Compressor Capacity

I'd look at the owners manual or the nameplate of the compressor.

As a last resort, I'd go to the manufacturer's web site and look up the model number of the unit.

The information you provide is useless.

Welcome to CR4.

Very rough guess of 4,000 Btu/h (± ~2,000).

To pin it down closer, do you have the compressor manufacturer and model number, or at least the wattage?

Hi again ,

I jaust want to know how can i design and choose the right capacity of the compressor befor manufacture the refrigerator, if i want to make it by using the last informations .

"how can i design and choose the right capacity of the compressor befor manufacture the refrigerator"

Designing implies that you do the work. If we do it for you, you have not designed anything. You have just copied Tornado's work. Many many factors must be considered before manufacturing can start. In order to design and choose, you must first have the education and experience to perform the calculations that are required.

Good luck.

I thought you were trying to estimate an existing fridge rather than design one.

Some things to account for are:

1. Heat transmission from outside to inside through the chosen insulation. Q = A(TD)/R.
2. Air infiltration when door is occasionally opened. Q = K W H^1.5 t.
3. Heat load from warm product. Q = ΔT m (specific heat).
4. Light bulb. Q = 3.41 (watts) t. (Probably negligible.)
5. Respiration of product (fruits and vegetables). (Probably negligible, but it is a factor in warehouses.)

Depending on your locale, this may be expressed in Btu/h or watts. Then you go to a compressor catalog and select a matching unit from the given ratings.