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In assumption for using fins, the heat flow and temperature distribution throughout the fins is _______ time.

In assumption for using fins, the heat flow and temperature distribution throughout the fins is _______ time. Correct Answer Independent of

When we are required to use fins, for steady state operation and calculations to be correct we assume that the heat flow and temperature distribution is independent of time, that is it should not change with time else the equations derived would be invalid.

Related Questions

Consider the following statements pertaining to heat transfer through fins (i) They must be arranged at right angles to the direction of flow of working fluid (ii) The temperature along the fin is variable and accordingly heat transfer rate varies along the fin elements (iii) Fins are equally effective irrespective whether they are on the hot side or cold side of the fluid (iv) Fins are made of materials that have thermal conductivity higher than that of wall Identify the correct statements
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow and k = Thermal conductivity of the body)
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A statement is followed by two assumptions numbered I and II. Considered the statement and the following assumption and decide which of the assumption and decide which of the assumption is implicit in the given statements? Statement : Lalita has a large collection of books and she keeps on purchasing new books to add to her collection. Assumption : I - Lalita has read each and every book that she has purchased. II - Lalita has love and passion for books.
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An air cooled cylindrical wall is to be fitted with triangular fins of 3 cm thickness at base and 12 cm in height. The fins are made from stainless steel with density 8000 kg/m3 and thermal conductivity 17.5 W/m K. The wall temperature is 600 degree Celsius and the fin is exposed to an environment with t a = 30 degree Celsius and h = 20 W/m2 K. What is the temperature distribution along the fin? . b) t = 20 + 250 I 0 . c) t = 30 + 250 I 0 . d) t = 40 + 250 I 0 .
In a question below is given a statement. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: "Policies and programmes and seminars cannot change the women's status. There is a greater need for attitudinal change in the society towards working women." — View of Mr. X. Assumption: I. It is possible to make change in the attitude of the society towards working women. II. Status of the working women is not satisfactory. 
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