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The role of green roofs on reducing heating and cooling loads: a database across Chinese climates

Kokogiannakis, Georgios; Tietje, Annegret; Darkwa, Jo


Georgios Kokogiannakis

Annegret Tietje

Professor of Energy Storage Technologies


This paper aims to use detailed modelling techniques and develop a database for assessing in a quick and easy way the energy performance of green roof designs across a range of Chinese climates. The focus is on heating and cooling loads by calculating indoor temperatures using the EnergyPlus simulation tool. The study covers 5328 configurations by varying model parameters such as location, climate, seasonal periods, glazing type, wall insulation levels, roof insulation, soil thickness and condition, and vegetation density characteristics. It was found from the results that green roofs can offer significant energy savings for heating and cooling loads if they are applied on roofs without insulation but only limited energy savings where heavy insulation on the roof is also applied. This database can prove to be a useful tool to the practitioners who want to perform rapid assessments of the potential energy savings that could be gained from a green roof installation in a Chinese location.


Kokogiannakis, G., Tietje, A., & Darkwa, J. (2011). The role of green roofs on reducing heating and cooling loads: a database across Chinese climates. Procedia Environmental Sciences, 11(B),

Journal Article Type Article
Online Publication Date Jan 8, 2012
Publication Date Dec 31, 2011
Deposit Date Sep 5, 2012
Publicly Available Date Sep 5, 2012
Journal Procedia Environmental Sciences
Print ISSN 1878-0296
Electronic ISSN 1878-0296
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 11
Issue B
Keywords Green roofs; Database; Detailed simulation; Heating/cooling loads; Chinese climate;
Public URL
Publisher URL
Additional Information NOTICE: this is the author’s version of a work that was accepted for publication in Procedia Environmental Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Procedia Environmental Sciences, 11 (2011), doi: 10.1016/j.proenv.2011.12.094


SubmittedGreenRoofDatabasePaper5_SZ_v4.pdf (253 Kb)

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