Drying plant, particularly for timber

Details Drying plant, particularly for timber Drying plant, particularly for timber

1979-01-30

1980-04-08

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

62 93, 62324, 62238, 34 134, F26B 2110

Patent

active

041965264

ABSTRACT:
A timber drying plant has a drying chamber through which air may be circulated by a fan in a circuit which includes a refrigerating unit. The refrigerant fluid circuit of the unit includes a dehumidification evaporator for outlet air and a condenser in the recycle air flow for returning to the latter least part of the heat extracted by the evaporator. The refrigerant fluid circuit also includes an auxiliary evaporator with control valve means whereby the auxiliary evaporator can be inserted in said fluid circuit so that the refrigerating unit operates as a heat pump absorbing heat from the external atmosphere through the auxiliary evaporator. A supplementary evaporator may also be included in the refrigerating unit and is connectable in parallel with the auxiliary evaporator to increase the heat pump effect. In another position of the control valve means the auxiliary evaporator acts as a condenser in circuit with the dehumidification evaporator to reduce the heating of the recycled air.

REFERENCES:
patent: 3337967 (1967-08-01), Smith
patent: 3744144 (1973-07-01), Weis
patent: 3940860 (1976-03-01), Unterreiner

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