多壳体凝汽器在非对称传热工况下的背压计算方法研究

摘要

A calculation method of multi shell condenser back pressure in asymmetric heat transfer condi-tions was established based on the heat exchange principle of condenser and the characteristics of steam flow resistance.As a example,the back pressures were calculated for a nuclear power plant three shell condenser without any equalizing pipe and with two ones.And the effect of equalizing pipe′s diameter,sea water temperature,and heat duty on the inhibition of back pressure difference were discussed in detail.%基于凝汽器的传热原理和蒸汽流动的阻力特性，建立了求解多壳体凝汽器在非对称传热工况下的背压计算方法，以某核电机组三壳体凝汽器为例，计算了无连通管和有连通管两种情况下的各台凝汽器的背压，并详细讨论了连通管直径、海水温度以及热负荷对背压差的影响。