A flat plate solar collector heats water by means of a 1 in diameter copper tube. At a certain time the inside surface of the copper tube is at 115ºF and the water enters at 50ºF. The water should be leaving the collector at 95ºF with a flow rate of 140 ft^3/hr. Determine (a) the Reynolds number and (b) the length of tube needed.
What will be an ideal response?
Using properties of saturated liquid water at 80ºF from the Appendix Table B.6E, the Reynolds number is
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