Questions tagged [building-physics]
The physics of buildings, specifically thermal conduction, convection, & radiation; heating and cooling; ventilation; transmission and management of water vapour & pollutants
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Building a machine from an ideal physics problem
I have a physics professor for whom I'd like to build a machine. Featured in a problem he is notorious for assigning students, originally from Kleppner and Kolenkow's "Mechanics," the machine causes ...
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Place a greenhouse: how to orient it for the best effect?
I'm looking for the best orientation (North-East-South-West) of a greenhouse (simplifiable as a rectangular solid).
My question is more specifically about the sun position effects (over the times of ...
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How do we define the durability as per density?
We define the durability with the equation as seen below.
$$x\propto \frac{\text{Cross-Sectional Area}}{\text{Cross-Sectional Area}\times \text{Length} }$$
Hence
$$\therefore x\propto \text{Length}...
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What does this equation mean?
$$\propto \dfrac {\text {Cross-Sectional Area}}{\text {Volume}} $$
I've seen this equation on my textbook (physics).
Let us imagine that there are two pen with $7$ and $3$ lenght. Which is harder ...
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When does window insulation have more impact than attic?
Is there any way to determine either empirically or by convention a rule-of-thumb when one should spend money on insulating windows rather than insulating the attic of a house or building to keep it ...
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Does attic insulation help cool a building?
Given that hot air rises, it's easy to understand how attic insulation can help keep a building warm; say, in the winter, for example. But when winter changes to summer, does the attic insulation help ...
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Where to start when studying Architectural Engineering by myself? [closed]
I have this idea of creating my own curriculum for studying Architectural Engineering. I aim at talking with actual architectural engineers in my surroundings and ask them for advice on the topics I ...
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Controlled demolition of a sky scraper?
Sky scrapers are often found in dense urban environments. Is there a known method to controllably demolish a sky scraper with minimal collateral damage?
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Windproof open doors room design
I live somewhere where it's relatively warm the entire year (around 10ºC is the coldest you'll get in some days during a normal winter).
I am dreaming of a house design that I intend to build in the ...
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equivalent full hours of heating equipment
I would like to know if there is a standard way of calculating the equivalent to a capacity factor but for heating equipment. That is the ratio between the amount of heat delivered during one year ...
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What is the most efficient way to ionize air?
I have a project to convert wind energy directly to electrical energy with no moving parts. The wind will enter a reducing tunnel for concentration, then go through an unobstructing de-humidifier, ...
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Has anyone achieved significant energy savings by increasing the cooling setpoints in retrofit office buildings, in practice?
I have a simulation based research vs. practical experience type question:
There are a number of academic research papers available which claim 20% to 40% cooling energy savings by increasing the ...
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Reaction forces in a structure
I have the following structure, in which I am failing to calculate the two reactions: Cz (apparently vertical) and Dz, in the roller support of the beam. The beam length is 7.5 m, the reactions Az, Cx,...
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Rubber band Powered Free Flight Helicopter [closed]
I am building a free flight helicopter for a Science Olympiad competition, and the general rules are as such: https://www.soinc.org/sites/default/files/uploaded_files/Helicopters_2017_Diagram.pdf
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How to estimate the physical parameters of 40% Cu + 60% Mo alloy?
I need to know, or estimate the physical characteristics of the alloy which consists 40% copper and 60% molybdenum. I know only:
Density: $9.62 \frac{g}{cm^3}$
Thermal conductivity: $223 \frac{W}{m·K}...
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