Abstract
This paper reports application study of newly developed turbo heat pump for 130 °C water for an industrial process in an actual factory. The heat pump is characterized by high efficiency and large heat output, by using a state-of-the-art turbo compressor. The heat pump requires a low temperature heat source. The heat demand is for several drying furnaces in the factory, which requires producing hot air of 120 °C. The heat exchanger was designed to produce the hot air. Experiments were conducted to confirm the performance of the heat exchanger with a reduced size of the heat exchanger. Low temperature heat sources are from both exhaust gas of the drying and annealing furnaces. The heat exchangers were also designed to recover heat of the exhaust gas. As a result, it was confirmed that the heat pump was able to satisfy the present heat demand while retaining high efficiency.
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