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Mitigation of Global Warming and Heat Island Phenomena with Geothermal Heat Pump Systems

The application of geothermal heat pump systems that use shallow ground as a heat source enables highly energy efficient air-conditioning and snow-melting. The system also mitigates the heat island phenomenon, since the exhaust heat from cooling operations is not emitted into the atmosphere. In the Energy Resources Engineering Laboratory, the optimal designs for geothermal heat pump systems are studied though field tests and numerical simulations, which are also used to promote installation of the systems.

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Schematic illustration of geothermal heat pump systems

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Drilling of ground heat exchangers

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Heat pump for heating/cooling of a greenhouse


Energy Resources Engineering Laboratory,
Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University
Professor Ryuichi Itoi
Assistant Professor Toshiaki Tanaka
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