Current Trend in Ground Source Heat Pumps in Japan

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1 Current Trend in Ground Source Heat Pumps in Japan Masakatsu SASADA Geo-Heat Promotion Association of Japan Ogikubo, Suginami-ku, Tokyo , Japan

2 Ground Source Heat Pumps Closed loop Open loop Heat Pump Heat Pump Borehole Heat Exchanger Aquifer Closed-loop 474 in in 2011 Open-loop 102 in in 2011 (Ministry of the Environment, 2010)

3 Facilities using Ground Source Heat Pump Systems Agriculture 33 Parking Lot (Snow Melting) 2 Road (Snow Melting) 59 Factory 28 District Heating & Cooling 1 Exper. 44 Others 26 Spa Facility 16 Hotel 35 Shop 40 House 434 Office 114 School 40 Public Building 72 Welfare Facility 12 Hospital 19 Kindergarten & Nursery 15 Total 990 (Ministry of the Environment, 2012)

4 Ground source Heat Pump Systems for Houses (Asahi Kasei Homes)

5 Ground Source Heat Pumps for Public Building Kasukabe City Hall, Saitama Pref.

6 Commercial Facility of JP Tower in front of Tokyo Railway Station

7 Ground Source Heat Pump System for School Kuromatsunai Elementary School in Hokkaido

8 Swimming Pool Heat pump Swimming pool at the school, Morimura Gakuen (Misawa Kankyo )

9 Geothermal Snow Melting Systems Yamagata Pref. (Japan Groundwater Dev. Co.) Snow melting system under construction (JGD) Aomori Pref. (Misawa Kankyo) (Misawa Kankyo)

10 District Heating and Cooling for Tokyo Sky Tree Town Ground source heat pump system and the Diet Members ( Tobu Railway Co. ) Ground heat exchanger under construction (Taisei Corporation)

11 Number of Facilities using Ground Source Heat Pump Akita 49 Hokkaido 322 Aomori 50 Iwate 72 Tokyo 87 Legend (Ministry of the Environment, 2012)

12 Number of Facilities using Ground Source Heat Pump Annual Installation Annual Installation for Hybrid Annual Installation for Open Loop Annual Installation for Closed Loop Total Installation for Closed Loop Total Installation for Open Loop Total Installation for Hybrid Total Installation for All yr Cumulative Number of Installation (Ministry of the Environment, 2012)

13 System Capacity of Ground Source Heat Pump Annual capacity Annual capacity for Hybrid Annual capacity for Open Loop Annual capacity for Closed Loop Cumulative capacity for Closed Loop Cumulative capacity for Open Loop Cumulative capacity for Hybrid Cumulative capacity for All yr Cumulative capacity

14 Total Length of Ground Heat Exchangers Annual total length of GHE Cumulative total length of GHE Annual total length of GHE Cumulative total length of GHE

15 Number of Ground Heat Exchangers Single U-tube Double U-tube Coaxial Number Pile Depth (m)

16 Power-saving by Ground Source Heat Pump Space 暖房比較 Heating (2010 (March 年 2, 3 月 2010) 2 日 ) 14 Space 冷房比較 Cooling (2009 (July 年 15, 7 月 2009) 15 日 ) 12 19% 空気熱 地中熱 空気熱 地中熱 39% Electricity 日消費電力 a day(kwh) Air Source Heat Pump Ground Source H. P. Air Source Heat Pump Ground Source H. P. (JFE Steel Welded Pipe Manufacturing Co.)

17 Energy Conservation and CO 2 Reduction GJ/yr GJ/ 年 500 Energy エネルギー消費量 consumption t/yr 年 CO2 CO2 emission 発生量 30 Ground source heat pump system for space heating and cooling, and snow melting at Hirosaki Town Center Conventional System 在来システム 46% 削減 Reduction Geothermal 地中熱 Conventional System 在来システム 50% 削減 Reduction Geothermal 地中熱 0 在来システム Conventional System : 冷房 : 空冷チラー 暖房 : 灯油ボイラー 融雪 : 電熱線 Air-source chiller, Oil boiler and electric heater ( Mitsubishi Materials Techno )

18 Energy Conservation for Office Building in Tokyo 3000 Electricity, kwh 2500 Parking Lot where 8 ground heat exchangers of 75 m in length are settled Ground 地中熱 Source H20-H21 Heat Pump Air Source Heat Pump 空気熱 H17-H19 Ground source and air source hybrid heat pump 0 11 月 12 月 1 月 2 月 3 月 4 月 5 月 6 月 7 月 8 月 9 月 10 月 Electricity consumption of ground- and air-source heat pumps (Sasada, 2010)

19 Current Trend for GSHP Others District Heating and Cooling Parking Lot (Snow Melting) Welfare Facility Kindergarten and Nursery Spa and Swimming Pool Hospital Factory Agriculture Subsidary Application from 2011 to 2013 Installation Number up to 2011 Hotel Shop School Experiment Road (Snow Melting) Public Building Office

20 New National Stadium for 2020 Olympic and Paralympic Japan Sport Council