Research Of The Law Of Heating Load And Indoor Temperature With Household Heating And Heat Metering System

As one of the most means of energy efficiency for buildings, it is imperative that put household heating and heat metering technique into practice. But it is a fresh thing, and has connection with national policy, tradition, living custom and management, and so on. This problem is one of difficult things to transit from planned economy to market economy. In this dissertation, problems brought by heat metering technique and several related important problems were studied and analyzed.Based on thermal comfort formula and PMV/PPD evaluation indices, design indoor temperature of residential building with household heating and heat metering systems was studied in this dissertation. It was determined that the range of indoor temperature is 16C~24C when design indoor temperature is 20C. Of course, increase of design indoor temperature must lead to increase of energy consumption, so the feasibility of 20C is demonstrated from the aspect of building consumption. As far as energy efficiency buildings, design indoor temperature is increased, but its energy consumption is less than that in ordinary buildings at the temperature of 18C.In this dissertation, takes representative room with household heating and heat metering systems, and analyzes the law of indoor temperature, studies thecooling and reheating process in the representative room and discovers that indoor temperature is attenuation by the law of negative exponent when radiator-thermostats are resized or turned off. Owing to the influence of thermal capacity in buildings, the attenuation of indoor temperature is very slow. In the same time, the temperature curve in design day was obtained.Through the studies of the above problems, the key problem of heating load calculation and the criterion of building energy efficiency was resolved. It is significant for perfecting heat metering technique and providing specifications of HVAC.