Shell and tube heat exchanger DM

for ships

The Alfa Laval DM is a single-pass dry expansion evaporator for commercial and industrial refrigeration cooling for medium-temperature applications with evaporation temperatures in the range of -10 ÷ -20°C. DM is optimized for R134a and R407F refrigerants at medium pressures (21.5 barg). Capacity range 100 - 800 kW. PED/CE, ASME, EAC, SELO, DNV and other major marine approvals are available. The Alfa Laval DM replaces the Alfa Laval Dryplus-3 product line for negative evaporation temperature. The Alfa Laval DM model is a dry-expansion shell-and-tube evaporator developed for medium temperature refrigeration applications.The DM design is optimized for R407F and R134a refrigerants, but can also be utilized with R404A and R507. Application The Alfa Laval DM evaporator has been developed for commercial and industrial refrigeration applications at medium temperatures ( -2°C to + 4°C), for supermarket food storage cooling or for industrial process cooling. These applications typically demand evaporation temperatures in the range of -10 to -20°C depending on the system efficiency and brines, such as propylene and ethylene glycols. Technology The Alfa Laval DM design is optimized for R407F and R134a refrigerants, but it can also be utilized with R404A and R507. With its innovative single-pass counter-current design, Alfa Laval's DM shell-and-tube evaporator series guarantees maximum efficiency, low cost and a new level of competitiveness.