Experimental study on the heat transfer characteristics of new-type carbon-plastic shell and tube seawater heat exchanger
In the seawater source heat pump,metal shell and tube heat exchanger has the problem of tube bundle corrosion,and plastic shell and tube heat exchanger has the problem of poor heat transfer performance,so a new carbon-plastic shell and tube seawater heat ex-changer is proposed in this study.The design calculation and experimental study of carbon-plastic shell and tube heat exchanger were carried out,and the experimental results show that the heat transfer coefficient of carbon-plastic shell and tube heat exchanger under the same working condition is greater than that of ordinary plastic heat exchanger.When the cold water flow rate is certain,the heat transfer coefficient of carbon-plastic shell and tube heat exchanger increases with the increase of hot water inlet temperature;under the condi-tion that the hot water inlet temperature is kept constant,the larger the cold water flow rate is,the larger the heat transfer coefficient and the shell pressure drop is,and the Eu is re-duced;increasing the hot water inlet temperature and the cold water flow rate simultaneous-ly has a significant effect on the heat transfer coefficient of carbon-plastic shell and tube heat exchanger.The research results provide theoretical support and technical guidance for the practical application of carbon-plastic shell and tube heat exchanger.
carbon-plasticheat exchange characteristicshell and tube heat exchangerheat transfer coefficientpressure drop
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