Thermal Comfort in an Office Room Using Square Diffuser

Abstract

The office is an important part of our daily life, people spend most of their time doing works inside of the office and therefore the quality of the indoor environment is a significant factor affecting the productivity and happiness of office users. Many factors ınfluence the pattern of airflow: indoor air quality, thermal comfort and energy saving in an office room. In this study, the effects of the square diffusers on thermal comfort investigated numerically for an office room. Numerical research was subsequently carried out using the validated CFD model. This model solved the continuity, energy conservation and momentum equations in addition to k–ε model equation for turbulence modelling. Predicted Percentage of Dissatisfied (PPD) is a frequently used tool for assessing human comfort rating. A PPD based control HVAC (Heating, Ventilating and Air Conditioning) system has the potential to provide enhanced thermal comfort inside a location by taking into consideration all main thermal comfort variables. The CFD results revealed that thermal conditions occurred according to ASHRAE standards in the model office room with a square diffuser.

Keywords

• Hvac
• CFD
• Diffuser
• PMV
• PPD
• Thermal comfort

References

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