| Summary: | 碩士 === 國立勤益科技大學 === 冷凍空調與能源系 === 107 === This paper proposes an improved design for the existing air-medium heat pump sludge drying system, which focuses on the thermal balance of the entire system. The new design install a new auxiliary heat exchanger to cool the circulating air from the drying chamber, and remove excess heat from the sludge drying chamber, so that the system does not shut down due to the excessive heat accumulation, in the circulating air system With accurate testing and adjusting controllable conditions in the system such as temperature humidity, heat removal,etc.,the system can achieve a stable operation condition
Due to the heat pump drying system of this study adopts the design of continuous sludge feeding, the equipment has been produced in the sewage treatment plant of an Industrial zone in Changhua. In actual operation, the equipment often overheats and causes high pressure,removing excessive heat from drying chamber is essential
In order to improve the problam, we installed an auxiliary heat exchanger at the return air inlet of the system, and the measured results that the dehumidification efficiency is increased by 0.087 kg/kwh. The starting and stopping frequency of the equipment is reduced from 6 times/hr to no longer trip.
In order to improve the problam, we installed an auxiliary heat exchanger at the return air inlet of the system, and the measured results that the dehumidification efficiency is increased by 0.087 kg/kwh. The starting and stopping frequency of the equipment is reduced from 6 times/hr to no longer trip.
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