逆流热源塔传热传质模型建立与凝水调节的可行性OA北大核心CSCDCSTPCD

To study the feasibility of moisture condensation control in heat-source tower by operating parameter regulation,a mathematic model of heat and mass transfer between air and solution in the counterflow heat-source tower was developed and validated.The effect of the humidity ratio of inlet air and the solution inlet temperature on moisture condensation in the heat-source tower was investigated by using ethylene glycol aqueous solution as work fluid.The results show that the rate of moisture condensation decreases from 1.98 g/s to-0.40 g/s as the humidity ratio of inlet air decreases from 4.9 g/kg to 2.2 g/kg.The rate of moisture condensation decreases from 0.56 g/s to-0.07 g/s with a rise in the solution inlet temperature from-5 ℃ to-1 ℃.The rate of moisture condensation in the heat-source tower decreases with the decrease of the humidity ratio of inlet air and the increase of the solution inlet temperature.And solution's reconcentration can even be realized by heat-source tower itself.It is a new way to reduce the system demand of solution reconcentration and solve the solution reconcentration problem efficiently.