流差式热量表计量原理及热流当量系数测定

流差式热量表主要由流体温差传感器、热水流量计组成，通过测定热流当量系数、计量热水流量可计算出热用户的用热量，省去了传统热量表的计算器。分析了流差式热量表关键装置——流体温差传感器的结构及流量差分原理，探讨了热流当量系数的测定方法。

Measurement Principle of Flow Differential Calorimeter and Determination of Equivalent Coefficient of Heat

Flow differential calorimeter is mainly composed of fluid temperature difference sensor and hot water flowmeter. The heat consumption of heat users can be calculated by determining equivalent coefficient of heat and metering hot water flow, and the calculator of traditional calorimeter is saved. The flow differential principle and the structure of fluid temperature difference sensor which is the key device of flow differential calorimeter are analyzed. The determination methods of equivalent coefficient of heat are discussed.