| With the development of economy and the improvement of people's living standard,residential and public buildings of the heating and air conditioning has become the general demand,the resulting energy supply has become current world each country had to face a public problem.Ground source heat pump system is with the global energy crisis and environmental problems and gradually arisen a heat pump technology,it has the "efficiency" and" instead of"the two most important features.This article mainly through the Guangxi University For Nationalities lovesickness lake Academy of ground-source heat pump system in vertical single U tube ground heat exchanger research,draw the following conclusions:1?The screw type ground source heat pump in air conditioning system heat heating,energy efficiency is about 4.8,the energy efficiency ratio of the system is about 3.8;in the business of domestic hot water heating mode,set the energy efficiency ratio is about 4.6,the energy efficiency ratio of the system in 3.7 or so.2?Vertical U tube ground heat collection tube connected to the sides of the trench can well number less than set layout heat exchange performance of the heat exchanger tube groove on both sides of the connection to the wellhead,layout.The heating mode,according to the experiment of measuring the working condition of the measured to the well flow rate maximum around the well distribution of flow and heat transfer can be modified,two rows of average heat transfer distribution respectively more than three or four,five,seven rows of average heat transfer layout0.78%,1.12%,1.74%,2.03%.Cooling conditions,according to the experiment of measuring the working condition of the measured to the well flow rate maximum around the well distribution of flow and heat transfer can be modified,two rows of average heat transfer distribution respectively more than three or four,five,seven rows of average heat transfer layout0.67%,1.62%,1.80%,2.88%.Cooling conditions in two rows,three rows,four rows,five lines and seven lines layout per meter deep well heat exchanger respectively heating condition is improved by 4.81%,4.93%,4.30%,4.75%,3.95%.3?The refrigeration and heating conditions,the local can well flow increases,can well per meter deep well heat average also increases ceaselessly,and cooling conditions per metre deep heat exchanger are slightly higher than the heating condition.The test system can well optimal flow in 1.55m3near/h.In the flow of substantially the same circumstances,working condition of every meters deep heat is slightly higher than that of the heating condition of each meter deep well heat exchange,heat transfer performance was improved by about 8%.4?The stable operation of units in the state,the experimental system in refrigeration conditions,found in the temperature range,screw type ground source heat pump unit configuration of soil source heat stability is better than that of water cooled screw chiller cooling tower cooling configuration stability.At an ambient temperature of 30?,31?C,32?,soil source heat pump water chiller energy efficiency ratio energy efficiency ratio increased by 2.67%,5.26%,5.88%.5.For the measurement of the soil source heat pump system for air conditioning and refrigeration,heating preparation of building energy simulation software based on Equest architecture rapid simulated.Guangxi Nanning in the hot summer and warm winter zone,the building in winter heating,summer cooling,due to the seasons of the year are high temperature,the air conditioning refrigeration the power required for the building's main energy consumption,followed by the lighting equipment for the consumption of electricity,air conditioning heating the concentrated in January and February,and less energy consumption. |
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