Thermal Comfort Assessment of High Air Conditioning Setting Temperatures in Small Office Room with Fan Assisted Ventilation

Abstract

Thermal comfort is essential for occupant productivity, satisfaction, and health in an interior area. Achieving appropriate thermal comfort in office environments is crucial because it has a direct impact on occupant activities. This study investigates thermal comfort in small office spaces using fan-assisted ventilation at an elevated air conditioning setpoint of 27°C. Conducted at UTHM with three male occupants, measurements were taken at a single point in the room to assess air temperature, relative humidity, air velocity, and mean radiant temperature. The study examines three ventilation scenarios: Situation 1 (air conditioner only), Situation 2 (air conditioner with portable fan), and Situation 3 (portable fan only). Results show Predicted Mean Vote (PMV) values of +0.67, - 0.16, and +1.43 for Situations 1, 2, and 3 respectively, alongside Thermal Sensation Vote (TSV) ratings of 0, -1, and +0.33. These findings suggest that fan-assisted ventilation at 27°C can effectively maintain neutral to slightly warm thermal sensations, indicating energy-efficient solutions for indoor comfort in small office environments.