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Performance of a Commercial Hot Water Boiler.

pdf icon Performance of a Commercial Hot Water Boiler. (1415 K)
Park, C.; Liu, S. T.

NISTIR 6226; 22 p. November 1998.

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National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161.
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boilers; boiler computer model; boiler part-load performance; commercial boiler; fire-tube boiler; hot water boiler


In responding to ASHRAE SPC 155P's interest and to provide additional evidence on a possible linear relationship between output and input of a boiler under part load conditions, the National Institute of Standards and Technology undertook to conduct a series of computer simulations utilizing a revised version of a computer simulation program, DEPAB2. This program was developed previously by NIST for commercial fire-tube steam boilers, and was modified so that it could be used to simulate the operations of a commercial fire tube hot water boiler. Actual boiler specification data from a leading boiler manufacture was used as input data to the program for the simulation study. In this paper, the computer model of a commercial hot water boiler and the actual boiler specification are described. Full and part-load performance of the simulated, commercial hot water boiler is presented. A good linear correlation between output energy and input energy is found. Based upon the correlation, a suggestion is made to reduce experimental burden in testing the performance of commercial boilers.