Automatic distilled water adding and discharging device used in enthalpy difference laboratory

The utility model relates to an automatic distilled water adding and discharging device used in an enthalpy difference test room. Comprising a chamber for simulating a heat exchange environment, a water storage tank, a use water tank and an environment temperature sensor, an air inlet is formed in one end of the cavity, and an air outlet is formed in the other end of the cavity; the use water tank is communicated with the water storage tank through a first pipeline, and a water replenishing electromagnetic valve is arranged on the first pipeline; the use water tank is provided with a second pipeline, and the pipeline is provided with a drainage electromagnetic valve; the water supplementing electromagnetic valve, the water draining electromagnetic valve and the environment temperature sensor are all in signal connection with the controller, and the indoor temperature is detected based on the environment temperature sensor so as to control opening and closing of the water supplementing electromagnetic valve an