On the basis of entransy dissipation theory

the heat transfer in main condensing zone of a condenser was analyzed

and calculation method of the entransy dissipation rate was developed.The results show that

major factors affecting entransy dissipation rate of the condenser were the cooling water inlet temperature

cooling water flow rate

air vapor content

pressure in the condenser and tube bundle arrangement.Along the cooing water flow direction

the entransy dissipation rate decreased gradually

and the reduction rate dropped with an increase in cooling water temperature.The variations of entransy dissipation rate along the flow direction varied little at different cooling water inlet temperatures.At temperatures between 5℃and 20℃

the entransy dissipation rate reduced sharply with an increase in the cooling water inlet temperature.Cooling water inlet temperatures higher than 20℃had no influence on the entransy dissipation rate.