Every time I walk through a supermarket I take a look at the refrigeration and freezer cases. I want to see how well they are holding the temperature they should be holding. But from time to time, I realize that aspect of refrigeration is but a small part of how important it is to keep cold things cold.
In recent months, Tecumseh Products Co. has made a number of announcements related to a line of refrigeration compressors that are optimized for HC refrigerants, an expansion of its line of large frame rotary compressors, and the introduction of direct current (dc) compressors.
A study from Carel has tried to get a precise handle on supermarket refrigeration energy savings at various levels of upgrades and at the same time has assigned some new terminology to the steps — ‘traditional,’ ‘evolved,’ and ‘excellent.’
Featuring a space-saving design, the Serenity Series Cubelet Ice Machine, FS-1500MLH-C, produces up to 830 pounds of chewable cubelet ice per 24 hours. The shallow depth provides easy access to the dispenser bin.
Engineers at the University of Washington in Seattle and Kettering University in Flint, Mich., are working to cut the amount of energy used by refrigerated display cases. Results published in the journal Applied Thermal Engineering show that tweaking the physics can reduce the energy used for refrigeration by as much as 15 percent.
Hill Phoenix Inc., a Dover Company, has announced the acquisition of Denmark-based Advansor A/S. The Danish company specializes in the design and manufacture of CO2 transcritical refrigeration and heat pump systems for supermarkets and light industrial applications.
In many aspects the first part of a job is like detective work — not only does a technician need to identify the problem but he also must determine its root cause. A good initial step is to visually inspect the entire system.
As the world of refrigeration moves away from traditional CFCs and HCFCs toward more environmentally friendly alternatives, the use of ammonia refrigerants has been gaining in popularity and trending upwards.