Study on body temperature effect towards workers that works in hot ambient by using cooling fan

Mohamad Sukairi, Mohamad Zahim (2022) Study on body temperature effect towards workers that works in hot ambient by using cooling fan. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The term global warming refers to the increase in the global average temperature. Global warming is expected to produce a 2-5 degrees Celcius increase in the Earth’s temperature by the end of the 21st century. As a result, long-term exposure to hot and humid surroundings makes workers feel uncomfortable and causes excessive sweating, affecting their performance. Personal electric cooling fans are one of the potential solutions to increase the productivity and efficiency of the workers. Previous research and innovation are studied throughout this research. The objective is to learn the effect of prolonged exposure of direct sunlight towards body temperature and develop an optimization design concept of the Fabric Duct Fan Belt. This research will be using Mini Hanging Waist Fan as the main supply and fabric duct design as the design concept. This study aimed to examine the effects of temperature body with and without Fabric Duct Fan Belt using an electric cooling fan as the main supply. Subjects aged 24 underwent six 20 minutes experiments with body temperature recorded every 30 seconds. The investigation is conducted with an ambient temperature of 37 ºC, 60% relative humidity, 0.3m/s air velocity, and 450 W/m² of solar radiation. Subjects were given a bottle of water with 350ml that could be drunk during the ongoing experiment. Ambient temperature and temperature of the front and back of the body are aiming to be measured. The analyses prove that continuous air flows circulating the body can reduce and maintain body temperature. This research used a C shape to balance the airflow throughout the body in terms of shape. Finally, the minimum number of holes for the Fabric Duct Fan Belt is 25. If less than 25 holes, the temperature will rise and does not in the control condition.

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