Harold R Short

US Patent:

48502014, Jul 25, 1989

Filed:

Feb 10, 1988

Appl. No.:

7/154283

Inventors:

Philip D. Oswalt - Indianapolis IN
Harold R. Short - Greenwood IN
Steven E. Wash - Greenwood IN

Assignee:

Advantage Engineering Incorporated - Greenwood IN

International Classification:

F25D 1702

US Classification:

62185

Abstract:

A mechanically refrigerated chiller system for a process coolant has a process coolant circuit which includes a coolant reservoir with refrigerant evaporator coils in it. Coolant returns from the process to the reservoir through several and alternate paths. An additional coolant path is provided through a heat exchanger. An extra hot-gas line from the high pressure side of the refrigerant compressor is coupled through the heat exchanger to the refrigerant condenser. When the temperature of the coolant is too low, adjustment is made by adding heat to some of the coolant in the heat exchanger. Coolant temperature is sensed in an area where coolant returns from the process through a direct path and in another area where the coolant is leaving the evaporator through the aforementioned heat exchanger are mixed with a portion of the reservoir coolant.

US Patent:

47699981, Sep 13, 1988

Filed:

Apr 25, 1986

Appl. No.:

6/856033

Inventors:

Philip D. Oswalt - Indianapolis IN
Harold R. Short - Greenwood IN
Steven E. Wash - Greenwood IN

Assignee:

Advantage Electronics, Incorporated - Greenwood IN
Advantage Engineering, Incorporated - Greenwood IN

International Classification:

F25D 1702

US Classification:

62 98

Abstract:

A mechanically refrigerated chiller system for a process coolant has a process coolant circuit which includes a coolant reservoir with refrigerant evaporator coils in it. Coolant returns from the process to the reservoir through several and alternate paths. An additional coolant path is provided through a heat exchanger. An extra hot-gas line from the high pressure side of the refrigerant compressor is coupled through the heat exchanger to the refrigerant condenser. When the temperature of the coolant is too low, adjustment is made by adding heat to some of the coolant in the heat exchanger. Coolant temperature is sensed in an area where coolant returns from the process through a direct path and in another area where the coolant is leaving the evaporator through the aforementioned heat exchanger are mixed with a portion of the reservoir coolant.

US Patent:

48023388, Feb 7, 1989

Filed:

Feb 16, 1988

Appl. No.:

7/155764

Inventors:

Philip D. Oswalt - Indianapolis IN
Harold R. Short - Greenwood IN
Steven E. Wash - Greenwood IN

Assignee:

Advantage Engineering Incorporated - Greenwood NJ

International Classification:

F25D 1702

US Classification:

62 98

Abstract:

A mechanically refrigerated chiller system for a process coolant has a process coolant circuit which includes a coolant reservoir with refrigerant evaporator coils in it. Coolant returns from the process to the reservoir through several and alternate paths. An additional coolant path is provided through a heat exchanger. An extra hot-gas line from the high pressure side of the refrigerant compressor is coupled through the heat exchanger to the refrigerant condenser. When the temperature of the coolant is too low, adjustment is made by adding heat to some of the coolant in the heat exchanger. Coolant temperature is sensed in an area where coolant returns from the process through a direct path and in another area where the coolant is leaving the evaporator through the aforementioned heat exchanger are mixed with a portion of the reservoir coolant.