एक औद्योगिक ताप पंप में ऊष्मा संयोजन और अस्वीकरण की दर क्रमशः 750 kW और 1000 kW है। यदि ऊष्मा पंप 30°C और 15°C के बीच संचालित होता है। ऊष्मा पंप के लिए COP ____ है।

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ISRO LPSC Technical Assistant Mechanical 23 Feb 2020 Official Paper
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  1. 3
  2. 4
  3. 6.5
  4. 7.5

Answer (Detailed Solution Below)

Option 2 : 4
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अवधारणा:

जैसा कि इस बात का कोई उल्लेख नहीं है कि यह कार्नोट चक्र पर कार्य करता है, इसलिए ऊष्मा पंप का COP निम्न द्वारा दिया जाता है,

\(COP = \frac{{Heat\;rejection}}{{Heat\;rejection - Heat\;addition}}\)

गणना:

दिया हुआ है कि:

Qadd = 750 kW, Qrej = 1000 kW, TH = 30°C, TL = 15°C 

∴ \(COP~=~\frac{1000}{1000-750}\)

COP = 4

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