Question-4 (CLO-1, PLO-1) (Word limit: 400) Download and summarize a research paper in which researchers have experimentally applied and analyzed a sub cooling technique for enhancing the COP of the vapour compression refrigeration system. The summary should include the followings: i. ii. iii. iv. The experimental set-up and its working What variables have been analyzed? What were the results? What do you think are the limitations of this study? Note: Give proper references wherever required. Similar sheets will be cancelled and marked as zero.