Evaluation of thermal comfort room garment workshop in textile vocational school

Vocational school is an education provider where students can learn and operate machines. Students in the room feel uncomfortable because of heat from machines and equipment. In addition to heat from machines, inadequate room capacity makes students less comfortable while studying. The research was conducted in the textile vocational school garment workshop room which measured in afternoon. The focus in this paper is to evaluate thermal comfort based on student perceptions, temperature measurements, and humidity. Based on the initial data collection results, obtained room temperature more than 30°C. The results obtained can be seen that the room does not meet the thermal comfort standards set by SNI so that it needs to be improved in order to minimize the heat pressure on the user of the classroom. In addition, the results obtained measurements of the level of user dissatisfaction is large enough in the user class. Thermal perception data collection obtained a mean value of a total of 0.45 in first day and 0.3 in second day, which means that the conditions felt by students tend to warm. The students as the room user want a more comfortable condition from the current condition. Improvements are made by using a cooling load derived from the air conditioner because the airflow rate required to discharge heat from inside to outside the room is too high and has exceeded the specified standard.