在过去20年中，制冷行业的剧变导致传统制冷剂被非消耗臭氧层和低全球变暖潜能的制冷剂取代。大多数具有较低全球变暖潜能的替代制冷剂通常具有较低的性能系数（COP）。为了克服低COP的问题，提出了一种新型涡流管集成蒸汽压缩循环（NVTCR）。本文着重介绍在简单蒸汽压缩循环（VCR）方案中利用涡流管来改善其热力学性能的方法。建议的循环在三个压力水平下运行，即:。最低压力（蒸发器中）、中间压力（涡流管中）和最高压力（冷凝器中）。已在EES软件中编制了用于分析的计算机程序。对NVTCR进行了计算，并与R134a的VCR和基于Keller模型（VCRK）的涡流管循环进行了比较。结果表明，NVTCR（带液气换热器）的COP高于VCR和VCRK的COP。 VCR、VCRK、NVTCR和NVTCR（LVHE）的COP（分别对应于Te=-25℃和10℃）分别在1.59至4.16、1.7至4.24、1.65至4.20和1.74至4.28之间变化。考察了蒸发器温度、冷凝器温度、涡流管喷嘴效率（ηv）、冷质量分数（μ）、换热器（安装在冷凝器和分离器之后）中过冷冷冷质量分数流（z）的分叉以及液-汽换热器（εlvhe）的有效性等参数对NVTCR COP的影响。在分析所考虑的参数εlvhe、ηv、μ和z中，εlvhe对NVTCR的COP的影响最大。观察到NVTCR（LVHE）的COP相对于VCR的COP的增加百分比分别为4.46%和10.05%，对应于εLVHE分别等于0.1和1。引用:2020年虚拟会议论文

In last two decades, the upheaval in refrigeration sector has led to replacement of conventional refrigerants with non-ozone depleting and low global warming potential refrigerants. Most of alternate refrigerants which have low global warming potential, have usually low coefficient of performance (COP). To overcome the problem of low COP, a novel Vortex Tube integrated Vapour Compression cycle (NVTCR) has been proposed. The paper emphasizes on improvement in thermodynamic performance of a simple Vapour Compression cycle (VCR) by utilizing a vortex tube in the scheme of VCR. The proposed cycle operates at three pressure levels viz. lowest pressure (in evaporator), intermediate pressure (in vortex tube) and highest pressure (in condenser). A computer program has been formulated in EES software for the analysis. The results have been computed for NVTCR and compared with VCR and Vortex Tube cycle based on Keller model (VCRK) for R134a. The results show that the COP of NVTCR (with liquid vapour heat exchanger (LVHE)) is higher than the COP for both VCR and VCRK. The COP (corresponding to Te = -25℃ and 10℃ respectively) of VCR, VCRK, NVTCR and NVTCR (with LVHE) varies between 1.59 to 4.16, 1.7 to 4.24, 1.65 to 4.20 and 1.74 to 4.28 respectively. The effect of various parameters like evaporator temperature, condenser temperature, vortex tube nozzle efficiency (ηv), cold mass fraction (μ, bifurcation of cold mass fraction stream (z) for subcooling in heat exchangers (installed after condenser and separator) and effectiveness of liquid vapour heat exchanger (εlvhe) on COP of NVTCR have been examined. The effect of εlvhe on COP of NVTCR is maximum among the parameters εlvhe, ηv, μand z considered for analysis. It is observed that percentage increase in COP of the NVTCR (with LVHE) with respect to COP of VCR varies by 4.46% and 10.05% corresponding to εlvhe equal to 0.1 and 1 respectively.