Prediction of the gas emission from porous media with the concern of energy and environment

Al Makky, Ahmed and Alaswad, Abed and Gibson, Desmond and Olabi, A.G. (2016) Prediction of the gas emission from porous media with the concern of energy and environment. Renewable and Sustainable Energy Reviews. ISSN 1364-0321

[img]
Preview
Text
Prediction of the gas emission from porous media with the concern of.pdf

Download (1MB)

Abstract

Measuring soil carbon dioxide efflux is a challenging task even when it is performed using respiration chambers. While gas samples are taken, measurement deviations become more evident according to the used chamber design especially when external disturbances occur.

This paper studies the carbon dioxide concentration profiles within the top soil layers, and investigates the controlling factors affecting the process. The considered factors are diffusion, temperature and viscosity. The efflux equation is discussed and then it is linked with the soils geotechnical parameters, while a relationship between the Reynolds number within the soil and efflux is found. Emphasis on the importance of the external geometrical design considerations is shown through studying external boundary layer effects due to the chamber outer shell shape and how it interacts with blowing winds. Chamber stability on site of deployment is also of a significant importance considering external blowing winds. Internal geometrical considerations are linked with the flow turbulence within the dynamic chambers. It is highly recommended that respiration chamber designers need to work in parallel with a multidisciplinary team in order to make a chamber design that ensures the least disturbance to occur at the location of study.

Item Type: Article
Uncontrolled Keywords: CO2 Soil porosity Permeability Dynamic chambers Global warming Renewableenergy
Subjects: H800 Chemical, Process and Energy Engineering
Divisions: Faculty of Computing, Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Advanced Design Engineering
UoA Collections > UoA15: General Engineering
Depositing User: $ Ian McDonald
Date Deposited: 21 Nov 2016 14:07
Last Modified: 30 Nov 2016 09:07
URI: http://www.open-access.bcu.ac.uk/id/eprint/3568

Actions (login required)

View Item View Item

Research

In this section...