Question
Download Solution PDF250°C तापमान पर रखे 50 cm × 75 cmआकार के हॉट प्लेट के ऊपर से 20°C की वायु प्रवाहित होती है। संवहन ऊष्मा अंतरण गुणांक 25\(\rm {W \over m^2}\)°C है। ऊष्मा अंतरण दर ________ है।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
न्यूटन के शीतलन नियम के अनुसार,
Q = h A dT
जहाँ, Q = ऊष्मा स्थानांतरण, h = संवहनी ऊष्मा स्थानांतरण गुणांक, A = पृष्ठीय क्षेत्रफल, dT = तापमान प्रवणता।
गणना:
दिया गया है:
T∞ = 20°C, प्लेट का क्षेत्रफल = 50 × 75 cm2, Ts = 250°C, h = 25 W/m2°C
Q = 25 × 50 × 75 × 10-4 × (250 – 20)
Q = 2156.25 W = 2.156 kW.Last updated on May 30, 2025
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