Energy metrics of earth-air heat exchanger system for hot and dry climatic conditions of India

The embodied energy for the EAHE system was evaluated as 1663.88 kW h. The maximum heating potential and cooling potential of EAHE obtained in the months of January and May, respectively, were calculated as 191.06 kW h and 247.25 kW h. The total yearly energy output of EAHE system for air flow velocity of 5 m/s was found as 1290.53 kW h. The EPBT of EAHE system was calculated as 1.29 years. The SEER for typical summer and winter months were calculated as 1.34 and 1.10, respectively. The CO2 emission mitigation potential and the total carbon credits earned from EAHE system were calculated as 101.30 tonnes and Rs 1, 72,817.80 ($2837.60), respectively by considering its life span as 50 years.