Effect of energy storagecapacity ratio on multi-heat source energy supply system
The diverse energy mix system combining gas boiler,heat pump and energy storage plays an important role in the field of renewable energy heating.However,compared with the conventional energy supply system,the multi-heat source energy supply system has some drawbacks like high initial investment,complex system structure,and resources instability.A simple method based on WPS office platform for optimization and performance analysis of multi-heat source energy supply system is proposed.Taking a multi-heat source energy supply project as an example,the system configuration and strategy are optimized.The technical economy,pollutant emission and index of various energy supply schemes are calculated.The results indicatethat energy storage is beneficial to reduce the installed capacity of heat pump and reduce the peak price electricity consumption.By way of investment subsidies,combined heating and cooling,system configuration and operation strategy optimization,the comprehensive performance of multi-heat source energy supply system can be further improved,and its internal rate of return is comparable to that of the gas boiler heating system.According to the comprehensive evaluation index and the single index such as internal rate of return,energy supply cost,CO2 emission and heating efficiency,the appropriate energy storage installed capacity accounts for 17.6%～20%.
multi-heat source energy supply systemenergy storage installed capacitystrategy optimizationcomprehensive evaluation index
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