CALCULATING METHOD TO GET THE OPERATING CONDITION OF CENTRALIZED HEATING SYSTEM

摘要

PURPOSE: A calculation method of operation control conditions for a central heating system is provided to charge an appropriate price for heating and to minimize heat loss and power consumption when the quantity and the temperature of heating water supply are given, thereby decreasing unit cost. CONSTITUTION: A calculation method of operation control conditions for a central heating system determines the quantity and the temperature of heating water supply to minimize the rate of heat loss and power consumption. The quantity and the temperature of heating water supply are determined to minimize the rate of heat loss and power consumption relying on the inverse relationship between the temperature and the quantity of heating water supply. The calculation method of operation control conditions for a central heating system comprises the steps of: calculating the amount of heat, given the quantity of heating water automatically determined by a set initial temperature of heating water; setting up a relation formula between the temperature of heating water and the quantity of heating water, based on the amount of heat and the temperature of returned heating water after a circulation; calculating the temperature of heating water to minimize the sum of the rate of heat loss and power consumption using the relation formula; and determining the quantity of heating water supply according to the temperature of heating water. [Reference numerals] (AA) Consumed power P(kW); (BB) Flow rate Q(m^3/h); (CC) Supply water temperature T_s(°C); (DD) Heat loss H_L(kW)