Experimental studies on a CCHP system based on a micro-turbine

Nowadays, the diversity of terminal energy demand makes the distributed energy system (DES) characterized by energy stepwise usage become a highly potential energy-saving method. DES systems are fully developed in foreign countries but just in primary stage in China. This paper reveals some experimental results of a combined cooling, heating and power (CCHP) system, which mainly consists of a 100 kW micro turbine and an absorption chiller. The results of testing in winter showed that the electrical efficiency varied from 20%~29% and the total efficiency was from 65%~80% while power output changed from 40 kW to HOkW; the data in summer indicated that the electrical efficiency varied from 18%~26% and the total efficiency was from 60%~65% while power output ranged from 35 kW to 75 kW. Also, the transient pollutant emissions were studied and the experimental results showed that pollutant emissions of micro-turbine startup had significant impacts on total pollutant emissions, especially for CO.