Experimental study of the efficiency of earth-to-air heat exchangers: Effect of the presence of external fans

Case Studies in Thermal Engineering

Nasreddine Sakhri¹  Houari Ameur²  Younes Menni³  Hijaz Ahmad⁴  Mohamed Omri⁵ 

[1]Corresponding author.

[2]Deanship of Scientific Research, King Abdulaziz University, Jeddah, Saudi Arabia

[3]Laboratory of Energy in Arid Areas (ENERGARID), University of Bechar, P.O. Box 417, 08000, Bechar, Algeria

[4]Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II, 39, 00186 Roma, Italy

[5]Unit of Research on Materials and Renewable Energies, Department of Physics, Faculty of Sciences, Abou Bekr Belkaid University, P.O. Box 119, 13000, Tlemcen, Algeria

关键词: Earth-to-air heat exchanger;    Arid environment;    Thermal comfort;    Climatic conditions;    Natural ventilation;   

DOI  :  

来源: DOAJ

【 摘 要 】

Renewable energy means a source of energy which is renewable and without or with less energy consumption as possible. In the case of the earth to air heat exchanger EAHE, we can find EAHE without fan or blower and systems with it according to prevailing winds. In the present paper, an experimental investigation of the possibilities and influences of using EAHE without a fan and directly after using a fan as a mechanism of air inducing and its impact inside a hot arid region full-scale test room. Temperature and relative humidity inside a test room made of poly-wood are measured. Results show that temperature inside the test room connected to EAHE without and with external fan reduced by 10 and 14 °C, respectively. For relative humidity, it doesn’t exceed 20 to 30 % for both systems, respectively. Obtained results confirmed that fan use allowed EAHE to better thermal performance, but hygrometry must be controlled. The use of EAHE with an external fan could improve thermal comfort inside hot arid region buildings and dwellings.

【 授权许可】

Unknown