The Effect of Adjacent Room Heat Transfer on Household Heat Metering

Household heat metering has become an inevitable trend in the reform of heating in northern China, and it aims to realize energy saving from users’ behavior while ensuring the indoor thermal comfort. Due to the different building envelopes, occupants’ preference and occupancy rate of each house, the heat transfer from adjacent room will greatly affect the fair share of the household’s heating fee. This study adopts EnergyPlus for building modeling and heating load calculation. A total of 17 rooms in one building are measured with temperature in both indoor and outdoor from Jan 22 to Feb 5, 2018. Building model is established according to the real building plan and envelope materials, and the time-dependent temperature of the simulated room is compared with the minutely measured temperature to validate the model accuracy. With the valid model, the actual ratios of heat transfer go to/from adjacent room to the heating load are calculated. The results indicate that the heat transfer to adjacent rooms in one day accounts for near 70% of the total heating load, which will provide basic data for fair heating charging and be conducive to the implementation of household heat metering in China.