Abstract
In order to apply the ground source heat pump in the drying industry, a set of open-circuit ground source heat pump drying system was designed for theoretical analysis and compared with the closed air source heat pump drying system, The results are shown below: When the drying temperature (air temperature required for drying) is 40°C-60°C, the system performance coefficient( COP) of the drying system is 3.2-5.2. Dehumidification per unit energy consumption( SMER) is affected by the external ambient temperature. The highest and lowest SMER corresponding to the ambient temperature of 20°C are 4.4 and 1.4, and the highest and lowest SMER corresponding to the ambient temperature of -10°C are 2.6 and 1.1. When the ambient temperature is high and the drying temperature of drying materials is low (less than 50°C or so), the open-circuit ground source heat pump drying system has a slight advantage over the closed air source heat pump drying system, and SMER is higher.
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