In recent years, the international community has been continuously encouraged the development of new vapor compression refrigeration systems, that operate with ecological refrigerants, to replace systems with non-ecological refrigerants. In view of this need, this paper presents a mathematical model of a small cooling capacity vapor compression refrigeration system. This model was used to design an energy-efficient system, with low cost, that operates with the most appropriate ecological refrigerant in terms of overall environmental impact, focusing the refrigerants R290, R600a, and R1234yf. The environmental analysis was performed based on TEWI (Total Equivalent Warming Impact), while the thermo-economic analysis was performed based on COP (Coefficient of Performance), η_exergy (Exergy Efficiency), and ${\dot{\mathrm{C}}}_{\text{total}}$ (Total plant cost rate). Also, the contribution of each individual cost rate related to ${\dot{\mathrm{C}}}_{\text{total}}$ was identified. A similar procedure was also carried out on the total exergy destruction. The thermo-economic and environmental analysis indicated that the system with R290 has higher energy, exergy, environmental, and economic performance among the evaluated systems for the studied thermodynamic conditions. Thus, the system with R290 is the most suitable to replace systems with R134a. Finally, analyzing the three cost rates related to ${\dot{\mathrm{C}}}_{\text{total}}$ in each system, it was noted that the operational cost rate was the most relevant cost, and it corresponds to more than 73% of the ${\dot{\mathrm{C}}}_{\text{total}}$ value, while the penalty cost rate due to carbon dioxide emission was the least relevant cost, corresponding to less than 2.60% of the ${\dot{\mathrm{C}}}_{\text{total}}$ value.

近年来，国际社会不断鼓励开发使用生态制冷剂的新的蒸气压缩制冷系统，以用非生态制冷剂替代系统。鉴于此需求，本文提出了一种小型制冷量蒸汽压缩制冷系统的数学模型。该模型用于设计一种低成本的节能系统，就整体环境影响而言，该系统使用最合适的生态制冷剂运行，并集中使用制冷剂R290，R600a和R1234yf。环境分析基于TEWI（总当量加温影响）进行，而热经济分析基于COP（性能系数），η_火用 （能效），和 ${\dot{\mathrm{C}}}_{\text{总}}$（总工厂成本率）。同样，每个单独的成本率的贡献与${\dot{\mathrm{C}}}_{\text{总}}$被确定。还对总火用破坏进行了类似的程序。热经济和环境分析表明，对于所研究的热力学条件，带有R290的系统在评估的系统中具有更高的能量，火用，环境和经济性能。因此，具有R290的系统最适合替代具有R134a的系统。最后，分析与${\dot{\mathrm{C}}}_{\text{总}}$ 在每个系统中，都注意到运营成本比率是最相关的成本，它对应于超过73％的成本。 ${\dot{\mathrm{C}}}_{\text{总}}$ 值，而二氧化碳排放造成的罚款成本率是最不相关的成本，不到总成本的2.60％ ${\dot{\mathrm{C}}}_{\text{总}}$ 值。