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Ultraviolet Usage Efficiency of in Supporting Particulate Filters to Disinfect Re-Circulated Air in Both ICU And O.R Rooms

فعالية استخدام الأشعة فوق البنفسجية في دعم الفلاتر الجزيئية لتطهير الهواء المعاد تدويره في كل من غرف العمليات و العناية المشددة

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 Publication date 2012
and research's language is العربية
 Created by Shamra Editor




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This study discusses in-duct UVGI efficiency to disinfect O.R and ICU supplied air. Experiment setup was designed using three ultraviolet lamps were placed at the upper side of experimental duct, equipped with variable speed turbine to simulate flow rates of ICU and O.R. In order to determine organism irradiance time, UV intensity distribution is measured at different levels in duct, Thenthese parameters combined in simulation program executed under LABVIEW programming environment to determine in-duct disinfection efficiency in relation to ICU and O.R designing requirement and sterility level.


Artificial intelligence review:
Research summary
تبحث هذه الدراسة في فعالية استخدام الأشعة فوق البنفسجية في تطهير الهواء المعاد تدويره في غرف العمليات والعناية المشددة. تم تصميم منصة تجريبية تضمنت ثلاثة مصابيح أشعة فوق بنفسجية مثبتة في مجرى تهوية مزود بمروحة لضبط معدلات تدفق الهواء. تم قياس كثافة الأشعة عند عدة مستويات وربطها ببرنامج حاسوبي باستخدام بيئة LABVIEW لتحديد فعالية تطهير الهواء. أكدت النتائج إمكانية استخدام تقنية التشعيع فوق البنفسجي كوسيلة فعالة لتطهير الهواء في غرف العناية المشددة بنسبة تصل إلى 99% عند استخدام مصابيح ذات خرج إشعاعي عالي، بينما في غرف العمليات، تعمل التقنية على دعم المرشحات الجزيئية عالية الفعالية وتخفيف العبء عنها، مما يزيد من عمرها ويتيح إعادة استخدام الهواء المطرود في أقسام أخرى من المشفى، مما يوفر الطاقة والتكاليف.
Critical review
دراسة نقدية: تعتبر الدراسة خطوة مهمة نحو تحسين جودة الهواء في المرافق الصحية، إلا أنها تفتقر إلى بعض الجوانب التي يمكن تحسينها. على سبيل المثال، لم تتناول الدراسة تأثير العوامل البيئية المختلفة مثل الرطوبة ودرجة الحرارة بشكل كافٍ. كما أن الدراسة اعتمدت بشكل كبير على النماذج الحاسوبية دون إجراء تجارب ميدانية كافية للتحقق من النتائج. بالإضافة إلى ذلك، يمكن تحسين تصميم التجربة لتشمل أنواعًا مختلفة من الكائنات المجهرية لضمان شمولية النتائج. من المهم أيضًا النظر في التكلفة الاقتصادية لتطبيق هذه التقنية على نطاق واسع في المرافق الصحية المختلفة.
Questions related to the research
  1. ما هي الفعالية المتوقعة لاستخدام الأشعة فوق البنفسجية في غرف العناية المشددة؟

    يمكن أن تصل فعالية استخدام الأشعة فوق البنفسجية في غرف العناية المشددة إلى 99% عند استخدام مصابيح ذات خرج إشعاعي عالي.

  2. كيف يمكن استخدام الأشعة فوق البنفسجية في غرف العمليات؟

    في غرف العمليات، تعمل تقنية الأشعة فوق البنفسجية على دعم المرشحات الجزيئية عالية الفعالية وتخفيف العبء عنها، مما يزيد من عمرها ويتيح إعادة استخدام الهواء المطرود في أقسام أخرى من المشفى.

  3. ما هي العوامل التي تؤثر على فعالية تطهير الهواء باستخدام الأشعة فوق البنفسجية؟

    تتأثر فعالية تطهير الهواء باستخدام الأشعة فوق البنفسجية بعدة عوامل مثل كثافة الأشعة، زمن التعرض، حساسية الكائنات المجهرية للأشعة، ودرجة حرارة الهواء المتدفق.

  4. ما هي الفوائد الاقتصادية لاستخدام تقنية الأشعة فوق البنفسجية في تطهير الهواء؟

    تتمثل الفوائد الاقتصادية في تقليل تكاليف استبدال المرشحات الجزيئية، وإطالة عمرها، وتوفير الطاقة من خلال إعادة استخدام الهواء المطرود في تهوية أقسام أخرى من المشفى.


References used
Griffiths W.D., Bennett A., Speight S., Parks S. “Determining the performance of a commercial air purification system for reducing airborne contamination using model microorganisms: a new test methodology”,Journal of Hospital Infection, 2005, Vol. 61, P.P:242–247
Kowalski, W.J., and Bahnfleth, W.P.“Proposed Standards and Guidelines for UVGI Air Disinfection”, IUVA News, 2004, Vol.6, No.1, P.P:20-25, International Ultraviolet Association, (IUVA), Canada
Kujundzic E., Hernandez M., Miller S. “Ultraviolet germicidal irradiation inactivation of airborne fungal spores and bacteria in upper roomair and HVAC in duct configurations”, NHR research press,2006
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