Numerical modelling of multiple standing column wells for heating and cooling buildings

Ng, Bobo, Underwood, Chris and Walker, Sara (2009) Numerical modelling of multiple standing column wells for heating and cooling buildings. In: Eleventh International IBPSA Conference, 27-30 July 2009, Glasgow.

[img]
Preview
PDF (Conference paper)
BS09_0049_55.pdf - Published Version

Download (243kB) | Preview

Abstract

A model for simulating clusters of standing column wells (SCWs) for use in geothermal heating and cooling systems is described in this paper. The model is three-dimensional, dynamic and solves the governing equations using a finite volume discretisation scheme with a fully implicit algorithm. The slower-acting field equations are solved using a wider time interval than that used for the faster-acting well equations and the two sets of equations are coupled through the field equation source terms. A groundwater bleed feature is incorporated. The model is applied to two evaluative test cases the first of which involves heating only and the second, heating and cooling. Results of the applications suggest that SCWs can deliver substantially higher rates of heat transfer than conventional closed loop borehole heat exchanger arrays especially when groundwater bleed is operational. An important practical consequence of this is that far less geotechnical drilling is needed when using SCWs than is the case with closed loop arrays.

Item Type: Conference or Workshop Item (Paper)
Subjects: K200 Building
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: EPrint Services
Date Deposited: 11 Mar 2010 15:00
Last Modified: 14 May 2017 21:41
URI: http://nrl.northumbria.ac.uk/id/eprint/197

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics


Policies: NRL Policies | NRL University Deposit Policy | NRL Deposit Licence