AS MWD of PET widens, the thermal performance of PET chips is becoming bad. 隨分子量分布加寬切片的熱性能變差。
In addition, the decrease of the annuli gap will yield heat transfer deterioration during flowing in narrow annular channels. 此外,環(huán)縫間隙的減小將導致環(huán)形通道的換熱性能下降。