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One of the problems in operating earth air tunnel heat exchangers (EATHE) for cooling in summer, with soil having high specific heat and low moisture content is accumulation of heat around the pipe. The low rate of heat dissipation due to conduction restricts the performance of EATHE over subsequent years. In the present paper, numerical simulations have been performed to investigate the thermal performance...
One of the problems in operating earth air tunnel heat exchangers (EATHE) is the collection/rejection of heat from buried pipe to nearby sub-soil which alters the soil temperature, and, in turn, adversely affects the performance of EATHE system with time. This problem is more pronounced with the soil having poor thermal conductivity and little variation in moisture content. Extent thermal saturation...
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