Occupants' Perception Towards Thermal Sensation In Engineering Laboratory

• Main Author: Gulam Mahfuze, Nur Adibah
• Format: Thesis
• Language: English; English
• Published: 2019
• Subjects: T Technology (General); TH Building construction
• Online Access: http://eprints.utem.edu.my/id/eprint/23964/1/Occupants%27%20Perception%20Towards%20Thermal%20Sensation%20In%20Engineering%20Laboratory.pdf; http://eprints.utem.edu.my/id/eprint/23964/2/Occupants%27%20Perception%20Towards%20Thermal%20Sensation%20In%20Engineering%20Laboratory.pdf; http://eprints.utem.edu.my/id/eprint/23964/; http://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=115588

Thermal comfort can be defined as a state of mind that expresses satisfaction toward the surrounding thermal environment. European Standard ISO 7730 stated that thermal comfort is a combination of four environmental parameters such as air temperature, relative humidity, air velocity and mean radiant temperature. This study aims on measurement of thermal comfort at faculty mechanical engineering laboratory. There are two different laboratories that will be conducted in this experiment one with air conditioning (with and without occupants) whereas with no air-conditioning (with and without occupants). The procedure to determine occupant's responses toward thermal comfort in student laboratory is through observation method associated with a survey. Measurement of actual thermal comfort in student laboratory is accomplished through technical measurement associated with a thermal microclimate HD32. l. The overall average air velocity was recorded of the Fabrication Laboratory with occupant is 0.29m/s that is within the Malaysian standard but for other condition it was lower than Malaysian standard which is 0.064mls. However, for the Computer Aided Design Studio with occupant is 0.48 m/s, within the Malaysian Standard MSl 525:2014 (0.15 m/s - 0.50 m/s), while for without occupant is 0.11 m/s, less than the Malaysian Standard MS1525:2014 (0.15 m/s - 0.50 m/s). The overall average operative temperature was recorded of the Fabrication Laboratory for both condition is more than the Malaysia Standard MS1525:2014 (24 °C - 26 °C) which are 30.88 °C and 30.7 °C. Furthermore, the Computer Aided Design Studio also both condition were within the range of Malaysian Standard MS1525:2014 (24 °C - 26 °C) which is 24.4 °C and 23.3 °C.. The overall average relative humidity was recorded of the Fabrication Laboratory with occupant is 71.82 % more than the Malaysia Standard MS1525:2014 (50% - 70%), but for without occupant is 63.51 % within the range of Malaysian Standard MS1525:2014 (50% - 70%), while the Computer Aided Design Studio with occupant is 51.36 % and without occupant is 52.49 %, within the range of Malaysian Standard MS1525:2014 (50% - 70%). From the survey, occupants' are feel comfortable with both condition laboratory. For the future study, can study the effect of the solar heat gain with thermal comfort level, such as analysis in a laboratory with the variance, time and whether.