Abstract
The drum-type washer dryer which heat pump was used for because of dryness was mass-produced in our company in the world for the first time. The air flow was analyzed by using CFD to make that heat pump unit evolve more. The position of the heat exchanger and the fan and the air flow way form were changed and development unit decreased the pressure losses of the air flow way drastically. Moreover, it became effectively available the whole surface of the heat exchanger, and 20% reduced the capacity of the heat exchanger. Moreover, a development unit was combined with the new-model fan, and ventilation noise in dryness was decreased.
