CO2 Refrigeration is commonly used in applications like grocery stores; supermarket rack systems and modern industrial refrigeration too. CO2 in refrigeration works differently than all the other refrigerants because of what we call the supercritical state in thermodynamics. CO2 when running at a temperature higher than 31’C enters its state which is called a supercritical state where it’s not a gas or liquid. CO2 is a highly efficient gas and it is best for refrigeration because it is inflammable, nontoxic, and has a GWP or global warming potential of only 1. CO2 systems are way more far efficient than any other systems and they are very robust to work with. All the modern racks coming down into supermarkets are CO2 racks. The only limitation is when the temperature reaches above 31’Celcius. CO2 reaches its transcritical stage and at that moment they don’t work efficiently because of the temperature and pressures of CO2. It is normally seen that R404A racks are way more efficient at that moment because of way higher temperatures and pressures. CO2 systems are also known as CO2 transcritical booster systems. Working with CO2 in refrigeration even though it is efficient, requires proper knowledge to work with otherwise it could be a disaster. We at DHVAC Heating, Refrigeration, Appliances & Air-conditioning Systems install, maintain and service all kinds of CO2 systems. We have got highly skilled professionals on our Team with years of experience in the industry with the guaranteed satisfaction that the job will be done right. For more info, please visit our website or give us a call.