Designing a refrigerator

[SULTAN]

I am designing a refrigerator and i figured out where all the components are going to fit where. I got a 1/2HP compressor set and it runs on 404a.
How can i determine how much refrigerant I will need to properly run this custom made system.

Any help would be apprecaited. :)

[nike123]

By trial and error, if capillary expansion device, and by subcooling and superheat, if TXV!

[amitsaxena]

Dear,

Let me know the spec. of your eva+cond, then i can tell you approx. how much gas will be required.

Or let me know you ref(F/R) voulme then i can tell you approx.