What is the weight difference of an airtight building with varying temperatures?

Thread starter Loren Booda
Start date Aug 26, 2003
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Architecture

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The discussion centers on calculating the difference in weight of an airtight, rigid building with an air capacity of 100,000 m3 when heated to 20°C on a winter day at -10°C versus cooled to 25°C on a summer day at 40°C. To accurately determine this weight difference, the humidity levels on both days are crucial, as they affect air density. The psychometric chart is recommended for understanding the relationship between temperature, humidity, and air density. The key takeaway is that the weight difference is influenced by the changes in air density due to temperature and humidity variations between the two seasons.

Aug 26, 2003

Loren Booda

A building with air capacity of 100,000 m³ is heated to 20^oC on a winter day of -10^oC. During a summer day of 40^oC it is cooled to 25^oC. Assuming the building is airtight and rigid, and with standard pressure outside, what is its difference in weight between these two days?

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Aug 26, 2003

russ_watters

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Do a google search for "psychometric chart." You need to know humidity though.

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