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Integrated model of horizontal earth pipe cooling system for a hot humid climate

Energy efficiency of a building has become a major requirement since the building sector produces 40%-50% of the global greenhouse gas emissions. This can be achieved by improving building’s performance through energy savings, by adopting energy efficient technologies and reducing CO2 emissions. There exist several technologies with less or no environmental impact that can be used to reduce energy consumption of the buildings. Earth pipecooling system is one of them, which works with a long buried pipe with one end for intake air and the other end for providing air cooled by soil to the building. It is an approach for cooling a room in a passive process without usingany habitual mechanical unit. The paper investigates the thermal performance of a horizontal earth pipe coolingsystem in a hot and humid subtropical climatic zone in Queensland, Australia. An integrated numerical model for the horizontal earth pipe cooling system and the room (or building) was developed using ANSYS Fluent to measure the thermal performance of the system. The impact of air temperature, soil temperature, air velocity and relative humidity on room cooling performance has also been assessed. As the soil temperature was below the outdoor minimum temperature during the peak warming hours of the day, it worked as an effective heat sink to cool the room. Both experimental and numerical results showed a temperature reduction of 1.11ºC in the room utilizing horizontal earth pipe cooling system which will assist to save the energy cost in the buildings.

History

Start Page

911

End Page

929

Number of Pages

19

Start Date

2015-04-27

Finish Date

2015-04-30

eISSN

1865-3537

ISSN

1865-3529

ISBN-13

9783319625713

Location

Valenciennes, France

Publisher

Springer

Place of Publication

Cham, Switzerland

Peer Reviewed

  • Yes

Open Access

  • No

External Author Affiliations

Institute for Resource Industries and Sustainability (IRIS); School of Engineering and Technology (2013- ); School of Engineering;

Era Eligible

  • No

Name of Conference

7th International Exergy, Energy and Environmental Symposium (IEEES7-2015)