Model 7301
Low-Pressure Condenser-Filter Air Dehydrator
to Replace NAXI® Refrigerant Dryer
Features:
- Drop-in Replacement for Existing NAXI® LPAC Refrigerated Dehydrator
- No Ozone-Depleting Substances
- No Leak-Prone Refrigerants.
- No Refrigerator Plant Maintenance Hassles.
- Backup Auto Drain.
- Outlet Air Temperature (indicating outlet dew point) with remote alarm contacts. *
- Inlet and Outlet Chilled Water Temperatures.
General Description:
The Model 7301 Condenser-Filter Dehydrator is a convenient, economical replacement for the R12-cooled refrigerant dehydrator originally furnished with the Dresser-Rand NAXI® LPAC on CG-47 and FFG-7 classes (The LPAC outputs on DDG-51 and DD-963 class ships are dried by stand-alone units such as the Howell Model 5295). Its foundation footprint is an exact duplicate of the refrigi-filter, for trouble-free retrofit. The Model 7301 uses the same rugged, maintenance-free chilled-water-to-air heat exchanger used in Howell’s other condenser-filters. The standard unit is furnished with basic instrumentation. The Model 7301 requires no electrical power for its operation.
The Model 7301 is accepted under contract No. N65540-02-D-0091 with NAVSEA Philadelphia and will be a part of the Machalt program.
Specifications:
- MIL-S-901D, Grade A high-impact shock.
- MIL-STD-167-1 vibration.
- EMI not applicable.
- Inlet Air Conditions:
- Flow Rate: to 100 scfm.
- Pressure: 80 to 150 psig.
- Temperature: to 125° F.
- Moisture: Saturated at 80 psig & 125° F maximum (0.015 lb water/lb air).
- Inlet Water Conditions:
- Temperature: 50° F.
- Flow Rate: 2 gpm.
- Outlet Air Conditions:
- Dew point 55° F (5 F° above chilled water inlet temperature).
- Maximum 5 psi pressure drop.
- Mechanical:
- Inlet and outlet air connections: 1-1/2" IPS MIL-F-1183 unions.
- Inlet and outlet water connections: 1/4" IPS MIL-F-1183 unions.
- Condensate drain: 37° male flare fitting for connecting to the condensate drain now mounted on the LPAC skid. Additional backup auto drain with 1/4" IPS MIL-F-1183 union for optional connection to an overboard drain line.
- Mounting bolt pattern: Identical to the refrigi-filter installed on the NAXI® compressor.
- Electrical Requirements: None required.
- Instrumentation:
- Outlet air temperature (indicating outlet dew point), with remote alarm contacts.
- Inlet and outlet water temperature.
- Other instrumentation at purchaser’s option.
- Dimensions: 15" W x 18" D x 46" overall H.
- Weight: 235 lb dry; 242 lb wet.
Flow Schematic
