Coupled hydro-thermal analysis of underground coal gasification rector cool down for subsequent CO2 storage

Sarhosis, Vasilis, Yang, D., Sheng, Y. and Kempka, T. 2013. Coupled hydro-thermal analysis of underground coal gasification rector cool down for subsequent CO2 storage. Energy Procedia 40 , pp. 428-436. 10.1016/j.egypro.2013.08.049

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Abstract

The present study investigates the time dependency of a UCG (Underground Coal Gasification) reactor cool down process by comparing natural cool down with forced cooling driven by water flushing. The convective heat transport out of the UCG reactor was calculated using an analytical approach coupled to a numerical heat flow model of the geology surrounding the UCG reactor. Our results show that forced cooling by water flushing at flow velocities of 1 m/s can decrease the required time to retain initial in-situ temperature conditions by a factor of more than 300.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords:	Underground coal gasification; reactor cool down; numerical simulations; CO2 storage
Publisher:	Elsevier
ISSN:	1876-6102
Date of First Compliant Deposit:	30 March 2016
Last Modified:	23 May 2023 14:40
URI:	https://orca.cardiff.ac.uk/id/eprint/56784

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