The Analysis Of Heating System Of Geothermal Combined With Absorption Heat Pump

Lithium bromide absorption heat pump system can be an effective recovery inenergy saving, a variety of low-temperature waste heat, it can play an important rolein reducing carbon emissions. It will produce a large number of low-temperaturegeothermal water in the northern winter heating using geothermal direct supply ofheating mode, this part of the low-grade heat is a huge number, but the temperature isabout45℃, the direct use of the water is very difficult, the low-grade water is usuallyrecharge or directly discharged into the environment, not only geothermal water hasnot been fully utilized, but can also cause environmental thermal pollution. If you areusing the absorption heat pump system to recover this part of the heat energy, it willhave obvious economic and environmental benefits.In this paper, on the basis of a detailed analysis of the absorption heat pumpapplications and development of domestic and foreign, the Tianjin Binhai PetroleumVillage geothermal direct supply combined with absorption heat pump heating modeis to be researched and analyzed. Select the important aspect of the energy-savingemission reduction, and running costs as evaluation object, the original heatingprogram and the geothermal direct supply combined with absorption heat pumpheating mode of the Tianjin Binhai Petroleum Village is calculated and compared. Theresults show that after the transformation of the2011-2012heating season energyconsumption66%lower than the energy consumption of2009-2010heating season.After transformation, the emission reductions of SO₂is8.515t, emission reductions ofnitrogen oxides is18.417t, emission reductions of soot is12.780t, emission reductionsof CO₂is8926.810t.By actual test, the calculation and analysis, we get the coefficient of performanceof geothermal direct supply combined with absorption heat pump system. Using unitsheat of energy costs and primary energy ratio as evaluation, compared geothermaldirect supply combined with absorption heat pump with the ground source heat pumpheating mode, the gas boiler heating mode, coal-fired boiler heating system, it showsthat units heat of energy costs of geothermal direct supply combined with absorptionheat pump（62.5RMB/GJ） is lower than ground source heat pump heatingmode（134.8RMB/GJ）, gas boiler heating mode（114.5RMB/GJ）,but higher thancoal-fired boiler heating system（40.0RMB/GJ）. The primary energy ratio ofgeothermal direct supply combined with absorption heat pump（1.584） is higher than ground source heat pump heating mode（0.700）, gas boiler heating mode（0.774）,coal-fired boiler heating system（0.658）.The geothermal direct supply combined with absorption heat pump systemutilize geothermal water to emissions below25℃, the heating coefficient of heatingsystem is above1.7. This study may have guiding significance on the transformationand design of the heating system.