Mehran Rabani - Assistant professor, Department of mechanical engineering, Ardakan University, Ardakan, Yazd, Iran

This paper presents an experimental study of a new designed Trombe wall in combination with solar chimney and water spraying system in a test room under Yazd (Iran) climate. The Trombe wall area is 50% of that of the southern wall of the building that occupies less space and reduces the implementation costs. The new design of the channel has caused the absorber to receive the solar radiation from three directions. Based on the results, the optimum mass flow rate and the nozzle diameter of the water spraying system has been obtained 10l/h and 30µ, respectively. The results indicate that the water spraying system decreases indoor temperature and increases indoor relative humidity by about 8C and 17%, respectively. The results also showed that the stored energy of the Trombe wall plays important role in the air ventilation during non-sunny periods. Lastly, the water spraying system enhances thermal efficiency by approximately 30%.

Solar chimney, Trombe wall, Water spraying system