| dc.description.abstract | A refrigeration cycle system utilizing two types of gas can be conceptualized as a
thermodynamic setup designed to optimize cooling efficiency across varying temperature
ranges. This can either be a cascade system, where two distinct refrigeration loops operate
in tandem, each using a refrigerant suited to its respective temperature range, or a mixed
refrigerant cycle, which uses a blend of gases to achieve efficient cooling over a broad
spectrum within a single loop. This system using R-134a for high-temperature applications
and R-600a for low-temperature operations enhances efficiency by optimizing performance
across different temperature ranges. R-134a, known for its low global warming potential,
performs effectively in moderate to high-temperature conditions, while R-600a, designed
as a drop-in replacement for R-22, excels in low-temperature applications due to its
favorable thermodynamic properties. The efficiency of such a cascade system is measured
by the Coefficient of Performance (COP), which improves by reducing the temperature
glide and minimizing compressor work. The combination of these refrigerants ensures
energy-efficient operation, particularly in industrial refrigeration, cryogenics, and LNG
applications, while adhering to environmental regulations. These systems are particularly
advantageous in applications requiring ultra-low temperatures, such as cryogenics,
industrial freezers, and liquefied natural gas (LNG) plants. | en_US |
