What are the characteristics of CO2 cycles for refrigeration?
The simplest implementation of a CO2 refrigerant circuit is the traditional circuit used for any other refrigerant. This involves a compressor, an expansion element and two heat exchangers, one of which an evaporator and the other a gas cooler/condenser. (…)
How is the TEWI of a refrigeration system calculated?
TEWI is used in the HVAC/R sector, and is described by a formula. This is the first problem: formulas are not that popular, with very few exceptions, e.g. E=MC2. In the TEWI formula, the impact of a refrigeration system is expressed by the sum of its direct effect and its indirect effect on global warming.
How can the energy efficiency of bottle coolers be increased?
Variable-speed compressors (especially those with DC technology), LED lights, smart control systems, electronic expansion valves, insulation, doors and variable-speed fans are among the key components that reduce the power consumption of cabinets. Variable-speed compressors are especially effective in the pull-down stage and on changes in season, as variations in load are managed precisely with constant control of the compressor envelope.
