Focus on semi-hermetic reciprocating compressors

Frascold, the Italy-based manufacturer of compressors and condensing units, held a seminar on semi-hermetic reciprocating compressors on April 23 at the Radisson Blu Hotel, Dubai Deira Creek. The seminar was conducted by Massimo Gentile, Sales Area Manager.

After a short introduction on the history and profile of Frascold, he discussed the features of a number of Frascold’s semi-hermetic reciprocating compressors, including single-stage compressors, compressor series “VS” with built-in inverter, tandem compressors and two-stage compressors.

Single-stage compressors, he said, were suitable for R407A and R407F refrigerants and for variable speed drive. He also highlighted that they were sturdy, reliable, efficient, compact and silent.

Compressor series “VS” with built-in inverter, he pointed out, had better COP at part-load, better thermal stability of the system, less start-ups, and less noise and vibration.

Tandem compressors had double capacity control options and were able to increase the possibility of regulating refrigeration capacity and adapt it to real system needs.

Two-stage compressors, he added, were optimal for extremely low evaporating temperatures, like in shock freezing systems or cryogenic applications.

In addition, Gentile also spoke about the LaBlu and the SA series of air- cooled condensing units with semi-hermetic compressors. He highlighted that LaBlu units satisfied a wide range of applications with refrigerants R134A, R404A, R507A, R407C and R22. They also had performance, reliability and versatility significantly higher compared to market standards.

Gentile’s presentation also involved a short demonstration of how to use, upload and interpret data monitored by the Kriwan INT69 Diagnose protection and diagnostic device for compressors.