การออกแบบเครื่องมือ เพื่อกำจัดการปนเปื้อนด้วยแบคทีเรีย และฟังกัส ในระบบการเตรียมส่วนประกอบโลหิต และแยกส่วนประกอบของพลาสมา / เอกชัย จิตต์รุ่งเรืองสุข = Design of equipment to eliminate bacteria and fungus contamination in the system of blood component preparation and plasma fractionation / Eakkachai Jitrungroungsuk
This thesis was to design and test an equipment to eliminate bacteria and fungus contamination in the system of blood component preparation and plasma fractionation for protecting the disinfection of products and work-in process materials. The main task was to construct a set of ultraviolet lamp-ozone generated bulbs to eliminate bacteria and fungus. The wave length of the ultraviolet light is limited to less than 200 nm. Engineering economic analysis was also conducted to compare ozone fumigation method and the existing chemical method. The results are as follows: 1. Bacteria and fungus elimination rate is higher at the beginning of the fumigation process than that at later time. 2.The appropriate fumigation time for the tested room and conditions is 4 hours. The efficiencies to eliminate bacteria and fungus are 84.7% and 83.0%, respectively. 3. Engineering economic analysis shows a cost reduction of 5.94 times of the original procedure. Furthermore, the new method offers much easier and more convenient process.
