Faculty of Physics, Jagannath University, Dhaka, 1100, Bangladesh.
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
Environ Sci Pollut Res Int. 2021 Jan;28(3):2934-2947. doi: 10.1007/s11356-020-10656-9. Epub 2020 Sep 8.
The Kyoto Protocol has stipulated array of national policies to combat the climate change. To tackle the global warming, governments embraced Paris Agreement and Kigali Amendment which deal with the reduction of greenhouse gas emission. For example, the European F-gas regulation and the Japan METI now enforce refrigerants below 150 GWP for automobile industry and below 750 GWP for the residential air-conditioning applications. To invent a perfect refrigerant that meets performance requirement, environmental requirements, and safety standards is considered extremely difficult. On the other hand, some existing refrigerants exhibit excellent performance with safe operation but record high-GWP while refrigerants such as R1234yf and R744 possess almost 0 GWP. Thus, these refrigerant blends might serve as urgent solutions with minimum performance compromise. This paper evaluates the performance of binary and ternary blends using several promising refrigerants. Exploiting the excellent performance of R32 as the base refrigerant, R1123, R1234yf, R1234ze(E), and R744 are utilized in the blends. The performance indicators employed here are (i) GWP, (ii) temperature glide, (iii) volumetric capacity, and (iv) coefficient of performance. The advantages to reduce the irreversible heat loss by glide matching and energy saving potential for the blends are also discussed. Results showed that some refrigerant blends considering GWP 200 and 300 could successfully replace the widely used R410A in a residential air conditioner. Thermodynamic cycle and performance of zeotropic blend.
《京都议定书》规定了一系列国家政策来应对气候变化。为了解决全球变暖问题，各国政府通过了《巴黎协定》和《基加利修正案》，以减少温室气体排放。例如，欧洲 F 气体法规和日本经济产业省（METI）现在要求汽车行业使用全球变暖潜能值（GWP）低于 150 的制冷剂，住宅空调应用的 GWP 则要低于 750。发明一种满足性能要求、环境要求和安全标准的完美制冷剂被认为极其困难。另一方面，一些现有的制冷剂具有出色的性能和安全操作，但 GWP 很高，而 R1234yf 和 R744 等制冷剂的 GWP 几乎为 0。因此，这些混合制冷剂可能是一种可行的解决方案，可以在最小性能损失的情况下缓解问题。本文评估了使用几种有前途的制冷剂的二元和三元混合物的性能。利用 R32 作为基础制冷剂的优异性能，将 R1123、R1234yf、R1234ze(E)和 R744 用于混合物中。本文使用的性能指标包括 (i) GWP，(ii) 温度滑移，(iii) 容积容量，和 (iv) 性能系数。还讨论了通过滑移匹配减少不可逆热损失和混合制冷剂节能潜力的优势。结果表明，一些考虑 GWP 200 和 300 的制冷剂混合物可以成功替代住宅空调中广泛使用的 R410A。共沸混合物的热力学循环和性能。
