This experimental model is a centralized local dehumidification and cooling device, as shown in Figure 1. The system is mainly composed of four parts: dehumidification and cooling device, heat pump device, solution regenerator and intelligent control system. The cooling dehumidifier is located at the right end of the whole device and is mainly composed of a fan, a dehumidifier flow equalizer, a sprinkler and a dehumidifying liquid tank connected in sequence. The heat pump device is located on the left side of the dehumidifying and cooling device, which is composed of an evaporator, a compressor, a condenser and a throttle valve connected in sequence, wherein the cold end output of the evaporator is connected with the inlet of the sprayer in the dehumidifying and cooling device through a pipeline, and the solution recovery device is located on the left side of the heat pump device, which is connected in sequence by a flow equalising plate, a sprayer, a sprayer, the sprayer inlet is connected to the hot side output of the condenser in the heat pump device through a pipe. The control system is at the forefront of the entire device. Compared with the existing mine cooling system, the device has the following advantages: first, the system not only uses the heat of the heat pump, but also uses the cold capacity of the heat pump, and the efficiency is increased by more than 38%; second, the system can directly reduce the intake air The humidity of the workers improves the thermal comfort of the workers, improves the working environment, and ensures the physical and mental health of the workers. The device is mainly composed of four parts: dehumidifying and cooling device, heat pump device, solution regenerator and control system. The solution used in the device is a mixed solution of lithium chloride, calcium chloride, etc. as a main component. 1. As shown in Figure 2, the cooling dehumidifier is mainly connected by a fan, a dehumidifier flow equalizing plate, a sprayer and a throttle valve in sequence. The solution in the dehumidifying liquid tank flows into the evaporator of the heat pump device through a part of the solution pump, and the other part flows into the regeneration liquid tank through a liquid level balance pipe. This part of the cold solution flowing into the cold end of the evaporator of the heat pump device sprays the air through the sprayer. At this time, the air comes into contact with the cold concentrated solution, and the solution takes away the moisture in the air, so that the air becomes low-temperature dry air and is discharged through the air cylinder. At the same time, the cold concentrated solution becomes a dilute solution with a slightly higher temperature after spraying and flows into the dehumidification liquid tank.