The DRYCOOL 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.
The new design is optimized for R134a and R407F refrigerants in order to comply with future EU’s regulations which will phase out refrigerants, such as R404A and R507 in 2017 (GWP > 2500).
Very good thermal performance is achieved thanks to a patented and dedicated distribution system and new baffles, which minimize the shell bypass.
Very efficient single-pass, counter-current design provides the best possible performance. Moreover, exchange tubes with an inner grooved pattern maximize the heat transfer coefficient and limit the negative effects of pressure drop.
No safety margin is required for thermal sizing of the DM evaporator, which is generally recommended for other evaporators (Dryplus-3 and Dryplus-E) in DRYCOOL smarTube user guidelines.