Design Of Calculator For Heat Metering System Based On Temperature Area Method

Our central heating began in the 1950’s, subject to the planned economic system, cost of heating is measured by area in a very long time. Since 2000,on the basis of building a conservation-oriented society by the State Council executive meeting, universities has launched a major research on household heat metering heating system,and proposed a variety of heat metering allocation scheme. The following methods are currently in use:domestic heat meter, radiator heat allocation meter, on-off time-area determination, flow-temperature determination and temperature-area determination.In this paper, firstly several heat-allocation methods currently in use are studied theoretically. Then structure of the system is designed. Finally we completed design of software and hardware of the collect-calculator.The heat-allocation system based on temperature-area determination primarily consists of indoor temperature sensors(user terminal) which are placed in user rooms, a heat meter installed at the heat inport of the building to measure the total heat consumption, a collect-calculator used to receive data from indoor temperature sensors and the heat meter and complete heat allocation process and upload the result to PC, etc. The collect-calculator is the core device of the temperature-area determination system and the designation of it effects the capacity of the whole system.The system has been tested on a building in Lanzhou. We validated the feasibility of the system by data exported from PC. It indicates that the collect-calculator designation is feasible and the system works stably.