| 摘要 |
<p>A plant for drying materials such as timber comprises a refrigerating unit 11 coupled to a drying chamber 10. Fans exchange air between the refrigerating unit 11, the ambient environment, and the chamber 10. The refrigerating unit 11 includes a compressor 25, a condenser 12 located in the airstream entering the chamber 10, an evaporator 15, and valving means for controlling proportions of ambient air and air from the chamber passing through the condenser 12 and the evaporator 15. The refrigerating unit 11 operates primarily as a heat pump and can simultaneously function as a heat pump while venting moist air from the chamber 10 and recovering a substantial proportion of the energy contained within that moist air. <IMAGE></p> |
