6533b7d7fe1ef96bd12684d3
RESEARCH PRODUCT
PERFORMANCE EVALUATION OF CASCADE REFRIGERATION SYSTEMS USING DIFFERENT REFRIGERANTS
Antonio MessineoDomenico Pannosubject
Fluid Flow and Transfer ProcessesMaterials scienceCascade refrigerationRenewable Energy Sustainability and the EnvironmentThermodynamicsButaneRefrigerantchemistry.chemical_compoundchemistryControl and Systems EngineeringCascadePropaneHeat exchangerSettore ING-IND/10 - Fisica Tecnica IndustrialeCascade refrigeration system thermodynamic analysis natural refrigerantsTemperature differencedescription
Due to the negative effects of synthetic refrigerants on the environment, natural refrigerants have obtained again interest as alternative refrigerants for different applications because of their zero ODP and negligible GWP. This paper presents a thermodynamic analysis of different two-stage cascade refrigeration systems using as refrigerant carbon dioxide (R744) in low-temperature circuit, and, respectively, ammonia (R717), propane (R290), butane (R600), R404A, R410A and R134a in high-temperature circuit. The operating parameters considered in this study include condensing and evaporating temperatures in high-temperature circuit, temperature difference in the cascade heat exchanger, and evaporating and condensing temperatures in the low-temperature circuit. The results obtained show that a cascade refrigeration system using natural refrigerants is an interesting alternative to systems using synthetic refrigerants for energetic, security and environmental reasons.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-09-01 |