Use waste heat to create cooling effect

[engineer46]

input heat, output cooled air

Homework Statement

As the title says, I am looking to produce cool air with heat.

Homework Equations

The Attempt at a Solution

 

[rude man]

Your only hope is the gas refrigerator, called the Electrolux refrigerator. It was invented by two Swedes while they were still undergraduates! This refrigerator does not use mechanical input to operate, just a high-temperature source. If 650F is high enough I have no idea.

 

[NascentOxygen]

Kerosene-burning refrigerators were popular last century in homes with no electricity supply. The modern equivalent uses refillable cylinders of camping gas. http://en.wikipedia.org/wiki/Absorption_refrigerator

http://en.wikipedia.org/wiki/Einstein_refrigerator

 

[NascentOxygen]

If there is one big attraction of electric fridges it's that they kill far fewer people than do the combustion fridges. Kero and gas fridges can cause house fires, and they can also kill people by carbon monoxide poisoning when poorly maintained operation occurs in a confined space (house, caravan, etc.)

 

[DeeNos]

There are several ways in which waste heat can be used to create a cooling effect. One method is through the use of a thermoelectric cooling system, which utilizes the Peltier effect to transfer heat from one side of a thermoelectric module to the other. This allows for the creation of a temperature gradient, with one side becoming cold and the other becoming hot. By placing the cold side in the desired location, cool air can be produced.

Another method is through the use of a heat-powered absorption chiller. This technology uses a heat source, such as waste heat from industrial processes, to drive a refrigeration cycle and produce cool air. This can be a more efficient option for larger cooling applications.

In addition, waste heat can also be used to power a steam turbine, which can then drive a vapor-compression refrigeration cycle to produce cool air. This approach is commonly used in district cooling systems, where waste heat from power plants or industrial processes is used to cool multiple buildings.

Overall, utilizing waste heat to create a cooling effect can be a sustainable and cost-effective solution for cooling needs. By repurposing waste heat, we can reduce energy consumption and mitigate the environmental impact of traditional cooling methods.