High-efficiency commercial water heater development. Final report, November 1980-August 1984

Technical Report · Thu Nov 01 04:00:00 EST 1984

OSTI ID:5965708

Demetri, E P; Sespaniak, M P; Gerstmann, J

The development of a condensing water heater for commercial applications was completed. The selected concept consists of a high-efficiency water heater connected by appropriate plumbing to a stratified-temperature storage tank. A number of pre-production prototypes were fabricated and installed at nine representative commercial sites. Field tests were initiated in April 1983 and concluded in July 1984. These consisted of a side-by-side comparison with the existing conventional water heater at each site. The final test results obtained demonstrate standby loss rates less than one-fifth of conventional values and service efficiencies which average 32% higher than conventional system efficiencies. The comparative performance data obtained under actual usage conditions show that the condensing water heater would provide average annual cost savings of $920 per year and corresponding paybacks in the range of 0.9-1.5 years.

• Research Organization: Advanced Mechanical Technology, Inc., Newton, MA (USA)
• OSTI ID: 5965708
• Report Number(s): PB-85-149813/XAB
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320104 -- Energy Conservation
Consumption
& Utilization-- Commercial & Industrial Buildings-- (-1987)
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
APPLIANCES
BUILDINGS
COMMERCIAL BUILDINGS
EFFICIENCY
FIELD TESTS
HEATERS
PAYBACK PERIOD
TESTING
WATER HEATERS