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Experimental and computational study for improving refrigeration vapor compression cycle performance by using refrigerant mixtures

دراسة تجريبية و حسابية لتحسين عامل أداء دارة تبريد انضغاطية باستخدام مزائج من وسائط التبريد

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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The aim of this study is investigate in using refrigerants mixtures as substitute to R134a in a testing compression refrigeration cycle designed to work with a mass of 100g of R134a without make changing or modification in the cycle. The new mixture that made it is ozone-friendly, safe for using and consists of R134a, propane R290, butane R600, we use three various types of this mixture and the coefficient of performance (COP) and other properties was compared with R134a on the same conditions and on different evaporation temperature. The results shows the refrigerant mixture (M40) has higher coefficient of performance (COP) than that of R134a by about 7.77% and increasing the refrigeration effect about 30% and decreasing the discharge temperature from compressor 3.2% compared with R134a. This study support possibility of using refrigerant mixtures in refrigeration cycle that designed to work with pure refrigerant (single component) without making any change in the cycle also it support the possibility of using refrigerant that have an excellent thermodynamic properties and environmentally friendly like Propane and butane but there are some warning from using it because their flaming.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى تحسين أداء دارة تبريد انضغاطية باستخدام مزائج من وسائط التبريد كبديل لوسيط التبريد R134a. تم استخدام مزيج من R134a، البروبان (R290)، والبوتان (R600) في ثلاث نسب مختلفة. أظهرت النتائج أن المزيج M40 يزيد من معامل الأداء (COP) بنسبة 7.77% ويزيد من التأثير التبريدي بنسبة 30% مقارنةً بـ R134a. كما أظهر المزيج انخفاضًا في درجة حرارة التصريف من الضاغط بنسبة 3.2%. تدعم الدراسة إمكانية استخدام هذه المزائج في دارات التبريد دون الحاجة إلى تعديل في التصميم، مع التحذير من قابلية الاشتعال للبروبان والبوتان.
Critical review
دراسة نقدية: تقدم هذه الدراسة مساهمة قيمة في مجال تحسين أداء دارات التبريد باستخدام مزائج من وسائط التبريد. ومع ذلك، هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم تناول تكاليف الإنتاج والتشغيل للمزائج الجديدة مقارنة بـ R134a بشكل كافٍ. ثانيًا، لم يتم اختبار المزائج في ظروف تشغيل مختلفة مثل درجات حرارة محيطة مرتفعة أو منخفضة، مما قد يؤثر على الأداء الفعلي في التطبيقات العملية. أخيرًا، يجب أن تكون هناك دراسة أوسع حول الأمان وقابلية الاشتعال لهذه المزائج في بيئات مختلفة لضمان سلامة الاستخدام.
Questions related to the research
  1. ما هو الهدف الرئيسي من هذه الدراسة؟

    الهدف الرئيسي هو تحسين أداء دارة تبريد انضغاطية باستخدام مزائج من وسائط التبريد كبديل لوسيط التبريد R134a.

  2. ما هي النسبة التي أظهر فيها المزيج M40 زيادة في معامل الأداء (COP)؟

    أظهر المزيج M40 زيادة في معامل الأداء (COP) بنسبة 7.77%.

  3. ما هي التحذيرات المتعلقة باستخدام البروبان والبوتان في المزائج؟

    التحذيرات تتعلق بقابلية الاشتعال للبروبان والبوتان، مما يتطلب اتخاذ احتياطات أمان إضافية.

  4. هل تحتاج دارات التبريد إلى تعديل لاستخدام المزائج الجديدة؟

    لا، يمكن استخدام المزائج الجديدة في دارات التبريد المصممة للعمل مع وسائط تبريد أحادية بدون الحاجة إلى تعديل.


References used
JUNG, D. S.; RADERMACHER, R. Performance simulation of single evaporator domestic refrigeration charged with pure and mixed refrigerants. International Journal of Refrigeration, Vol.14, 1991, 223-232
CAMPORESE, R.; BIGOLARO, G.; BOBBO, S. Experimental evaluation of refrigerant mixtures as substitutes for CFC12 and R502. International Journal of Refrigeration, Vol.20, 1997, 22-31
MUIR, E. B. Commercial refrigerants and CFCs. International Journal of Refrigeration, Vol.13, 1990, 106-112
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