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Low-cost retrofit packages for residential buildings in hot-humid Lagos, Nigeria

Nwakaego Chikaodinaka Onyenokporo (Department of Architecture, De Montfort University, Leicester, UK)
Ekele Thompson Ochedi (Department of Architecture, De Montfort University, Leicester, UK)

International Journal of Building Pathology and Adaptation

ISSN: 2398-4708

Article publication date: 29 August 2018

Issue publication date: 20 June 2019

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Abstract

Purpose

The purpose of this paper is to develop a set of affordable retrofit packages that can be applied to existing residential buildings in hot-humid regions to improve occupants’ thermal comfort and reduce energy consumption.

Design/methodology/approach

A critical review of relevant literature to identify passive design strategies for improving thermal comfort and reducing energy consumption in hot-humid climates with focus on the building envelope was conducted in addition to a simulation study of an existing building typology in study area.

Findings

There is enormous potential to reduce energy costs and improve thermal comfort through building retrofit packages which is a recent concept in developing countries, such as Nigeria. Analysing the results of the retrofit interventions using building energy simulation helped in developing affordable retrofit packages which had optimum effect in improving indoor comfort temperature to the neutral temperature specified for hot humid Nigeria and further down to 3°C less than that of the reference building used. The use of passive design strategies to retrofit the building might help homeowners reduce their annual energy consumption by up to 46.3 per cent just by improving the indoor thermal comfort.

Originality/value

In addition to improving thermal comfort and reducing energy consumption, this research identified affordable retrofit packages and considered its cost implications especially to low-income earners who form a larger population of Lagos, Nigeria, as this was not considered by many previous researchers.

Keywords

Acknowledgements

This research received no funding from any source. The authors would like to thank the anonymous reviewers for their expert comments and recommendations which helped to improve the quality of this paper immensely. We would also like to thank the editors of this journal for their support throughout the review process.

Citation

Onyenokporo, N.C. and Ochedi, E.T. (2019), "Low-cost retrofit packages for residential buildings in hot-humid Lagos, Nigeria", International Journal of Building Pathology and Adaptation, Vol. 37 No. 3, pp. 250-272. https://doi.org/10.1108/IJBPA-01-2018-0010

Publisher

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Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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