Green Cooling is what we call environmentally friendly air-conditioning and refrigeration (RAC) with minimum negative impacts on the environment.
The negative environmental effects of cooling appliances are due to their direct and indirect emissions. To avoid emissions, green cooling RAC equipment involves two main factors: Climate-friendly refrigerant and high energy efficiency.
The following subsectors have a substantial environmental impact due to refrigerant leakage and energy consumption. At the same time these subsectors have a high potential for emission reductions and the application of natural refrigerants instead of fluorinated gases.
Leakage rates are especially high in mobile air conditioners. Even though the amount of refrigerant per car is relatively low, the sheer number of cars worldwide makes mobile air conditioning an important contributor to global CO2-emissions. In terms of energy efficiency, additional fuel consumption when driving with the AC switched on can be up to 20%.
Air conditioning in buildings is the fastest growing of all the RAC subsectors, especially as more and more people in developing and transitioning countries in warm climates can afford air conditioning in their homes. In some cities, AC use is already responsible for up to 40% of all electricity consumption.
Similarly to unitary air conditioning, the demand for large air conditioning chillers is growing rapidly as more and more new buildings have some kind of central air conditioning installed. These often contain several hundreds of kilograms of refrigerant and consume a lot of electricity.
A refrigerator is often the first electric appliance bought in a household and there are over 1 billion refrigerators and freezers worldwide. This is one of the few subsectors with a commercially available and successful natural refrigerant solution. Further distribution and improvement of energy efficiency is relatively easy and could save high amounts of energy.
Transport refrigeration is a vital part of every cold chain: Perishable goods, mainly food but also medical supplies and other goods, have to be refrigerated on their way from harvest or production to the consumer. Refrigerated transport increases food safety and prevents economic losses due to spoilage. Trucks and trailers are in many parts of the world the main mode of transport for refrigerated goods.