American Services commercial refrigeration repair in Saint Louis MO knows that supermarkets are one of the most energy-intensive types of commercial buildings. Aside from the energy requirements needed for lighting and climate control within the store, supermarkets require a massive amount of energy to chill and freeze food in both product display cases and refrigerators. In a typical supermarket, refrigeration will account for half of the store’s total energy consumption. Compressors and condensers account for about 60-70% of the refrigeration cost while the remainder is consumed by display and storage cooler fans, display case lighting, evaporator defrosting, and anti-sweat heaters.
Supermarket refrigeration systems typically require large refrigerant charges and can consume exorbitant amounts of energy every year. New technologies, such as distributed, second loop, low-charge multiplex, and advanced self-contained refrigeration systems are available that require significantly less refrigerant. Current research has demonstrated that the use of new refrigeration technology can reduce energy consumption by 10%, total equivalent warming impact (TEWI) by up to 60%, and overall operating cost by over 10%.
New technology in supermarket refrigeration systems has become paramount in reducing the overall operating costs. Distributed compressor systems are designed around having small compressor racks located in close proximity to the food display cases for the purpose of shortening refrigerant line lengths. Secondary loop systems involve having a central chiller which is used to refrigerate a secondary coolant that is then pumped to the food display cases on the sales floor. The use of self-contained display cases gives each unit their own refrigeration system. Lastly, low-charge direct expansion is similar to conventional supermarket systems but with improved controls to the limit charge.
New technology in supermarket refrigeration systems offers plenty of options to fit within the scope of your application.