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The pioneer in electronic expansion valve control

Thursday, December 1, 2011

When Danfoss introduced it's first microprocessor based ADAP-KOOL® controller back in 1987 it was also the first controller with adaptive (self learning) Superheat control.

Danfoss had been gaining experience since 1980 whilst developing analogue controllers for thermostatically activated expansion valves and suction pressure valves.

With the microprocessor technology new "doors" were opened to develop smarter control algorithms utilizing the high level of refrigeration expertise within the Danfoss Group.

Based on the Minimum Stable Superheat signal (MSS principle), which was developed by the Danfoss Refrigeration Laboratory, a new adaptive superheat control algorithm was invented.

Today’s ADAP-KOOL® evaporator controllers for display cases and cold rooms include the 4'th generation of intelligent and adaptive control where it has also been possible to make efficient electronic injection control within CO2 applications with direct expansion.