کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
788749 | 1466431 | 2013 | 9 صفحه PDF | دانلود رایگان |
• Analysis of an experimental cold storage tank containing paraffin.
• Temperature measurements of the phase-change material and heat transfer fluid.
• Thermal power, storage capacity and overall efficiency are discussed.
• Up to 31% of dead volume in the center and base of the tank.
• The highest efficiency is reached for low supply temperatures and mass flow rates.
The aim of this study is to characterize a paraffin-based cold storage tank. Novel experimental results are presented for this system which combines a significant amount of paraffin (1450 kg) immersed around 18 spiral-shaped coils disposed in counter-current flow. The paraffin has a phase-change temperature in the range 4–8 °C as measured by a 3-layer calorimeter. Different tests have been carried out with a constant mass flow rate and supply temperature. Around 31% of the paraffin has hardly any contact with the coils and hereby acts as a dead mass. The results show the importance of natural convection within the phase-change-material, particularly during the melting process. The highest efficiency has been achieved for the lowest supply temperatures and mass flow rates of the heat transfer fluid.
Journal: International Journal of Refrigeration - Volume 36, Issue 6, September 2013, Pages 1632–1640