एक चक्रीय ऊष्मा इंजन 900°C के स्रोत तापमान और 35°C के सिंक तापमान के बीच संचालित होता है। इंजन के प्रति kW शुद्ध उत्पादन के लिए ऊष्मा अस्वीकृति की न्यूनतम दर होगी:

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BHEL Engineer Trainee Mechanical 24 Aug 2023 Official Paper
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  1. 0.392 kW
  2. 0.376 kW
  3. 0.356 kW
  4. 0.326 kW

Answer (Detailed Solution Below)

Option 3 : 0.356 kW
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संप्रत्यय:

दो तापमानों के बीच संचालित होने वाले ऊष्मा इंजन की कार्नोट दक्षता है:

जहाँ, स्रोत तापमान है और सिंक तापमान (केल्विन में) है।

दिया गया है:

स्रोत तापमान = 900°C = 1173 K

सिंक तापमान = 35°C = 308 K

शुद्ध उत्पादन कार्य = 1 kW

परिणाम:

दक्षता,

आपूर्ति की गई ऊष्मा,

अस्वीकृत ऊष्मा,

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