Use this URL to cite or link to this record in EThOS:
Title: Thermal mass enhancement for energy saving in UK offices
Author: Whiffen, Thomas Richard
ISNI:       0000 0004 7430 148X
Awarding Body: University of Nottingham
Current Institution: University of Nottingham
Date of Award: 2016
Availability of Full Text:
Access from EThOS:
Full text unavailable from EThOS. Restricted access.
Access from Institution:
Energy use in buildings accounts for more than a third of global energy demand, with humans seeking to create comfortable internal environments year-round. In the UK, air or water active thermal mass systems have demonstrated viability at delivering energy efficient comfort to office spaces. Whilst an attractive proposition, there are limitations to the cooling capacity and dynamic thermal response, giving rise to overheating in poorly designed buildings. The thesis work presented documents the investigation into active thermal mass enhancement to a prototype ventilated hollow core sample. Through engineering modelling (CFD, Excel VBA and IES) and laboratory (DSC, component and thermal chamber) testing two solutions were tested (an active-PCM module suitable for retrofit and embedded cool water pipes), with results conveying a 1 to 3°C temperature reduction and 0.1 to 0.2 kWh/m2/day AC savings during summer conditions. COP figures up to 10.6 were achieved through temperature set-point controlled water and air activated thermal mass. Economic analysis was conducted with positive results with the active-PCM module becoming viable for the UK’s non-domestic ‘Green Deal’ at a price point of approximately £300 per module. Following the laboratory led, and simulation supported work it was possible to conclude that active thermal mass enhancements can provide financially-viable energy-efficient, thermal-comfort for non-domestic UK properties. However the extent of the benefit depends heavily on the building thermal demands, available technology and optimised system control. Further work should be conducted to; develop additional modelling tools, underpinned by the laboratory data generated, and optimise the novel active-PCM technology, suitable for lucrative target markets.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: TH7005 Heating and ventilation. Air conditioning