I seek information as to how do we size the pressurisation unit in a chilled water system including the major components details and their specs.

Go to www.pneumatex.com. You can download the Zoom brochure, which will show you all the long hand calculations. There is also an online calculator called Select P! just input the data and it will provide you with up to 3 solutions. You will also be able to find the contact details for the local specialist if you want to talk in greater detail about your project. These guys are experts in this equipment, and it is all top Swiss quality.