The Unit Consumption Analysis Of Generalized Heating System And Its Exergy Transfer Characteristic

In this paper, the method of Unit Consumption Analysis was used on the CHP, heat pump, boiler and electric heating systems. The universal formulations about unit fuel consumption and fuel special consumption accrual in generalized heating systems were deduced. And their exergy transfer characteristics are found. The change of the fuel special consumption of any section of the generalized heating systems will be greatly enlarged in the other sections in front of it. Therefore, the thermodynamic performance of some section is more important than the other section. And it shows that the low-grade temperature heating is the most important way to save energy in CHP.