Cooling and recovery of heat from underground railway tunnels for district heating

Conference paper

Davies, G, Maidment, GG, Dennis, W, Ajileye, A and Grice, J (2017). Cooling and recovery of heat from underground railway tunnels for district heating. CIBSE ASHRAE Technical Symposium. Loughborough UK 05 - 06 Apr 2017
AuthorsDavies, G, Maidment, GG, Dennis, W, Ajileye, A and Grice, J
TypeConference paper
Abstract

Temperatures in London’s underground railway tunnels are rising year on year and new energy efficient, cooling solutions are needed. The MICAH (Metropolitan Integrated Cooling and Heating) project involves investigating the feasibility of combining cooling and ventilation of London’s underground tunnels with recovering and reuse of the waste heat to supply a district heating network (DHN). A suitable site from the underground network has been identified, close to a DHN, to which the heat can be transferred. The temperatures of the ventilation shaft air are quite low i.e.17-28°C, so the recovered heat needs to be upgraded e.g. to 70°C using a heat pump, before delivering it to the DHN. A model has been developed which incorporates the proposed design and operational parameters for the combined cooling and heat recovery system, together with specifications for the heat pump and the equipment needed to transfer the heat to the DHN. The model permits evaluation of the performance of the system under a wide range of design, operating and environmental conditions, and for a number of configurations, enabling the model to be used to investigate the potential for waste heat recovery at a range of sites. Preliminary results from the model are presented and the potential benefits, limitations, and the effects of key design and operating parameters are discussed.

Keywordsunderground railway tunnels,; waste heat recovery; heat pumps; district heating networks
Year2017
Accepted author manuscript
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Open
Publication dates
Print05 Apr 2017
Publication process dates
Deposited15 May 2017
Accepted28 Feb 2017
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Ground source heat pumps and their interactions with underground railway tunnels in an urban environment: A review
Revesz, A, Chaer, I, Thompson, J, Mavroulidou, M, Gunn, MJ and Maidment, GG (2015). Ground source heat pumps and their interactions with underground railway tunnels in an urban environment: A review. Applied Thermal Engineering. 93, pp. 147 - 154. https://doi.org/10.1016/j.applthermaleng.2015.09.011
Estimation of Cooling Energy Demand and Carbon Emissions from Urban Buildings using a Quasi-dynamic Model
Cowan, D, Maidment, GG and Chaer, I (2014). Estimation of Cooling Energy Demand and Carbon Emissions from Urban Buildings using a Quasi-dynamic Model. ASHRAE 2014 Winter Conference. New York city, USA 18 - 22 Jan 2014 London South Bank University.
A Carbon Footprint Study and a Life Cycle Assessment of an identical Refrigerated Display Cabinet: comparative analysis of the respective ratios of embodied and operational impacts
Bibalou, D, Andrews, D, Chaer, I, Maidment, GG and Longhurst, M (2014). A Carbon Footprint Study and a Life Cycle Assessment of an identical Refrigerated Display Cabinet: comparative analysis of the respective ratios of embodied and operational impacts. 4th International Conference on Life Cycle Approaches. Lille, France 05 - 06 Nov 2014 Forum for Sustainability Through Life Cycle Innovation.
Theoretical modelling and experimental investigation of a thermal energy storage refrigerator
Marques, C., Davies, G., Evans, JA, Maidment, GG and Wood, ID (2013). Theoretical modelling and experimental investigation of a thermal energy storage refrigerator. Energy. 55, pp. 457-465. https://doi.org/10.1016/j.energy.2013.03.091
The use of phase change materials in domestic refrigerator applications
Evans, J, Marques, C., Davies, G, Maidment, GG and Wood, ID (2013). The use of phase change materials in domestic refrigerator applications. Proceedings of the Institute of Refrigeration 2013-2014. London, UK 07 Nov 2013 Institute of Refrigeration.
Novel design and performance enhancement of domestic refrigerators with thermal storage
Marques, C., Davies, G., Maidment, GG, Evans, JA and Wood, ID (2013). Novel design and performance enhancement of domestic refrigerators with thermal storage. Applied Thermal Engineering. 63 (2), pp. 511-519. https://doi.org/10.1016/j.applthermaleng.2013.11.043
Potential life cycle carbon savings with low emissivity packaging for refrigerated food on display
Davies, G., Man, CMD, Andrews, D, Paurine, A, Hutchins, MG and Maidment, GG (2012). Potential life cycle carbon savings with low emissivity packaging for refrigerated food on display. Journal of Food Engineering. 109 (2), pp. 202-208. https://doi.org/10.1016/j.jfoodeng.2011.10.018
Description and validation of a computer based refrigeration system simulator
Eames, IW, Brown, T, Evans, JA and Maidment, GG (2012). Description and validation of a computer based refrigeration system simulator. Computers and Electronics in Agriculture. 85, pp. 53-63. https://doi.org/10.1016/j.compag.2012.03.010
Carbon dioxide refrigeration with heat recovery for supermarkets
Colombo, I, Maidment, GG, Chaer, I and Missenden, JM (2012). Carbon dioxide refrigeration with heat recovery for supermarkets. International Journal of Low-Carbon Technologies. 9 (1), pp. 38-44. https://doi.org/10.1093/ijlct/cts040
Modelling of a thermal storage refrigerator
Marques, C., Davies, G., Evans, J., Maidment, G. and Wood I. (2011). Modelling of a thermal storage refrigerator. The 23rd IIR International Congress of Refrigeration. Prague, Czech Republic 01 - 01 Aug 2011 International Institute of Refrigeration.
REAL Zero – Reducing refrigerant emissions & leakage- feedback from the IOR Project
Cowan, D, Gartshore, J, Christina, F, Chaer, I and Maidment, GG (2011). REAL Zero – Reducing refrigerant emissions & leakage- feedback from the IOR Project. Proceedings of the Institute of Refrigeration.
Novel Design and Performance of Domestic Refrigerators
Marques, C., Evans, J., Davies, G., Maidment, G. and Wood I. (2010). Novel Design and Performance of Domestic Refrigerators. 1st IIR International Cold Chain Conference. UK, Cambridge 29 - 31 Mar 2010 International Institute of Refrigeration.
Application of Phase Change Materials to Domestic Refrigerators
Marques, C., Davies, G., Maidment, G., Evans, J. and Wood I. (2010). Application of Phase Change Materials to Domestic Refrigerators. 9th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air-Conditioning. Sofia, Bulgaria 29 Sep 210 - 01 Oct 2010 International Institute of Refrigeration.