How does a whole house fan apply to the law of thermodynamics?

Question

for my project i am supposed to pretend to build a cool house

Answer 1

It removes the heat the same way a computer fan removes the heat from a CPU.

Answer 2

Whole house fans can reduce or even eliminate air conditioning use by taking advantage of the natural cooling cycles that nature provides. Here's how they work: The whole house fan is mounted between your living space and the attic, and is operated in the evening, night-time and morning, when outside air is cool. The device draws cool fresh air in through open windows while exhausting hot stale air out through attic roof vents. This circulation creates a fresh and comfortable living environment and, importantly, draws heat out of the structure to reduce/delay heat loading for the next day.

While especially effective in dry desert climates, whole house fans can be great in other climates as well, though often in shoulder seasons and/or working in conjunction with AC. We've sold AirScape whole house fans all over the country, including New Orleans, Florida and Maine. AirScape fans use less than one tenth the energy of typical AC units, so in almost any climate an AirScape fan can help reduce your energy consumption while you enjoy fresh, natural breezes rather than recycled indoor air.

Answer 3

If it's colder outside than it is inside and you want to cool your house, it makes perfect sense that you would exchange your warm inside air for cold outside air.  A whole house fan can do that, particularly if it also pushes the relatively hot air out of the attic.

Answer 4

Elaborate. What project? What do you want to know?

What do you want to do?

A cool house could be built with a fan in the attic.

At night it draws warm air out into the night and fresh air is drawn in downstairs.