An on-off Control Strategy to Reduce Return Water Temperature

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Heat control can reduce the return water temperature, playing an essential role in efficient heating system. On-off valve with simple action and low resistance is more reliable and durable than the common thermostatic valves, especially in Chinese network whose circulating water is in bad quality. In this article, we explore the relation between the on-off time and return water temperature, which is further used to raise a new control strategy. The strategy can prevent the hot water flowing into the return pipe so that keep the return water at low temperature. Some corresponding devices have been applied in serval apartments and their performance achieves the expectation to reduce the return water temperature. Furthermore, some other methods that can even reduce the temperature are proposed based on this control strategy, which show the good prospects for development.




Li, Y., & Xia, J. (2017). An on-off Control Strategy to Reduce Return Water Temperature. In Energy Procedia (Vol. 116, pp. 452–459). Elsevier Ltd.

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