Validation of Earth Air Tunnel Heat Exchanger CFD Model To Experimental Setup
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 17, Issue 2
Abstract
The CFD based earth air tunnel heat exchanger modelling is validated by taking the observations of an actual earth air tunnel heat exchanger fabricated at Ajmer (Western India). The experimental observations was taken on March 12, 2009 and repeated on April 08, 2009 at Ajmer. The experiment flow of air is made through the material of PVC and steel pipes separately. The two horizontal cylindrical pipes of 0.15 m inner diameter with the buried length of 23.42 m made up of PVC and mild steel pipes and buried at a depth of 2.7 m in a flat land with dry soil. The two pipes viz. PVC and steel are connected to common intake and outlet manifold for air passage. The observations were taken for flow velocities 5 m/s. A study state and implicit model based on computational fluid dynamics was developed to predict the thermal performance and cooling capacity of earth air tunnel heat exchanger systems. The model was developed inside the FLUENT simulation program. The model developed is validated to experimental set-up in Ajmer (Western India). A thermal model was developed to analyze thermal energy accumulated in soil/ ground for the purpose of room cooling of buildings in the desert (hot and dry) climate of Bikaner.
Authors and Affiliations
Nasim Hasan, Dr. Yash Bansi Mathur, Mohaideen Abdul Khader
Keywords
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