Energy demand in India at present is fulfilled by non-renewable sources despite the prime geographical location of some states. Geothermal energy is the renewable energy within the earth’s interior will be used for various purposes. In this paper, an attempt has been made to use the renewable source of energy for sustainable development. The thermal performance of earth to air tunnel heat exchanger for passive winter preheating and summer cooling has been evaluated. The effect of an operating parameter such as pipe/tube material, soil thermal conductivity and air velocity on the thermal performance of earth to air heat exchanger (GEAHE) to be used in Lower Himalayan Region has been analyzed. The results indicate that the exit temperature drops with an increase in underground pipe/tube length during summers and decreases during winters. However, the mean efficiency increases with increase in underground pipe/tube length. Maximum efficiency of 85.6% and 87.7% is achieved during summer and winter respectively at an air velocity of 0.5 m/s for an underground pipe of 60 m length. Also, the maximum average cooling potential is 14.81 kWh during summer for earth air tunnel heat exchanger at underground pipe length of 60 m and at a velocity of 0.5 m/s. Similarly, the maximum average heating potential is 27.7 kWh during winter for same operating parameters; which is higher as compared to summers. Thus the results indicate that earth air tunnel heat exchanger is more effective during winter in Lower Himalayan Region. The results demonstrate that geothermal energy stored in a Lower Himalayan Region of India can be a driving force for sustainable development.

尽管一些邦处于优越的地理位置，但目前印度的能源需求由不可再生资源满足。地热能是地球内部的可再生能源，可用于各种用途。本文尝试利用可再生能源实现可持续发展。评估了地气隧道换热器用于冬季被动预热和夏季冷却的热性能。分析了管道/管材、土壤热导率和空气流速等操作参数对下喜马拉雅地区使用的地气换热器 (GEAHE) 热性能的影响。结果表明，夏季出口温度随着地下管道/管道长度的增加而下降，而在冬季则降低。然而，平均效率随着地下管道/管道长度的增加而增加。对于 60 m 长的地下管道，在 0.5 m/s 的风速下，在夏季和冬季分别实现了 85.6% 和 87.7% 的最大效率。此外，地下管道长度为 60 m 和速度为 0.5 m/s 的地气隧道换热器在夏季的最大平均冷却潜力为 14.81 kWh。同样，对于相同的运行参数，冬季的最大平均加热潜力为 27.7 kWh；与夏季相比更高。因此，结果表明地气隧道换热器在下喜马拉雅地区冬季更有效。结果表明，储存在印度下喜马拉​​雅地区的地热能可以成为可持续发展的驱动力。