Process heat capacity reducing device for improving performance of dehumidification heat exchanger

The invention discloses a process heat capacity reducing device for improving performance of a dehumidification heat exchanger, and relates to the field of dehumidification of air conditioning systems. The device comprises a first dehumidification heat exchanger, a second dehumidification heat exchanger, a main loop circulating pump, an auxiliary loop circulating pump, a main loop first three-way valve, a main loop second three-way valve, an auxiliary loop first three-way valve, an auxiliary loop second three-way valve, an auxiliary loop third three-way valve and an auxiliary loop fourth three-way valve. A main loop is used for introducing a cold source into the dehumidification heat exchanger; An auxiliary loop is used for heat exchange between the first dehumidification heat exchanger and the second dehumidification heat exchanger. The energy loss of the dehumidification heat exchanger in the dehumidification mode and regeneration mode switching process is reduced, and the energy efficiency of actual operat