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成果報告書詳細
管理番号20170000000346
タイトル*平成28年度中間年報 再生可能エネルギー熱利用技術開発 地中熱利用トータルシステムの高効率化技術開発及び規格化 再生可能熱エネルギー利用のための水循環・分散型ヒートポンプシステムの開発 
公開日2017/6/15
報告書年度2016 - 2016
委託先名国立大学法人東京大学生産技術研究所 鹿島建設株式会社 ゼネラルヒートポンプ工業株式会社
プロジェクト番号P14017
部署名新エネルギー部
和文要約
英文要約Title : Development of Distributed Water Source Heat-Pump System for Renewable Energy (FY2014-FY2016) FY2016 Annual Report

In this research, we develop a water source heat pump system and its components that can supply multiple heat demands of heating, cooling and hot water supply, efficiently with energy consumption and cost by utilizing a heat source water supply network using various renewable thermal energies, such as ground , solar, river water heat and etc. This research has two approaches of practicable and leading development, and the development target is reducing initial and running cost by 18% and 20%, respectively.
In the practicable-technology part, the followings have been developed.
(1) A water-loop experimental system excluding a water source heat pump for AC and hot water was developed. Field performance tests of a sky source heat pump system using a scroll compressor were conducted.
(2) A chiller unit of sky source heat pump and air-to-water heat exchanger were manufactured. A centrifugal compressor with HFO refrigerant was tested. A circuit test system of HFO refrigerant was developed and the heat transfer performance was measured.
(3) Improvement methods of a ground heat exchanger with large heat capacity were studied for practical use and trial samples were produced.
(4) A prototype of water source heat pump for heating and cooling, including DC inverter compressor and pump, was produced and the performances was tested. A constant-temperature system for performance test was produced.
(5) A prototype of water source heat pump for hot water supply, including DC inverter compressor and pump, was produced and the performance was tested.
(6) Simulation models of a chiller unit of sky source heat pump and ground heat exchanger with large heat capacity were verified using measurement data of previous fiscal year.
In the advanced-technology part, the followings have been developed.
(1) A small scale test building which incorporated the developed devices was constructed.
(2) In order to reduce transport power, distributed DC pump was linked with each water heat source heat pump (HP) and PVC was used as piping material for cost reduction of water loop.
(3) A sky-source heat pump, which was composed of solar heat collector panel and PV panel, was installed on the roof of the test building.
(4) A double helix geothermal heat exchanger was made and tested the performance.
(5) A prototype water heat source heat pump for duct type air conditioning which makes the whole building air conditioning possible was developed. The cooling COP 15.2 and the heating COP 6.1 were obtained.
(6) A water-source CO2 heat pump for domestic hot water supply was installed in the test building.
(7) A simulation for water flow in a piping system model of the same as the experimental facility was conducted using CFD. The characteristics of the pump control system, the pressure loss, and the flow situation were obtained.
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