5. consider a 200 kw fuel cell combined heat and power (chp) plant that is fueled with natural gas that has a lower heating value of 48.3 mj/kg. based on the lower heating value of the fuel, the power plant has a heat rate of 9000 btu/kwhe. the heat rate accounts only the production of electricity from the fuel cell and not the delivery of heat. the capacity factor of the plant is 60%. the fuel cell is a combined heat and power (chp) plant which produces 300,000 btu/h of heat energy at the rated power of 200 kw. what is the lower heating value combined heat and power efficiency of the plant (%)?