Kamaruddin, Amirul Faiz and Zahaba, Maryam and Tamsi, Nur Sarah Fatihah and Anua, Mohd Khusainy and Hassan, Noor Artika and Nordin, Nur Sazwi and Ariffin, Arman (2024) A comparative study on indoor air quality (IAQ) between centralised and split unit air conditioning systems in a naval ship. Defence S and T Technical Bulletin, 17 (1). pp. 28-36. ISSN 1985-6571 E-ISSN 3009-1896
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Abstract
This study determines the compliance of indoor air quality (IAQ) in areas served by different heating ventilation and air conditioning (HVAC) systems in a naval ship, namely centralised and split unit air conditioning systems. A total of nine IAQ parameters, which include physical parameters (temperature, relative humidity (RH) and air movement (AM)), chemical parameters (formaldehyde (CH2O), particulate matters (PM10), total volatile organic compounds (TVOC) and carbon dioxide (CO2)) and biological parameters (total bacterial count (TBC) and total fungal count (TFC) were assessed using calibrated handheld IAQ devices at ten different areas in the ship. The results show that the percentage of compliance is higher in areas served by centralised air conditioning systems as compared to split unit air conditioning systems. The Mann-Whitney test (p-value < 0.05) shows significant difference between the centralised and split unit air conditioning areas for all the IAQ parameters except for temperature. These findings indicate that centralised air conditioning systems, which can introduce fresh air into their served areas contribute to the decrease of concentration of chemical and biological parameters, provided that the units are well maintained.
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 9218/111618 |
| Uncontrolled Keywords: | Indoor air quality (IAQ), naval ship, centralised and split unit air conditioning, indoor air sampling, Mann-Whitney test |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Allied Health Sciences Kulliyyah of Allied Health Sciences > Department of Biomedical Science (Effective:1st July 2011) Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Medicine Kulliyyah of Medicine > Department of Community Medicine (Effective: 1st January 2011) Kulliyyah of Science Kulliyyah of Science > Department of Chemistry |
| Depositing User: | Dr Noor Artika Hassan |
| Date Deposited: | 27 Mar 2024 13:08 |
| Last Modified: | 27 Mar 2024 13:08 |
| URI: | http://irep.iium.edu.my/id/eprint/111618 |
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