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Hmk_5_2001_Heat_Loss - School of Architecture University of...

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School of Architecture University of Florida Environmental Technology I ARC 3610 Morgan | Gold | Ogoli | Kim | Paek Spring, 2001 Homework Assignment 5 Heat Loss Calculation This homework provides students with an opportunity to investigate and understand the estimation of heat losses in buildings. It is due at the beginning of lab on Thursday, February 21 th 2001. Heat loss occurs when the outside temperature is cooler than the interior temperature. If it is very cold outside and the need is to maintain a higher temperature inside, then heat has to be added at the rate at which it is being lost. Maximum heat loss occurs in the winter time in the early morning hours when the sun has been set for quite some time and objects on the ground have radiated the heat of the day to the night sky. Because of this, a steady state condition occurs in which the amount of heat loss from a building is based on the difference between the inside and outside temperatures (t i and t o ). If the outside temperature is established for reasonably cold winter nights, then a heating system can be designed that will supply enough heat to off-set this loss and maintain comfort for the night time winter condition. Ultimately, this allows the choosing of appropriately sized heating equipment and actually leads to the prediction of how much it costs to heat the building.
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