Hi can some one suggest how to determine the size of a cooling tower, air compressor and chiller for a medium size injection molding factory.

Hi,Mr.Bibhudatta.The size of air compressor depend of the consumption(robots,vacuum,etc.)Normally you must have a little bit more(the air flow from compressor).The chiller depend from the power of the machines,type of machines(hydraulic/electric),thermoregulators,temperature needed in injection department(in process).Normally,the companies who make these,can make the project.

thanks for ur suggetion

Try and contact SIAD Company from Italy. They will assist you with any of the issues that you have.

HOW TO DETERMINE THE INJECTION TIME,COOLING TIME,FOR A PRODUCT THEORETICALLY,BEFORE THE TRIAL IN INJECTION MOLDING

HOW TO SELECT THE TONNAGE FOR A PARTICULAR MOLD.

HOW TO DETERMINE THE MFI OF MATERIAL FROM THE GRADE.

Injection Time is determined by the type of material, the rate of injection utilized and the aesthetics / quality of the party being produced. The cooling time is determined by the amount of BTU's / Joules that have to be offset to get the part from a liquid ( molten plastic ) state to a solid state that is at a safe handling temperature. The MFI of the material is determine by the rheology of the material, not necessarily from the grade. Tonnage for a particular mold is determined by the projected area of the part, the type of material the part is made from and the type of injection process being used.

A mold filling / cooling computer program can give you a very sound basis for determining the answers to each of these questions.