Design of Vapour Compression Refrigeration Cycle

[RicardoGhent]

Hi!

For our class project, we have to design a system that freezes an amount of water as quick as possible.
The refrigerant is R134a. The compressor is known.
I don't really know how to get started here. How do I choose the evaporator pressure and the superheating, and equally the condensor pressure and subcooling?
We have to use a capillar instead of expansion valve, with given characteristics to find the mass flow rate at a given capillar length/diameter.
Is there someone here who can be a quick guide or who knows any usefull design software?
Thanks a lot!

 

[russ_watters]

Welcome to PF!

What impacts do evaporator pressure and superheat and condenser pressure and subcooling have on the functioning of the refrigerator? The answers to these questions are in your thermo book and you'll need to make an effort to find them answer them yourself in order for us to help you.