Solar heat can be used to run solar cooling equipment to generate cost-free air conditioning for a property. Solar cooling is a proven technology that can be combined with a gas or oil furnace as a backup.
Many different principles are used to generate solar cooling from heat, but one rule is that the processes become more efficient at higher temperatures. At 80°C, 1 kWh of heat can generate 0.7 kWh of cooling. At 160 degrees Celsius, 1 kWh of heat can generate 1.6 kWh of cooling. Lower temperatures often work best in smaller systems, whereas large cooling systems should work at higher temperatures.
Cooling processes become more efficient at higher temperatures.
The solar cooling system generates cooling and a large amount of warm water at 35°C. This can be used to heat the pool at a hotel or to preheat the hot water in a home. The heat can also be cooled down using a cooling tower.
- Solar cooling for the production of household chemicals.
- Solar cooling in the dairy industry
- Solar cooling can also be applied to district heating.
After mixing the chemical, the product needs to be cooled before it can be filled in a bottle for sales. A solar-powered absorption chiller can provide the necessary cooling. Waste heat from the chiller can be used in the processes.
To preserve the milk and the products like yogurt, ice-cream, and cream, cold storage is necessary. A solar thermal system can provide both heat for the processes and cold storage for the milk products.
Many buildings need air condition and instead of using electric units in each room, a heat-powered central chiller is more efficient.
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