AT-96-18-3 -- Effect of Seasonal Changes in Use Patterns and Cold Inlet Water Temperature on Water-Heating Loads PDF

Presents long-term test data obtained in 20 commercial buildings and 16 residential sites. The information illustrates the effects of variations in hot water load determinants and the effect on energy use. It is also useful as a supplement to the load profiles presented in the ASHRAE Handbooks and other design references. The commercial facilities include supermarkets, fast-food restaurants, full-service restaurants, commercial kitchens, a motel, a nursing home, a hospital, a bakery, and laundry facilities. The residential sites were selected to provide test sites with higher-than-average hot water use. They include 13 single-family detached residences, one 14-unit apartment building, and two apartment laundries. Test data are available at measurement intervals of 1 minute for the residential sites and 15 minutes for the commercial sites. Summary data in tabular and graphical form are presented for average daily volumetric hot water use and cold inlet water temperature.

KEYWORDS: year 1996, energy consumption, hot water supply, water-consumption, cold water supply, water temperature, domestic, commercial, water heating, heat load, comparing, supermarkets, restaurants, kitchens, motels, nursing homes, bakeries, laundries,housing, flats, testing, measuring