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المؤلفAhmad K., Sleiti
المؤلفAl-Ammari, Wahib A.
المؤلفAl-Khawaja, Mohammed
المؤلفSaker, Ahmad T.
تاريخ الإتاحة2024-02-11T10:41:06Z
تاريخ النشر2022-05-10
اسم المنشورApplied Thermal Engineering
المعرّفhttp://dx.doi.org/10.1016/j.applthermaleng.2022.118635
الاقتباسSleiti, A. K., Al-Ammari, W. A., Al-Khawaja, M., & Saker, A. T. (2022). Experimental investigation on the performance of a novel thermo-mechanical refrigeration system driven by an expander-compressor unit. Applied Thermal Engineering, 212, 118635.
الرقم المعياري الدولي للكتاب1359-4311
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S1359431122005828
معرّف المصادر الموحدhttp://hdl.handle.net/10576/51758
الملخصOperating thermos-mechanical refrigeration (TMR) ejector-based and organic Rankine cycle-based refrigeration systems at ultra-low temperature heat source (60 °C to 100 °C) is challenging and limited by their low coefficient of performance (COP), instability, and high cost. To overcome these limitations, an innovative TMR system consists of a power loop coupled with a cooling loop through an expander-compressor unit (ECU) was introduced. To ensure the efficient operation, reliability, and flexibility, of the ECU-based TMR system, a thorough experimental investigation is presented in this study. In the present setup, an air compressor is used to provide pressurized air to drive the ECU at a desired pressure of 620 kPa. Using R134a as a refrigerant, the performance of the ECU-based refrigeration system is systematically tested for various operating conditions including refrigerant mass, evaporator pressure, temperature and flow rate of the water used for evaporation and condensation loads. All tests are performed at two operating frequencies of the ECU (0.50 Hz and 0.33 Hz). Over a wide range of testing conditions, the results show that the average COP Hz varies from 1.57 to 2.73 at 0.50 Hz and from 1.56 to 2.39 at 0.33 Hz. Moreover, the evaporator temperature reaches less than −10 °C at 0.50 Hz and −9.60 °C at 0.33 Hz. These experimental results prove that the COP of the ECU-based refrigeration system is three times higher than the ejector-based systems and 2.70 times higher than the organic Rankine cycle-based systems.
راعي المشروعThe work presented in this publication was made possible by NPRP-S grant # [11S-1231-170155] from the Qatar National Research Fund (a member of Qatar Foundation).
اللغةen
الناشرElsevier
الموضوعThermo-mechanical refrigeration
Experimental investigation
Expander-compressor unit
COP
Evaporation capacity
R134a
العنوانExperimental investigation on the performance of a novel thermo-mechanical refrigeration system driven by an expander-compressor unit
النوعArticle
رقم المجلد212
Open Access user License http://creativecommons.org/licenses/by/4.0/
ESSN1873-5606
dc.accessType Open Access


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