Unformatted text preview: coeﬃcient is given by U a pp = WC p A Δ T ( dT dt ) where W = weight of water, lb A = area of kettle in contact with water through which heat transfer takes place, ft 2 C p = speciﬁc heat capacity of water, BTU/(lb)( F) Δ T = temperature diﬀerence between the steam and water, F dT dt = slope at any instant of the curve of water temperature verses time. Assume that all variables except speciﬁc heat are random variables. Find the mean value of U a pp and its precision at the given condition. The measurements and estimated variance of each variable is given as W ∼ N (1200 , . 08) A ∼ N (8 . 74 , . 0225) Δ T ∼ N (60 , . 26) dT dt ∼ N (3 , . 048) 1...
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 Spring '08
 Dunia
 Variance, Heat, Probability theory, dt dt, Cp dT Uapp, verses time. dt

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