Carbon dioxide (CO2) is not new to refrigeration systems. Alexander Twining proposed using CO2 as a refrigerant in a British patent granted him in 1850. Thaddeus S.C. Lowe, perhaps best known for his ...
A service technician makes an expansion valve adjustment. EDITOR’S NOTE: This is the fourth of a five-part series providing a guide for retrofitting open refrigerated display cases with doors and ...
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