Hydraulic and Thermodynamic Condition Analysis of Unidirectional Loop Hot Water Heating System

A novel unidirectional loop hot water heating system has been proposed in order to improve the adaptability of the district heating system heat load growth and improve system hydraulic stability. There are four parts in this paper. The composition of the new system was introduced in this paper firstly. The hydraulic design and condition were discussed secondly. Then the thermal condition including node temperature calculation and local regulation mode were studied. In the end, a case study was done to analyze the hydraulic and thermodynamic condition during the operation. The results showed that the new system had straightforward hydraulic and thermal condition. Through this research, some reference could be provided for the practical application of the unidirectional loop hot water heating system.