Economic analysis on gas-fired building cooling heating and power systems

Summarizes the price variations of natural gas and electricity used to residence, commerce and industry in a decade and performs the economic analysis based on actual energy prices. Taking 26 000 hours as running time and economic benefit per unit power generation as an index, establishes the calculation models of gas internal combustion engine system and small gas turbine system, and quantitatively analyses the economic status of residential, commercial and industrial buildings with building CCHP systems respectively. The results indicate that the building CCHP system has no economic benefit under the existing price system, and that the economic benefit is getting worse with the rising of gas price, and that the current energy price mechanism is not conductive to the development of building CCHP, which is the cause of economic predicament. Considers that the economic predicament of building CCHP is partial and temporary, and the effective way to solve the problem is to change the spontaneous electrical energy utilization pattern of building CCHP systems.