Optimization Operation Research Of Air Source Heat Pump Hot Water System In Chongqing Students Apartment

With the development of economy and the improvement of people's living standard, people's demands of living hot water become bigger, forming a enormous hot water consumption market. As a high efficient energy-saving equipment, air source heat pump water heater will occupy an important position in the international market. For students' apartment buildings, hotels and the public building, air source heat pump hot water system played a powerful role. Using air source heat pump water heater to prepare living water, not only can save energy effectively, but also is free from pollution to the environment. It is a kind of clean energy, so there are broad development space in the domestic market and application prospect.This paper briefly introduces the air source heat pump hot water system and detailedly introduces working principle ofthe heat pump water heater units and the heat pump hot water system. At first, in view of the energy consumption status hot water at home and abroad, this paper introduces the significance of the subject. Based on the development at home and abroad and the present situation, put forward the key and the research content. Briefly expounds the significance of this topic.At home and abroad the common forms of heat pump hot water system are: instantaneous air-source heat pump water heater and circulating air-source heat pump water heater. In this paper in view of the air source heat pump hot water system in the student apartment, and presents design method of the two conventional systems , mainly including the selection of the design of heat pump units, the design of the pump water tank, pump matching and piping installation. According to the existing problems of the initial system design and operation, put forward some considerations: the location of heat pump units,the arrangement and the choice of the water pump , noise and system energy saving.Combining with the actual engineering in a Chongqing university, this paper presents the actual engineering design of two different hot water systems in the actual situation. Analyze the actual operation of control mode,parttime temperature changing of water tank and network and the water consumption and power consumption in the whole year of instantaneous air-source heat pump water system. Briefly introduces the operation of circulating air-source heat pump water system, based on the analysis of annual energy consumption , circulating system is in good application in low floor and public bathroom student apartments . According to investigation results of the actual use of two system, from bath fee, water temperature, water pressure and system satisfaction,we can know that many instantaneous air-source heat pump water system in the student apartment in more suitable for a wide range of applications.This paper makes a further study in the test of the project of instantaneous air-source heat pump water system. Through the analysis of unit COP in instantaneous make-up water time, respectively do some research of instantaneous heating consumption and circulating heating consumption. Also discussed the influence factors of systems energy consumption in the actual heat pump hot water system, such as the actual outdoor climate condition, unit and the pump configuration, supply and return water temperature setting, unit operation time, etc; Combining with the system the influence factors and the analysis of system's energy consumption,therer are three optimization schemes: According to the effects of environment temperature on a unit, Scheme one is optimized instantaneous make-up water time. After the optimization the effectof power saving is not significantly, After the optimization the effectof power saving is not significantly, but circulating heating power consumption becomes lower with the reduction of circulating heating water consumption. So it can be concluded that the environment temperature has little influence on the energy consumption of the instantaneous heating mode, energy saving effect of changing circulating model is more remarkable .According to the result of scheme ii and observation of the change of the temperature in water tank , adjust the operation time and transforme hot water pipe system.After that the cycle of heating system model almost no longer start, energy consumption become lower significantly. It plays a guiding role to practical engineering. Based on scheme ii, the system design parameters are optimized in scheme iii,so as to save the initial investment effect.At last this paper focus on comparison of prime heating system and air source heat pump hot water system , do analysis on economy and energy-saving. The running costs and environmental benefits of boiler hot water system, not optimized air source heat pump hot water system, the optimized heat pump hot water system and conventional electric water heater is compared.It is theoretically proved that air source heat pump hot water system has great application prospect,and worthy of popularizing .