MT 518 HW 7 Prob. Solutions

MT 518 HW 7 Prob. Solutions - Page 1 of 4 MT 518 Homework...

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Page 1 of 4 MT 518 Homework Problem Solutions – Lecture #7 7.1 Explain how window placement in a building could be defined as: (a) a passive solar feature, (b) an energy conservation technique, and (c) both of the above. (a) A window is a passive solar feature since it can be a means of letting in solar heat into the space as well as a source of light. (b) A window is an energy conservation feature since the use of solar lighting offsets the need for artificial lighting. The cooling load on the space is also lower by using solar lighting since the heat generated by lighting fixtures such as lamps is removed. (c) Both functions, (a) and (b) can be performed simultaneously. A window can let in daylight and serve as a source of solar heat. 7.2 A passive solar heated house is being designed in Boston, MA with a Net Building Load Coefficient (NLC) = 10,000 Btu/DD. The passive solar system consists of a Trombe Wall with 200 ft 2 of vertical double glazing and a vented 12” thick concrete wall, without night insulation.
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MT 518 HW 7 Prob. Solutions - Page 1 of 4 MT 518 Homework...

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