Abstract
Individual studies on solar chimney and earth air tunnel heat exchanger have been carried out by various researchers but individual systems are not fulfilling the space heating and cooling demand of buildings. So, integrated approach of solar chimney and earth air heat exchanger has been studying in this communication. Computational fluid dynamics software is used for the modelling and simulation studies. The cooling effect is produced by 5.30-6.72 kW at 40°C ambient temperature and space heating is evaluated as 10.28-14.71 kW at 5°C ambient temperature and 400-1000 W/m2 16 solar radiations. And it is sufficient heating and cooling for buildings at average solar irradiance. The SC-EATHE integrated system approach produced 18 37% higher heating and cooling effect than the EATHE alone system.
Highlights
In the solar chimney, air is heated through solar heat in a hollow cavity which associated with absorber plate and glass cover
A two Dimensional geometry of solar chimney and earth air tunnel heat exchanger (EATHE) integrated system for space cooling is developed in design modular (DM) associated with ANSYS 14.0 workbench
The static pressure contour is shown in Figure[4]; it is observed that the inlet side pressure is higher than the outlet side in EATHE and similar pattern have been followed by the solar chimney
Summary
Air is heated through solar heat in a hollow cavity which associated with absorber plate and glass cover. Shiv Lal and Subhash Chand Kaushik: CFD Simulation Studies on Integrated Approach of Solar Chimney and Earth Air. Tunnel Heat Exchanger for Building Space Conditioning exchanger for thermal comfort in Gurgaon India. Maerefat and Haghighi (2010) proposed an integrated approach of solar chimney and earth air tunnel for space cooling and ventilation. It was designed a 25 m EATHE for a specific building and two solar chimneys mounted at optimum angle on the top of modelled house. No experimental data are available in the literature for integrated approach of solar chimney and earth air tunnel heat exchanger In this communication, integrated approach of solar chimney and EATHE has been used for the study for both cooling and heating of buildings. The performance study of integrated approach is carried out through CFD simulation in present manuscript
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