MT 518 HW 5 Prob. Solutions

MT 518 HW 5 Prob. Solutions - Page 1 of 6 MT 518 Homework...

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Page 1 of 6 MT 518 Homework Problem Solutions – Lecture #5 5.1 Describe the various solar collectors that are available, where are they best suited and advantages/disadvantages Collector Type Description Advantages Disadvantages Application Flat Plate - Liquid Flat Plate – Air A flat-plate collector consists of an absorber, a transparent cover, a frame, and insulation. Together with the frame, the cover protects the absorber from adverse weather conditions. Typical frame materials include aluminum and galvanized steel; sometimes fiberglass-reinforced plastic is used. The liquid type flat plate collectors have liquid conduits running along the absorber plate. Whereas air type collectors have ducts that run along the absorber plate. Least expensive Easy to mount on roofs and stand alone structures Limited low temperature applications Agriculture and Pool Heating Space and Hot Water Heating No freezing or corrosion Any leaks have minimal effect on the operation of the system Air from the collectors can heat the interior of a building directly Air requires greater storage volume than water Space Heating
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Page 2 of 6 Collector Type Description Advantages Disadvantages Application Tubular – Flat Plate Concentric Tubular Concentrating Vacuum Bottle The absorber strip is located in an evacuated and pressure proof glass tube. The heat transfer fluid flows through the absorber directly in a U- tube or in countercurrent in a tube-in-tube system. Several single tubes,
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MT 518 HW 5 Prob. Solutions - Page 1 of 6 MT 518 Homework...

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