A furnace heat exchanger has a cross section like that shown in Fig. 9.28. The air flows around the three thin passages in which hot gases flow. The air is at 140°F and has a density of 2.06 Ã 10 -3 slugs/ft 3 and a dynamic viscosity of 4.14 Ã 10 -7 lbs/ft 2 . Compute the Reynolds number for
Chapter 9, Practice Problems #49
A furnace heat exchanger has a cross section like that shown in Fig. 9.28. The air flows around the three thin passages in which hot gases flow. The air is at 140°F and has a density of 2.06 × 10-3slugs/ft3and a dynamic viscosity of 4.14 × 10-7lbˆ™s/ft2. Compute the Reynolds number for the flow if the velocity is 20 ft/s.
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