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Category > Engineering Posted 07 May 2017 My Price 15.00

An air-to-water compact heat exchanger is to be designed

An air-to-water compact heat exchanger is to be designed to serve as an intercooler for a 5000-hp gas turbine plant. The exchanger is to meet the following heat transfer and pressure drop performance specifications:

 

The exchanger is to have a cross-flow configuration with both fluids unmixed. The heat exchanger surface proposed for the exchanger consists of flattened tubes with continuous aluminum fins, specified as an 11.32-0.737- SR surface in Kays and London [10]. The heat exchanger is shown schematically:

The measured heat transfer and friction characteristics for this exchanger surface are shown in the accompanying figure on the next page:

The design should specify the core size, the air flow frontal area, and the flow length. The water velocity inside the tubes is 4.4 ft/s (1.34 m/s). See Problem 8.53 for the calculation of the water-side heat transfer coefficient. Notes: (i) The free-flow area is defined such that the mass velocity, G, is the air mass flow rate per unit freeflow area; (ii) the core pressure drop is given by ∆p/fG2 L/2rh where L is the length of the core in the air flow direction; (iii) the fin length, Lf, is defined such that Lf 2A/P where A is the fin cross-sectional area for heat conduction and P is the effective fin perimeter.

 

Answers

Alpha Geek
(8)
Status NEW Posted 07 May 2017 05:05 PM My Price 15.00

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file 1494179363-Answer.docx preview (227 words )
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