From coolant flow and inlet/outlet temperature difference, compute heat-exchange power (kW) by specific heat, and back-calculate the cooling-water flow needed to hold that load.
根据载冷剂流量与进出口温差计算换热功率,并可反算所需冷却水量
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Heat transfer rate | Q = m · c · ΔT, mass flow rate times specific heat and temperature rise | ISO 80000-5:2019, Quantities and units - Part 5: Thermodynamics |
| Heat transfer equation | Q = U · A · ΔT_m, with U the overall coefficient and ΔT_m the log mean temperature difference | GB/T 151-2014, Heat exchangers |
| Log mean temperature difference | ΔT_m = ( ΔT1 - ΔT2 ) / ln( ΔT1 / ΔT2 ) | GB/T 151-2014, Heat exchangers |
| Counter-flow versus parallel flow | For the same terminal temperatures, counter-flow gives a larger mean ΔT and better recovery | Incropera FP, DeWitt DP, Fundamentals of Heat and Mass Transfer |
冷却换热功率计算工具用于暖通空调、冷却系统中的换热功率计算。输入载冷剂流量、进出口温差、密度和比热容,即可计算换热功率、每小时换热量、质量流量,并支持反算满足目标功率所需的冷却水量。