By Thomas Lestina, Robert W. Serth
Process warmth Transfer is a reference at the layout and implementation of business warmth exchangers. It presents the history had to comprehend and grasp the industrial software program applications utilized by specialist engineers within the layout and research of warmth exchangers. This publication makes a speciality of different types of warmth exchangers most generally utilized by undefined: shell-and-tube exchangers (including condensers, reboilers and vaporizers), air-cooled warmth exchangers and double-pipe (hairpin) exchangers. It presents a considerable advent to the layout of warmth exchanger networks utilizing pinch expertise, the best process used to accomplish optimum restoration of warmth in business processes.
- Utilizes best advertisement software program. Get specialist HTRI Xchanger Suite suggestions, information and tips formerly on hand through excessive rate specialist education sessions.
- Details the advance of preliminary configuration for a warmth exchanger and the way to systematically alter it to acquire a good ultimate layout.
- Abundant case reviews and principles of thumb, in addition to copious software program examples, supply an entire library of reference designs and heuristics for readers to base their very own designs on.
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Additional info for Process Heat Transfer. Principles, Applications and Rules of Thumb
24). The analysis of an annular ﬁn is somewhat more complicated and the equation for ﬁn efﬁciency involves Bessel functions [1,2], making it inconvenient to use. 28) results from the fact that heat is transferred from both sides of the ﬁn. The total rate of heat transfer from a ﬁnned surface is the sum of the heat-transfer rates from the prime surface and from all of the ﬁns. Thus, q ¼ qprime þ qfins ¼ hAprime jTs À TN j þ hf hAfins jTs À TN j ¼h Aprime þ hf Afins ATot ! 2. 27) are widely applied for ﬁn efﬁciency calculation, they are only as accurate as the simplifying assumptions used in the above derivation.
7 K. 97 Â 10–5 m2/s) of a ﬁrewall is 5 cm thick and its interior surface is insulated. The panel is initially at 25 C when its exterior surface is suddenly exposed to a temperature of 250 C. Calculate the average temperature of the panel after 2 min of exposure to this temperature. Note: A wall of width s with the temperature of one side suddenly raised to Ts and the opposite side insulated is mathematically equivalent to a wall of width 2s with the temperature of both sides suddenly raised to Ts.
11 A 12-ounce can of beer initially at 80 F is placed in a refrigerator, which is at 36 F. Estimate the time required for the beer to reach 40 F. Solution Application to this problem of the equations presented in this section requires a considerable amount of approximation, a situation that is not uncommon in practice. 5 in. , we have: L=D ¼ 4:75 ¼ 1:9 2:5 Hence, the assumption of an inﬁnite cylinder will not be a particularly good one. In effect, we will be neglecting the heat transfer through the ends of the can.
Process Heat Transfer. Principles, Applications and Rules of Thumb by Thomas Lestina, Robert W. Serth