بررسي عملكرد خنك كنندگي جعبه عايق با مواد تغيير فاز دهنده براي كاربرد در ذخيره سازي سرد

Maintaining the quality an‎d safety of temperature-sensitive products is a major challenge in the cold chain, as temperature fluctuations lead to spoilage an‎d reduced product value. To control temperature an‎d increase thermal stability, the use of insulated boxes containing phase change materials (PCMs) has been proposed as an innovative solution. The present study experimentally investigates the thermal performance of an insulated box incorporating a locally available an‎d cost-effective PCM known as Isorecycle. The main objectives include eva‎luating the effect of PCM quantity, positioning within the box, internal thermal load, an‎d comparison of Isorecycle with glycerol. For this purpose, a series of controlled experiments were conducted, an‎d the data were analyzed based on thermodynamic indicators an‎d thermal stability duration. The findings revealed that using 1.6 liters of Isorecycle PCM significantly enhanced the thermal performance of the box, prolonging the temperature stability period by more than 2971% compared to the case without PCM. Doubling the PCM volume further improved the cooling performance by approximately 43%. Analysis of PCM placement indicated that positioning the PCM bottles at the bottom of the box provided the most effective thermal uniformity an‎d stability. Moreover, increasing the mass of the payload improved performance by around 20%, due to higher overall thermal capacity. A comparative eva‎luation demonstrated that Isorecycle, with its higher latent heat an‎d favorable cyclic stability, outperformed glycerin in both efficiency an‎d economic feasibility.

نسرين اعتصامي

ارجمند مهرباني زين آباد , صفورا كريمي