In the geothermal power plant that produces 12000 kW of energy, the generator inlet pressure is 2.250 kpa and the temperature is 120 degrees Celsius, the generator output is 1.26 kpa and the temperature is 60 degrees Celsius. Fan inlet temperature is 0.39 bar and 60 celcuis, fan outlet is 0.37 bar pressure and 38 celcuis. This geothermal power plant is n-butane users. Mass flow rate of n-butane 953 ton/hr. How much does its energy increase when the n-butene temperature 33 celsius drop output fans? Can you explain all calculations?