Study On Simulation Performance Of Complementary System Consist Of Solaras Heat Pump And Heat-supply Network

With the development of production and living standards improved, the rapid growth of energy consumption, development and utilization of new energy sources in today's society has urgent need to address the hot issue. At present, natural gas is the energy of many of the world's cleanest energy, due to its rich reserves of natural gas development and utilization of more countries in the world's attention.Solar energy as a clean energy, not only the primary energy, but also renewable energy, solar energy resources are abundant, no environmental pollution. At present, energy and environmental issues has been more emphasis on people's ordinary, development and utilization of solar energy while reducing environmental pollution, high energy can effectively save the other hand, it has broad application prospects.Tn this paper, based on the existing solar heat pump system and gas heat pump system propose a new heating system, named solar and gas heat pump heating system.This paper designs the heating system and the complementary external network diagram, and its various sub-heating system, Research the operating mode of the whole system detailed. This paper comparesthe system with other existing heating system and analysis them from two aspects of energy consumption and economic.Use TRNSYS, Dest and MATLAB simulation software as toolsto study solar and gas heat pump system in the entire period.And to study the heating system in our country under the conditions of cold regions applicability to actual engineering design to provide a reference.Solar gas heat pump system is based on solar energy as heat pump system evaporator side driven by gas engine.That is as low-grade solar energy, use gas engine compressor complete heat pump cycle.This can not only recovery system waste heatimprove the COP of the entire system and primary energy ratio PER, but also can ease the strain on the grid with natural gas as an energy source, while natural gas as a clean energy source can reduce environmental pollution. In operation, due to the cost of gas is lower than electricity, so we can save operating costs. Therefore, the solar gas heat pump has great energy and economic significance.This paper uses Dest and TRNSYS to build models, analyzes the baseline building dynamic load portion and gas heat pump and solar can afford the proportion of the total load, drawn both load ratio:GHP bear 65% of the design load, the solar part bear 35%, this provide a basis for the selection of equipment.This paper uses TRNSYS software for the simulation of solar heating systems, using MATLAB software for the simulation of gas heat pump, take the former data into the latter, as the input data of the evaporation side, so we can simulate the performance of the entire heating system. We can get the system COP can reach 4.76, primary energy efficiency PER can reach 1.96 and the condenser temperature can reach 57.8?. By comparing, we can see this system is superior to the solar heat pump system and gas heat pump system.