Figure 13 shows that cryo pump is cooling pump. It means this pump is cooling, liquefaction and store air, not pumping. Generally, it has 3 processes like condensation, absorption and trap at low temperature. The cooled air or molecules do not have any momentum so it is no possibility to heat any molecules. It means vacuum.
Cryo pump have High emission velocity and high emission capacity so it
Fin Fouling
*팬에 의해 분해된 전체 공기흐름은 핀 관의 더러움에 상관없이 일정하게 남아있다.
*팬 분해압력은 핀 관의 더러움과 상관없이 일정하다.
*팬을 운전시키는 모터 위 에서 암페어 수는 핀 관의 더러움과 상관없이 일정하다.
-관을 더럽히는 외부물질 때문에 공기의
역 흐름이 증가함으
Vacuum Cooling)
진공용 기내에 수분이 많은 물질을 넣고 용기 내를 진공으로 해주면 낮은 온도에서 수분이 증발하며 증발잠열 증발잠열을 뺏어 가는 원리를 이용한다.
5. 전자 냉동법(Thermo Electric Refrgeration)
서로 다른 두 금속을 Ring 모양으로 접속하여 전기를 흐르게 하면 금속의 접합부의 한쪽 끝에
vacuum-packing, canning, preserving in syrup, sugar crystallization, food irradiation, and adding preservatives or inert gases such as carbon dioxide. Other methods that not only help to preserve food, but also add flavor, include pickling, salting, smoking, preserving in syrup or alcohol, sugar crystallization and curing.
As the preceding paragraphs say, many kinds of food preservation technolo
Vacuum and freeze drying processes are used for products with delicate flavours and textures like coffee granules, eggs, prawns and vegetables. The process involves freezing, and evaporating the ice away, under reduced pressure. It is an expensive process but gives a produce which is high in flavour and palatability. Milk may be dried on rollers or by spraying concentrated milk into hot air chamb