Journal Article


Investigating the relationship between indoor environment and workplace productivity in naturally and mechanically-ventilated office environments

Abstract

This paper uses a case study-based approach to empirically investigate the relationship between indoor environment and workplace productivity in two contrasting office environments: one naturally-ventilated (NV), the other mechanically-ventilated (MV). Environmental parameters were continuously monitored over 19 months. Transverse and longitudinal surveys recorded occupants’ perception of their working environment and self-reported productivity, while performance tasks (numerical and proofreading) measured cognitive capability as proxy for measured productivity. Indoor temperatures and CO2 concentrations were found to be higher and more variable in the naturally-ventilated office. However, the correlation between occupant perception of their indoor environment and perceived productivity was stronger in the MV office. Occupants of the NV office were found to be more tolerant of their environment than their counterparts in the MV office. Task performance was affected by indoor environmental conditions such as indoor temperature and CO2 concentration. Interestingly in the NV office, the median scores were up to 12% higher for tests conducted at CO₂ concentrations <1400 ppm, compared to those conducted above 1400 ppm, whereas in the MV office this threshold was only 1000 ppm.

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Authors

Gupta, Rajat
Howard, Alastair
Zahiri, Sahar

Oxford Brookes departments

School of Architecture

Dates

Year of publication: 2019
Date of RADAR deposit: 2019-11-12


Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License


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