Abstract
The largest proportion of energy in housing is consumed by hot-water supply system, so it is important to properly evaluate the consumption of hot and cold water. In that process, load-survey is most effective way to inquire the actual volume and heat. But many times it is difficult to compare one data with another because each data usually depends on the temperature of cold and hot water, which change by seasons, regions, and supply sysytems. In this paper, we surveyed consumption of hot and cold water in 10 houses in apartment-house on Hyogo prefecture. To get rid of influence of cold water's temperature change, we introduce the evaluation method besed on volume and heat of mixed-hot-water on faucet. Through comparison between questionnaire and surveyed consumption arranged by that method, we could find good relation between residents' usage and difference in houses, each houses' annual change difference of hot water volume and heat. So we can recommend to arrange surveyed data by this method to make comparison between each data easier and to find out relation between actual usage and residents' behavior.
