Actions for Measurement and analysis of domestic hot water loads of three Navy buildings at Memphis Naval Air Station, Millington, Tennessee : implications for decentralized small cogeneration
Measurement and analysis of domestic hot water loads of three Navy buildings at Memphis Naval Air Station, Millington, Tennessee : implications for decentralized small cogeneration
Decentralized small cogeneration is the use of cogeneration equipment with electric generating capacities less than 500 kW at individual buildings or building complexes served by a common mechanical equipment room. Cogenerated heat could be used in Navy buildings for space heating, space cooling, or domestic water heating. In most climates, production of domestic hot water is the best use for cogenerated heat because it is needed virtually every day of the year. The Navy initiated this study because information on domestic hot water usage in Navy buildings was either non-existent or of insufficient quality and reliability to confidently design a small cogeneration installation. Hourly domestic hot water data were measured by a flow meter and temperature sensors and recorded by an electronic data logger. The data were plotted to display their characteristics, and they were analyzed with a simple heat storage model to examine the effects of heat storage on the utilization and proper sizing of a cogeneration system.