Patent ID: 7219505
Filing Date: 2007-05-22
Classification: F24F,F25B

Abstract:
1. A system having a hot gas reheat circuit and a cooling circuit comprising: the cooling circuit comprising: the hot gas reheat circuit comprising: the system further including a first means for controlling a flow of a refrigerant in fluid communication with the discharge side of the compressor and switchable between a first position in which high pressure refrigerant flows through the hot gas reheat circuit and is blocked from flowing to cooling circuit and a second position in which the refrigerant flows to the cooling circuit and is blocked from entering the reheat circuit; means for directing air from a space across the evaporator to cool and dehumidify the air and, when activated, the reheat exchanger to reheat the air; a cooling by-pass circuit providing fluid communication between the suction side of the compressor and the reheat heat exchanger including a second means for controlling the flow of remaining refrigerant out of the hot gas reheat circuit and switchable from a first position in which refrigerant flows from the hot gas reheat circuit when the first means for controlling is positioned to direct refrigerant to the cooling circuit and a second position in which the flow of refrigerant is blocked from leaving the hot gas reheat circuit when the first means for controlling is positioned to direct refrigerant to the reheat circuit; and a third means for transferring excess refrigerant from the reheat circuit to the condenser in the cooling circuit in response to a preselected condition in the hot gas reheat circuit when the first means for controlling is positioned to direct refrigerant to the hot gas reheat circuit.