Paper No 301 – Comparative Analysis on Ejector and Converging Tee-driven Refrigeration Systems – 14th IEA Heat Pump Conference, Chicago, USA
The growing need for thermal comfort has resulted in an increase in refrigeration systems and, as a result, increased electricity demand for these systems. Waste heat-driven devices for refrigeration systems appear to be a potential alternative to traditional compression-based refrigeration technologies for reducing energy consumption. These devices in the refrigeration cycle can be driven by waste heat (free or inexpensive lowtemperature energy source) as the primary energy source instead of electricity. This study investigates the ejector-driven and converging Tee-driven refrigeration systems (EDRS & CTDRS) using waste heat, aiming to provide an alternative to traditional VCC. An experimental setup is developed with a 3.6 mm nozzle size of an ejector and a converging tee diameter of 12.7 mm. A comparative experiment was conducted to assess the coefficient of performance (COP). In terms of performance, the EDRS COP outperformed the converging-teedriven refrigeration cycle. The results showed that the proposed concept is promising to develop an alternative to the traditional refrigeration cycle and heat recovery.