A Study on the Household Heat Metering with Dynamic Temperature Method

Abstract

In this paper, the dynamic temperature method was used to establish heat consumption allocation model of residential buildings and a new household heat metering was proposed. The public heat consumption and variable heat consumption were described. According to the envelope characteristics of the residential buildings and then based on the thermal balance analysis of room and envelope, the formulas of effective heat consumption and heat consumption allocation coefficient were derived in this paper. In the derivation process of the effective heat consumption, frequency-domain regression model, plate heat-storage model, and transparent envelope’s steady-state heat transfer model were involved. Finally, these models were validated by the data from energy efficiency inspection of a low-energy building in Dalian City. Test results showed that, in the calculation of the accumulated heat consumption compared with the measured values, the cumulative 14 h later, the relative error remains below 10 %; the cumulative 17 h later, the relative error remained about 6 %. It is basically satisfied the engineering requirements.