- Author
- Mulroy, W. J. | Park, C.
- Title
- Experimental and Analytical Investigation of a Residential Hot Water Boiler With Finned Copper Tube Heat Exchangers.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Energy, Washington, DC
- Report
- NBSIR 83-2648, April 1982,
- Distribution
- Available from National Technical Information Service
- Keywords
- residential buildings; water heaters; heat exchangers; cooling fins; boilers; gas valves; temperature measuring instruments; operating costs; computerized simulation
- Abstract
- In response to a request by a manufacturer of a nontypical boiler, the Department of Energy requested the National Bureau of Standards to perform laboratory measurements under controlled conditions of the effect on seasonal performance of several features (finned copper tube heat exchanger, water circulating pump delay, and gas valve modulation) of this boiler that might cause it to be unfairly treated by the existing test procedure. As a result of this study, recommended changes to the existing test procedure to allow rating tests with water circulating pump delay are presented. A recommended change to the assigned cyclic jacket loss factor and a simplified procedure for experimentally determining this factor are also presented. No change to the current test procedure treatment of gas valve modulation or flue gas mass flow as a function of temperature are recommended.