RALPH R KIRSCH
Engineers in Wexford, PA
License number
Pennsylvania PE001072K
Category
Engineers
Type
Professional Engineer
Address
Address
Wexford, PA 15090
Professional information
Air-Cooled Condenser Pressure Control At Low Ambient Temperatures
US Patent:
3958429, May 25, 1976
Filed:
Jan 17, 1975
Appl. No.:
5/541863
Inventors:
Ralph R. Kirsch - Wexford PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
F25B 3904
US Classification:
62184
Abstract:
This invention relates to a refrigeration system having an air-cooled condenser and, more particularly, to maintaining high-side pressure in the condenser at normal levels at low outdoor ambient temperature by the provision of a reversible cooling fan, cooling air being directed across the condenser in the conventional direction when the high-side pressure is above a predetermined level and diminishing the volume of cooling air flow across the condenser when the high-side pressure is below a predetermined level.
Refrigerant Mass Flow Control At Low Ambient Temperatures
US Patent:
3977205, Aug 31, 1976
Filed:
Mar 7, 1975
Appl. No.:
5/556297
Inventors:
Adam A. Dreisziger - Coraopolis PA
Ralph R. Kirsch - Wexford PA
Ralph R. Kirsch - Wexford PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
F25B 500, F25B 3902
US Classification:
62117
Abstract:
This invention relates to a refrigeration system having an air-cooled condenser and more particularly to maintaining an adequate mass flow of refrigerant to the evaporator at low high-side pressures resulting from low ambient temperatures, by providing a dual refrigerant distributor system, refrigerant being metered through only one distributor when the high-side pressure is at or above a predetermined level and refrigerant being metered through both distributors when the high-side pressure drops below the predetermined level.