Study On Energy Recycling Water Source Heat Pump System

At present our country energy form extremely is intense, the construction energy consumption holds the quite great proportion in the energy consumption, According to the statistics 2000 construction energy consumption accounted for the total energy consumption proportion is 27.7%.Along with lives of the people level enhancement,set a higher request to the environment comfortableness,has caused the construction energy consumption aggravating.The construction energy conservation bears the brunt,while the surface water source heat pump technology obtained the gradual value and the application by its energy conservation environment-protective and the sustainable development characteristic in the construction heating air conditioning domain.This article first reviewed the domestic and foreign surface water source heat pump research application present situation, the handling characteristics, and briefed the turbine pump domestic and foreign development present situation.From aspects and so on water volume, water quality, water temperature analyzed the Chongqing area water resources condition, the research had indicated the water source heat pump technology in the Chongqing area was feasible;But, Chongqing area applies the big discrepancy in elevation between water source heat pump technology particularity machine room and river water level,will be able to restrict the earth's surface source of water fever pump technology application in Chongqing area. This paper analyzes the water source heat pump project system form in Chongqing, the closed pipeline can enable in the cooling aqueous system to have the very big negative pressure,so that takes the aqueous system to be unable the normal operation;while the open channel road can increase takes the aqueous system lift of pump;Increasing by taking water energy consumption becomes restraint river source of water fever pump technology bottleneck developing in Chongqing area.If will be able to recycle the gravitational potential energy which the great elevation difference will form enable the water source heat pump technology in Chongqing to have a more widespread application.This article proposed solving the Chongqing area of surface water-source heat pump application of the limitations of the method, energy recycling water source heat pump system, namely use turbine pump recycling cooling water drainage system gravitational potential energy.In this paper,introduced the system form of energy recovery systems for water-source heat pump system, the characteristics of the pump-Water Turbine, and the matching problem, as well as water tanks,and the design of pumping station structures,solving the core issues in recycling cooling system energy. Analysis of the variable flow of cooling water, pump frequency control methods, such as the frequency range, and fitting pump performance curves by Matlab, making the optimization model of variable frequency pump and water turbine pump.This article finally has carried on the efficient analysis to the energy recycling water source heat pump system. Using Dest energy consumption simulation software simulation construction energy consumption,and has analyzed the convention air-conditioning system and the energy recycling water source heat pump system energy consumption in this foundation.The result indicated the energy recycling water source heat pump system is opposite in the convention air-conditioning system fractional energy savings is 20.8%, may save the standard coal 291.1 tons every year.Putting forward the idea of comprehensive energy efficiency ratio for the system,that is the cooling(heating) load of the airconditioning system divided by the total power, by comparing with conventional air conditioning system, the results showed that comprehensive energy efficiency ratio of energy recovery systems is higher ,the system is more energy saving.