The Contrast Exprimental Study And Simulation Analysis Of Sewage Source Heat Pump And Ground Source Heat Pump In Hot Summer And Warm Winter North Area

There are two kinds of direct and indirect types of sewage source heat pump.Due to the special wastewater quality,direct water source heat pump system the biggest problem is the problem of heat exchanger corrosion blocking and crew.Indirect sewage source heat pumps avoid similar problems effectively,but due to the intermediate heat exchanger leads to the initial investment to improve the heat transfer efficiency decreased.Therefore indirect sewage-source heat pump and research more focused on improving the above-mentioned two aspects.The ground source heat pump has a long research history.Currently,the ground source heat pump research is more concentrated in the hybrid heat pump system.Including ground source mixed with solar energy,cooling tower,boiler,water source and so on.However,the current domestic and foreign comparative study on ground source heat pump system and water source heat pump system is less.The characteristics of the ground source heat pump is energy saving,environmental protection and efficient.All the year,as a source of heat and cool soil temperature keep constant and high operating efficiency.Therefore,the quality comparison of the two systems has good prospects for the study.It has a stable and plenty of water in the city,and the temperature is higher than 20 degrees is as good as cold and heat source.The main contents of this paper include the following aspects.In this paper,the experiment involved sewage source heat pump systems and ground source heat pump systems which are operate independently.By setting specific experimental method to measure the experimental data,it can compare the performance of the merits of the two systems.By measuring,in summer the sewage source heat pump unit COP is about 3.9,system COP is about 3.3.Hot water electricity consumption is about 14 kwh per ton.In winter the sewage source heat pump unit COP is about 3.5,system COP is about 3.0.Hot water electricity consumption is about 15.5 kwh per ton.In summer the ground source heat pump unit COP is about 4.5,system COP is about 3.4.Hot water electricity consumption is about 12 kwh per ton.In winter the ground source heat pump unit COP is about 4.4,system COP is about 3.2.Hot water electricity consumption is about 12.5 kwh per ton.In short the COP of ground source heat pump is higher than the sewage source heat pump.In summer the value is 13.5%.In winter the value is 15%.According to Design builder software internal settings,the process of software modeling is introduced in detail in this paper.It concluded that the highest power consumption is in May,the lowest power consumption is in March.In the student apartment building energy consumption of each component,when using a sewage-source heat pump,lighting energy consumption accounted for 20.8%of total energy consumption,equipment energy consumption accounts for 27.1%of total energy consumption,hot water system energy consumption accounted for 52.1%of total energy consumption.When using a ground source heat pump,lighting energy consumption accounted for 22.1%of total energy consumption,equipment energy consumption accounts for 29.1%of total energy consumption,hot water system energy consumption accounted for 48.8%of total energy consumption.Lighting and equipment energy consumption doesn't change with the supply of hot water production.Hot water system energy consumption is largest in the total energy consumption.It need to focus on building energy efficiency.Comparing the situation of energy consumption,ground source heat pump system is more energy saving.