Piston compressor parameter comparison for operation with air and freon

Importance is demonstrated for the setting up of efficient compressors for heat pumps and refrigeration equipment. Basic relationships are examined that allow one to determine the main compressor parameters: transfer coefficients, energy efficiency, work done and flow rate on using various working bodies (air and freon). With a transfer to freon, the transfer coefficient is reduced by 10-15%, while the efficiency and effective power are almost independent of the working body. This means that general use can be made of experience accumulated with air compressors in order to upgrade freon ones. © 2007 Springer Science+Business Media, Inc

Piston compressor parameter comparison for operation with air and freon

Importance is demonstrated for the setting up of efficient compressors for heat pumps and refrigeration equipment. Basic relationships are examined that allow one to determine the main compressor parameters: transfer coefficients, energy efficiency, work done and flow rate on using various working bodies (air and freon). With a transfer to freon, the transfer coefficient is reduced by 10-15%, while the efficiency and effective power are almost independent of the working body. This means that general use can be made of experience accumulated with air compressors in order to upgrade freon ones. © 2007 Springer Science+Business Media, Inc

Organic chemistry. History and mutual relations of universities of Russia

The review describes the history of development of organic chemistry in higher schools of Russia over a period of 170 years, since the emergence of organic chemistry in our country till now. © 2017, Pleiades Publishing, Ltd

Organic chemistry. History and mutual relations of universities of Russia

The review describes the history of development of organic chemistry in higher schools of Russia over a period of 170 years, since the emergence of organic chemistry in our country till now. © 2017, Pleiades Publishing, Ltd