Abstract

Previous studies have shown that indoor environmental quality (IEQ) parameters may have a considerable effect on office employees’ comfort, health and performance. Therefore, we initiated a research program to help occupants identify IEQ parameters they perceive as risk factors for their health in an office and enhance their comfort levels in an office environment. Since we assumed that office employees might have different indoor environmental quality expectations related to their work area and that these differences could be measured, our objective was to develop an office ‘comfort map’ based on occupants’ individual IEQ preferences. Thus, the goal of the comfort map would be to help tailor office spaces to their occupants’ health and comfort expectations. The comfort survey was developed to assess the comfort-related opinions of the occupants, based on IEQ parameters (visual comfort, acoustic comfort, air quality and thermal comfort) of a chosen open-plan office building. The survey also assessed the degree to which the given IEQ parameter was considered a health risk factor by occupants or caused a negative comfort sensation for them. The survey was filled in by 216 occupants. The answers were then analyzed with the help of a frequency table depicting relative frequency. The measurements of IEQ parameters took place in an open-plan office in the chosen office building (a Hungarian subsidiary’s office building belonging to an international company in Budapest). The occupants had different opinions regarding the perceived effects of the IEQ parameters on their health and comfort. Almost two-thirds of the respondents (64.8%) were dissatisfied with the adjustability of the noises and sounds IEQ parameter at their workstation. Furthermore, half of the respondents (50.1%) were dissatisfied with the adjustability of ventilation. Most of the occupants (45.8%) considered noises and sounds as the IEQ parameter that had a negative effect on their health. There were also IEQ differences between different areas of the office space. Based on these results, a comfort map was developed for the office. The comfort map contains information about the IEQ characteristics of each workstation by depicting the thermal comfort, carbon dioxide, visual comfort and acoustic comfort characteristics of a given workstation on a relative scale. Based on the thermal, air, acoustic, and lighting differences between the workstations, occupants can select their preferred workstations when a desk-sharing system works. Although still in its pilot phase, the comfort map could increase the chances for office employees to find the workstation best suited to their IEQ expectations. This could improve occupants’ overall comfort level, which could in turn enhance occupants’ productivity and mental as well as physical health.

Highlights

  • Personal comfort-related issues deserve special attention in office workplaces

  • Over the last two decades, research has increasingly shown that—in addition to the physical environment of office spaces—indoor environmental quality (IEQ) parameters such as visual comfort, acoustic comfort, air quality and thermal comfort have a considerable effect on the comfort, health and productivity of employees [3]

  • The first phase served as a sampling phase, in which a comprehensive investigation focusing on the IEQ parameters of the whole office level was carried out

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Summary

Introduction

Personal comfort-related issues deserve special attention in office workplaces. Office workers spend at least 40 h a week in their workplace and spend 90% of this time indoors [1].properties of office spaces such as interior design, size of personal workspace, workstation equipment and furniture ergonomics all determine how comfortable employees feel in the office [2]. Personal comfort-related issues deserve special attention in office workplaces. Office workers spend at least 40 h a week in their workplace and spend 90% of this time indoors [1]. Over the last two decades, research has increasingly shown that—in addition to the physical environment of office spaces—indoor environmental quality (IEQ) parameters such as visual comfort, acoustic comfort, air quality and thermal comfort have a considerable effect on the comfort, health and productivity of employees [3]. In this research project, we considered visual comfort (total luminous flux incident on the surface of workstations), acoustic comfort (reverberation time and sound level of the office), air quality (CO2 concentration and air velocity of workstations) and thermal comfort (air temperature, humidity, radiant temperature of workstations) as the main components of IEQ (see Section 2.5). There are many IEQ parameters, those that influence comfort levels due to differences between the physical characteristics of an office building, such as windows, air vents, surfaces and building sitting, are parameters of particular interest [4]

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