Simply put, eTemp® is an Energy-Saving Device for Commercial Refrigerators.
Give Your Refrigeration Systems a Brain Transplant
- eTemp® is an NSF-certified product temperature sensor that upgrades your existing air-temp thermostats into food-temp thermostats, which means less kWh consumption, less wear & tear, and more stable product temperatures
- Conventional thermostats waste 20% of their energy and run 50% more cycles than necessary by causing the compressor to overreact to air temperature changes. Differential settings do not solve this problem to any significant degree, because most warm air (door opening) or cold air (compressor cycle) produced air temperature well above or below the differential settings.
How refrigeration units work
Refrigeration units work in a series of cycles when the unit starts and stops to maintain the required storage temperature. These air cycles (on/off) typically produce a minimum of 4 cycles per hour and, in some open display cases, 20 cycles per hour. 1st generation refrigeration systems monitor circulating air temperature in order to decide when to switch on and off. Circulating air temperature, however, tends to rise far more quickly than food temperature and, as a result, the refrigeration unit works harder than necessary to maintain stored products at the right temperature. This, in turn, leads to excessive electricity consumption and undue wear and tear on the equipment.
How eTemp™ works
eTemp® consists of an NSF-certified food simulating technology that retrofits to the sensing bulb in refrigeration thermostats. With eTemp™, the thermostat regulates the refrigeration temperature based upon product temperature rather than air temperature, thereby maintaining product at the proper temperature.
When fitted to the thermostat sensor that controls the compressor, eTemp® significantly reduces the frequency of the refrigeration cycles which are now based on food temperature rather than volatile air temperature. By using eTemp® as a cycle control mechanism, refrigeration cycles last longer but mechanical shock (starts and stops) are reduced by an average of 50%, significantly extending equipment life.
For example, a Dairy Case cycles 3 minutes on, 2 minutes off = 12 cycles per hour. With eTemp®, the cycles change to 8 minutes on, 7 minutes off = 4 cycles per hour; a 66.7% reduction in starts. As the start-up of a refrigerator compressor uses 3 times more power (i.e. start-up 12 amps, run 4 amps) considerable energy savings are achieved. In addition, the more efficient refrigeration cycle leads to a more efficient unit, which generally leads to a colder storage area by about 1-2°F.