effective

Certificate of Green Building Design Evaluation label

Certificate of green

building

Characteristics of green building label-logo

Comparison with other label system

Government and society voluntary logo behavior

Sub-index evaluation framework

Sub-index evaluation√

comprehensive evaluation

Consistent with the actual construction

Building regulatory system

Standards and specifications

Commercial building energy consumption in China is far less than

developed countries

chinachina

America California Britain Germany America Canada Britain

Office building Hotel

electricity consumption

Evaluation and identification process

Application

Register

Submit the application materials

Review

Whether through the

review or not

No

yes

Contact with the unit and apply the review results

Pay the evaluation cost

Professional evaluation and expert review

Publicity

No objection

Can not resolve

the dispute

Labeling program announced, Issues the certification and apply the label report

Processed according to the circumstances

3.2.1 Evaluation index system consists of saving land and outdoor environment, energy saving and energy utilization, water conservation and water source utilization, materials saving and material resource utilization, indoor environmental quality and operational management. Each type of index, include control items and general items of excellent options.

Control items

Prerequisites for green building

mandatory provisions related to relevant standards

If not meet items then give a veto

General items and excellent options

Optional conditions of green building rating

Excellent option is the items which is more difficult to realize

Review index

3.2.2 Green building should meet the control requirements of standards of Chapter 4 residential buildings or Chapter public buildings, according to the satisfied items, divided into three grades. Table 3.2.2 -1, Table 3.2.2-2.

Rank

General items (40)

Optimal

items

(9)

Land

recourses

saving and

outdoor

environme

nt(8)

Energy

saving

and

energy

utilizati

on (6)

Water

saving and

water

utilization,

(6)

Materials

saving and

utilization,

(7)

Indoor

Environ

mental

Quality

(6)

Operati

ons

Manage

ment

(7)

★ 4 2 3 3 2 4 -★★ 5 3 4 4 3 5 3

★★★ 6 4 5 5 4 6 5

Rank

General items （43）

Optimal

items

(14)

Land

recourses

saving

and

outdoor

environme

nt(6)

Energy

saving

and

energy

utilization, (10)

Water

saving and

water

utilization,

(6)

Materials

saving and

utilization,

(8)

indoor

Environmen

tal Quality

(6)

Operatio

ns

Manage

ment

(7)

★ 3 4 3 5 3 4 -★★ 4 6 4 6 4 5 6

★★★ 5 8 5 7 5 6 10

3.2.2-1 The numbers of items required for green building rating

3.2.2-2 the numbers of items required for green building rating(public building）

6 Prospect of building energy saving

development in china

Achieve the transformation of

green low-carbon eco-city

Improve Energy efficiency

Building energy saving technology materials

and products

Building energy

savingGreen building Green low-carbon cityObjectives

Strategy

“four saving “

&

“one environmental

protection”

Life cycle

Achieve three important changes

energy saving Value

construction

11th five year

12th five year

Single

building

Region

Green

Low-carbon

Prospect of building energy saving

development in china

The route of building energy efficiency development in ...€¦ · “Eleventh five-years “plan:...

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