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一、热量表测量热量的测量模型JJG225-2001《热能表检定规程》和城镇建设行业标准CJ128-2007《热量表》都给出了热量表热量积算的基本数学模型,如式(1)所示。Q=∫t0qm×Δh×dt(1)式中:Q——热量,k J;qm——流经热量表的载热液体的质量流量,kg/s;Δh——热交换回路中入口温度与出口温度对应的载热液体的比焓值差,k J/kg;t——时间,s。对于测量体积流量的热量表来说,其质量流量是
First, calorimeter measurement calorimetric measurement model JJG225-2001 “heat meter verification procedures” and urban construction industry standard CJ128-2007 “calorimeter” are given calorimeter heat calculus basic mathematical model, as shown in equation (1) Show. Q = ∫ t0qm × Δh × dt (1) Where: Q - heat, k J; qm-- mass flow rate of heat transfer fluid through the heat meter, kg / s; Δh-- inlet temperature in the heat exchange circuit And the outlet temperature corresponding enthalpy liquid enthalpy difference, k J / kg; t - time, s. For the measurement of volume flow calorimeter, the mass flow is