Brazed heat exchangers integral part of sustainable refrigeration system Case story tions are found both in commercial and industrial refrigeration. Significant savings In Birton’s CO 2 system, a condenser is cooled by the primary refrigeration system [see flowcharts on second page]. Gravity leads liquid CO 2 to one of the two pumping vessels, where the pressure is equalized with the condenser pressure. The pumping pressure is generated

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