Due to weight limitations the system is equipped with single-stage compressor
, which operates at very low evaporation temperatures.
While the design of the mixed refrigerant system test apparatus is related to the two-stage cascade refrigeration system shown in Figure 1, it only uses one single-stage compressor
. A Copeland CF12 reciprocating compressor was selected for the mixed gas refrigeration cycle and is modeled using empirical performance data at varying operating conditions provided by the manufacturer (Emerson 2010).
Because this program tested only a single-stage compressor
, the aerodynamic work input (and power) remained the same between the adiabatic and diabatic tests.
As a result, the supply pressure required by the probe is reduced dramatically and a single-stage compressor
, comparable to a small refrigeration compressor, can be used to energize the system.
Sullair Corp., a business unit of Hamilton Sundstrand, a United Technologies Co., has announced the availability of its most energy efficient single-stage compressor
, the 7500 S-energy[R] Series with Energy Efficiency System (EES) heat recovery.
STE, an innovator in the international turbomachinery business, develops, produces and distributes single-stage compressors
and small steam turbines for environmental and industrial applications.
The product line includes two single-stage compressors
, which provide 16.4 to 21.3 CFM at 100 PSI, or 16 to 20.9 CFM at 125 PSI.
Hasegawa USA, San Antonio, Texas, USA (Fax: 1-210-494-9680), has broadened its Surely[R] range of reciprocating compressor applications by introducing the VZL4 and VZ6 single-stage compressors
as well as the new VZL31 and VZ42 two-stage compressors.
Owing to the much higher resistance to wear and the inherent durability of cast iron components, as compared to aluminium, the new Ecomaster single-stage compressors
are competitive in price with the aluminium reciprocating ones, and offer much higher reliability and longer life performance, we are assured.