High-efficiency indoor air mover
A high-efficiency indoor air mover has been developed for the advanced electric heat pump. Preprototype air mover overall efficiency is approximately 40 percent, twice that of the conventionally applied squirrel-cage blower. The air mover consists of a 411 mm (16.2 inch) diameter single entry blower wheel carried in a volute sheet steel scroll and driven by a 250 W (1/3 horsepower) high-efficiency motor. The blower wheel uses ten backward curved, uniformly spaced, cambered plate blades. As installed in the advanced heat pump the air mover consumes 390 W of electrical power and delivers 662 l/s (1405 scfm) at 1092 rpm into an external static flow resistance of 87 Pa (0.35 inches of water). Although this air mover will cost about twice as much as the conventional squirrel-cage blower and motor of comparable flow performance the incremental premium cost at the retail level can be recovered in less than one year through energy savings assuming 6000 hours of operation per year with electricity at $0.05/kWh.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5934589
- Report Number(s):
- CONF-830640-3; ON: DE83014002
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-efficiency heat-pump fan
A high-efficiency heat pump fan