Technical and economic analysis of constant flow control and constant-variable flow control for heating systems

To avoid thermal misadjustment, large flow with small temperature difference mode is often adopted in operation practice, and the actual flow rate is usually higher than needed, especially in the user side of the system. Taking the heating system of a district as a model, works out a constant-variable flow control method and concludes that this method is more economical than constant flow control by theoretical calculation and actual testing.