Current Trend in Ground Source Heat Pumps in Japan

Masakatsu SASADAGeo-Heat Promotion Association of Japan

5-29-20 Ogikubo, Suginami-ku, Tokyo 167-0051, Japan

e-mail: geohpajs@geohpaj.org

Ground Source Heat Pumps

Closed loop Open loop

Heat Pump Heat Pump

Aquifer

Bo

reh

ole

Hea

tEx

chan

ger

Open-loop102 in 2009149 in 2011

Closed-loop474 in 2009836 in 2011

(Ministry of the Environment, 2010)

Facilities using Ground Source Heat Pump Systems

住宅, 434

公共施設, 72学校, 40

幼稚園・保育施設, 15

病院・医療施設, 19

福祉施設, 12

事務所, 114

店舗, 40宿泊施設, 35

温浴施設, 16

工場, 28

道路（融雪）, 59

駐車場（融雪）, 2

農業施設, 33実験施設, 44

地域冷暖房施設, 1

その他, 26

地中熱ヒートポンプシステムの設置状況 【1981-2011年】

総数：990件

（Ministry of the Environment, 2012）

House 434

Public Building 72School40

Kindergarten & Nursery 15

Hospital 19

Welfare Facility 12

Office 114

Shop 40Hotel 35

Spa Facility 16

Total 990

Factory 28

Parking Lot (Snow Melting) 2

Road (Snow Melting) 59

Agriculture 33

Exper. 44

District Heating & Cooling 1

Others 26

Ground source Heat Pump Systemsfor Houses

(Asahi Kasei Homes)

Ground Source Heat Pumps for Public Building

Kasukabe City Hall, Saitama Pref.

Commercial Facility of JP Tower in front of Tokyo Railway Station

Ground Source Heat Pump Systemfor School

Kuromatsunai Elementary School in Hokkaido

Swimming pool at the school, Morimura Gakuen

Heat pump

Swimming Pool

(Misawa Kankyo )

Geothermal Snow Melting Systems

Yamagata Pref. (Japan Groundwater Dev. Co.)

Aomori Pref. (Misawa Kankyo)

Snow melting system under construction(JGD)

(Misawa Kankyo)

District Heating and Cooling for “Tokyo Sky Tree Town”

Ground source heat pump system and the Diet Members

Ground heat exchangerunder construction(Taisei Corporation)

( Tobu Railway Co. )

Number of Facilities using Ground Source Heat Pump

（Ministry of the Environment, 2012）

Hokkaido 322

Aomori 50

Iwate 72Akita 49

Tokyo 87 Legend

Annual Installation for HybridAnnual Installation for Open LoopAnnual Installation for Closed LoopTotal Installation for Closed LoopTotal Installation for Open LoopTotal Installation for HybridTotal Installation for All

Number of Facilities using Ground Source Heat Pump

An

nu

al I

nst

alla

tio

n

Cu

mu

lati

ve N

um

ber

of

Inst

alla

tio

n

1981-2011 yr

（Ministry of the Environment, 2012）

System Capacity of Ground Source Heat Pump

Annual capacity for HybridAnnual capacity for Open LoopAnnual capacity for Closed LoopCumulative capacity for Closed LoopCumulative capacity for Open LoopCumulative capacity for HybridCumulative capacity for All

Cu

mu

lati

ve c

apac

ity

An

nu

al c

apac

ity

1981-2011 yr

Total Length of Ground Heat Exchangers

Annual total length of GHE

Cumulative total length of GHE

An

nu

al t

ota

l le

ngt

h o

f G

HE

Cu

mu

lati

ve t

ota

l le

ngt

h o

f G

HE

Number of Ground Heat Exchangers

Single U-tube

Double U-tube

Coaxial

Pile

Depth (m)

Nu

mb

er

Power-saving by Ground Source Heat Pump

(JFE Steel Welded Pipe Manufacturing Co.)

Space Cooling(July 15, 2009)

Space Heating(March 2, 2010)

Elec

tric

ity

a d

ay

Air

So

urc

e H

eat

Pu

mp

Air

So

urc

e H

eat

Pu

mp

Gro

un

d S

ou

rce

H. P

.

Gro

un

d S

ou

rce

H. P

.

Energy Conservation and CO2 Reduction

在来システム

地中熱

46％削減

0

100

200

300

400

500

GJ/年 エネルギー消費量

在来システム

地中熱

0

10

20

30

t/年 CO2発生量

50％削減

※在来システム　冷房：空冷チラー、暖房：灯油ボイラー、融雪：電熱線

( Mitsubishi Materials Techno )

Ground source heat pump systemfor space heating and cooling,and snow melting at HirosakiTown Center

Energy consumption CO2 emission

ReductionReduction

Co

nve

nti

on

al S

yste

m

Co

nve

nti

on

al S

yste

m

Ge

oth

erm

al

Ge

oth

erm

al

GJ/yr t/yr

Conventional System :Air-source chiller, Oil boiler and electric heater

0

500

1000

1500

2000

2500

3000

11月 12月 1月 2月 3月 4月 5月 6月 7月 8月 9月 10月

地中熱

H20-H21

空気熱

H17-H19

Electricity, kWh

Energy Conservation for Office Building in Tokyo

Ground SourceHeat Pump2008-2009

Air SourceHeat Pump2005-2007

Parking Lot where 8 ground heatexchangers of 75 m in length aresettled

Ground source and air source hybrid heat pump

Electricity consumption of ground- and air-source heat pumps(Sasada, 2010)

Current Trend for GSHP

190 20 40 60 80 100 120

Office

Public Building

Road (Snow Melting)

Experiment

School

Shop

Hotel

Agriculture

Factory

Hospital

Spa and Swimming Pool

Kindergarten and Nursery

Welfare Facility

Parking Lot (Snow Melting)

District Heating and Cooling

Others

Subsidary Application from 2011 to 2013

Installation Number up to 2011

Japan Sport Council

New National Stadium for 2020 Olympic and Paralympic