Advantages and disadvantages of using thermal oil and steam heating in stenter machines
The traditional pillar and important livelihood industry of printing and dyeing in China still faces high energy consumption,which is detrimental to the development of a low-carbon,green,and circular printing and dyeing econ-omy.In response to this situation,the advantages and disadvantages of using thermal oil and steam heating in high-energy consumption equipment such as setting machines are analyzed.A new exhaust heat recovery system and exergy efficiency improvement plan for the setting machine are designed.The results show that the temperature difference between the inlet and outlet of the improved scheme is lower than that of the unimproved scheme,with the minimum temperature difference being 10.8℃and the maximum temperature difference being 30.7℃.Compared to the unimproved scheme,the inlet and outlet temperature differences of the improved scheme were reduced by 3.0℃and 3.6℃,respectively.Additionally,the maximum heat recovery rate of the improved scheme reached 96.12%,and the equipment's exergy efficiency increased from 35.62%to 60.25%.
printing and dyeingsetting machinethermal oilsteamenergy savingexergy efficiency