Reference no: EM131285919

A GDHS provides heat from the harvested thermal energy that is available at 80°C and a flow rate of 200 kg/s. At the central station, the heat exchanger that recirculates the water through the geothermal loop is placed while the reinjected water temperature is 50°C. The power consumption to run the pumps is 150 kW. The heat exchanger loses 1% of thermal energy through insulation. In the distribution network, hot water is circulated at a rate of 80 kg/s with the associated electricity consumption of 35 kW and has the maximum temperature of 70°C. The hot fluid reaches the user's location with 65°C temperature and leaves it with 55°C. An amount of 7% of the delivered heat at the user's location is lost due to imperfect insulation. Calculate the energy and exergy efficiency of the system and its components.