Analysing carbon impacts of green roof at Hilton Watford: life-cycle assessment approach-Reference-Cited by-同舟云学术

Analysing carbon impacts of green roof at Hilton Watford: life-cycle assessment approach

Published:2024-04-12 Issue: Volume: Page:1-13
ISSN:1747-6526
Container-title:Proceedings of the Institution of Civil Engineers - Waste and Resource Management
language:en
Short-container-title:Proceedings of the Institution of Civil Engineers - Waste and Resource Management

Author:

Keyhani Maryam¹^ORCID,Bahadori-Jahromi Ali²,Godfrey Paulina³,Keihani Reza⁴,Amirkhani Shiva⁵

Affiliation:

1. PhD candidate, Department of Civil Engineering and Built Environment, School of Computing and Engineering, University of West London, London, UK (corresponding author: )

2. Professor of Civil Engineering (head of research group), Department of Civil Engineering and Built Environment, School of Computing and Engineering, University of West London, London, UK

3. Sr Director Energy & Environment EMEA at Hilton, Watford, Hertfordshire, UK

4. Lecturer and Module Leader in Civil Engineering, Department of Civil Engineering and Built Environment, School of Computing and Engineering, University of West London, London, UK

5. Senior Consultant at WSP, Sustainability and Climate Change, WSP, London, UK

Abstract

This paper investigates the environmental aspects and energy impacts of implementing a green roof system at the Hilton Watford hotel, utilising building information modelling software (Revit) for three-dimensional modelling and Insight for energy simulation. Following EN 15804:2012+A2:2019, the study employs life-cycle assessment methodology, focusing on embodied and operational carbon. Environmental Product Declarations, Inventory of Carbon and Energy database and the Royal Institution of Chartered Surveyors guideline inform embodied carbon calculations. The results show the green roof system releases 263 839.56 kgCO2e as embodied carbon, while its sedum layer sequesters 211 468.12 kgCO2e over a 50 year lifespan. Energy efficiency analysis indicates a 3.3 kWh/(m2/year) reduction in energy consumption, leading to a 112 130.31 kgCO2e reduction in operational carbon dioxide emissions, highlighting the environmental benefits of green roof adoption. The findings suggest a 0.35% mitigation of whole life-cycle carbon dioxide emissions, with greater impact in situations of lower insulation effectiveness, showcasing the potential of green roofs in reducing carbon dioxide emissions. Additionally, the green roof incurs a minimal financial burden, constituting only 0.51% of the overall project cost.

Publisher

Emerald

Link

https://www.icevirtuallibrary.com/doi/pdf/10.1680/jwarm.23.00037

Reference30 articles.

1. Measuring the effect of plant-community composition on carbon fixation on green roofs

2. The outdoor microclimate benefits and energy saving resulting from green roofs retrofits

3. Life cycle assessment of layers of green roofs

4. Reduction in Carbon Dioxide Emission and Energy Savings Obtained by Using a Green Roof