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Title: Evaluation on Thermal Behavior of a Green Roof Retrofit System Installed on Experimental Building in Composite Climate of Roorkee, India
Authors: Kumar A.
Deoliya R.
Chani, Prabhjot Singh
Published in: Journal of The Institution of Engineers (India): Series A
Abstract: Green roofs not only provide cooling by shading, but also by transpiration of water through the stomata. However, the evidence for green roofs providing significant air cooling remains limited. No literature investigates the thermal performance of prefab brick panel roofing technology with green roof. Hence, the aim of this research is to investigate the thermal behavior of an experimental room, built at CSIR-Central Building Research Institute (CBRI) campus, Roorkee, India using such roofing technology during May 2013. The study also explores the feasibility of green roof with grass carpets that require minimum irrigation, to assess the expected indoor thermal comfort improvements by doing real-time experimental studies. The results show that the proposed green roof system is suitable for reducing the energy demand for space cooling during hot summer, without worsening the winter energy performance. The cost of proposed retrofit system is about Rs. 1075 per m2. Therefore, green roofs can be used efficiently in retrofitting existing buildings in India to improve the micro-climate on building roofs and roof insulation, where the additional load carrying capacity of buildings is about 100–130 kg/m2. © 2015, The Institution of Engineers (India).
Citation: Journal of The Institution of Engineers (India): Series A(2015), 96(4): 277-284
Issue Date: 2015
Publisher: Springer India
Keywords: Existing buildings
Green roofs
Prefab brick panel
Thermal behavior
ISSN: 22502149
Author Scopus IDs: 36077892400
Author Affiliations: Kumar, A., CSIR- Central Building Research Institute, Roorkee, India
Deoliya, R., CSIR- Central Building Research Institute, Roorkee, India
Chani, P.S., Department of Architecture and Planning, Indian Institute of Technology, Roorkee, India
Funding Details: Acknowledgments The study performed in this article is a part of research project funded by Council of Scientific and Industrial Research (CSIR). The authors wish to thank CSIR-Central Building Research Institute, Roorkee, India for their valuable guidance.
Corresponding Author: Kumar, A.; CSIR- Central Building Research InstituteIndia; email:
Appears in Collections:Journal Publications [AR]

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