An experimental study of R-454C pull-down performance as a drop-in refrigerant in a walk-in cold store system
| Autor: | M. Hassanain, Azza A. Mostafa, E. Elgendy |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Mechanical Engineering
Nuclear engineering 0211 other engineering and technologies Refrigeration 02 engineering and technology Building and Construction Energy consumption Cooling capacity Refrigerant Cold store 020401 chemical engineering Range (aeronautics) Thermal Water cooling Environmental science 021108 energy 0204 chemical engineering |
| Zdroj: | International Journal of Refrigeration. 130:170-178 |
| ISSN: | 0140-7007 |
| DOI: | 10.1016/j.ijrefrig.2021.05.029 |
| Popis: | Walk-in cold stores represent the majority of commercial refrigeration applications for product cooling and freezing which make it the highest energy consumer in the sector. The present research aims to assess the pull-down performance of a cold store working with R-454C as a drop-in refrigerant for R404a under different product thermal loads and cooling water temperatures. The product thermal load was changed in a wide range of 0, 450W, 900W and 1350W while the cooling water temperature was changed in range of 27 to 33°C. Experimental results presented that the energy consumption increased approximately four times when the product thermal load increased three times from 450W to 1350W. Moreover, the system COP increases by 20% as the cooling water temperature decreases from 33 to 27°C over the presented cold store temperature. Although the system COP increased by 10.8% after switching to R454C, the system cooling capacity decreased by 12.6% and the energy consumption increased by 20.6%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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