Combined heat metering in many buildings based on indoor temperature

The implementation of combined heat metering in many buildings can not only reduce the total investment of heat meters, but also solve the measuring problem that there is no condition to set separate heat meter. Gives combined heat metering implementation criterion formulas, and obtains the conditions of the combined heat metering as follows: the structural volume thermal index of equivalent building and the volume thermal index of single building are similar; and the measurement error of combined heat metering and separate heat metering is less than the maximum permissible error.