Dynamic Evaluation Indexes Of Hydraulic Pipe Network And Quantitative Research

Under the condition of partial load of air conditioning water system flow controlis one of the important measures to air-conditioning system energy saving in airconditioning almost become a choice in the design of the action.In a variable flow system, ideally, the terminal branch flow follow room loadchanges and make the corresponding adjustment, to ensure that the hydraulic balanceof the system. How to achieve a dynamic balance of hydraulic pipe network is thenext building energy context, important changes in network design is different fromtraditional designs.Many projects are used as a measure of dynamic flow control valve dynamicadjustment of water, pipe network users according to their needs dynamic supply flow.The basic approach is only concerned about the needs of the user self, regardless ofthe user to adjust the impact of the pipe network, nor whether the pipe networkconditions meet user requirements for self-regulation. This adjustment method is easyto network traffic impact, make mutual interference between users, difficult to gaingood regulation effect.To make smooth network can realize effective regulation, by increasing thehydraulic stability of the pipe network is simple and effective way. The mostunfavorable factors affecting dynamic hydraulic regulation is when each useradjustment, network traffic between mutual interference, namely, adjusting thecoupling between the nodes. Hydraulic stability is to solve the mutual interferenceamong users when conducting flow regulation. However, the stability of the waterrequired in the traditional network design did not make. The choice is usually dry pipeAir conditioning water system is based on the recommended ratio or economicfriction velocity; determine the diameter of the main pipe, carried branch hydraulicbalance. How this design out of the water pipe network stability is not known.This article in view of the existing air conditioning water system in the designprocess of shortcomings, namely the equipment at the end of the pipe network under partial load, the uneven distribution of flow, in order to improve the dynamichydraulic stability of the network, this paper proposes a new pressure drop ratiocontrol (pipeline pressure drop accounting system pressure drop proportional).Through theoretical calculation and analysis of the results found that the airconditioning system can make each under partial load at the end of the flowdistribution have been obviously improved, so that the control method has greatenergy saving space, at the same time calculation and analysis can know the actual airconditioning water system design and operation of the regulation.