Plastic KETER sheds

[SUNRAY]

Fair enough, but I still don't really understand where the estimates/guesstimates/whatever of pressures you've used have come from. Are they perhaps pressures which you 'know' (or, at least, 'believe') to be the range of pressures used in typical real-world domestic fridges and freezers? As I've said, I personally haven't got a clue about the pressures!

Domestic freezer compressors are commonly capable of 400PSI but that doesn't mean it's the pressure the system is running at as it's a leaky system.

 

[JohnW2]

This is all well beyond my experience but IIUIC there was only one refrigerant available in the early days.

I find it hard to believe that it has ever been possible for one refrigerant to be suitable for all refrigeration purposes

I may be wrong and will happily accept being corrected.

As I keep saying, I really don't know. I think the same is probably true of you, but yiou keep making suggestions and comments which may or may not be correct. If/when I have a bit of time, I might try to do some reading.

Where do you get +20ºC from for chiller temp?

I didn't - the +20°C figures relates to aircon.

 

[JohnW2]

Domestic freezer compressors are commonly capable of 400PSI but that doesn't mean it's the pressure the system is running at as it's a leaky system.

As I keep saying, I really don't know. I think the same is probably true of you, but yiou keep making suggestions and comments which may or may not be correct. If/when I have a bit of time, I might try to do some reading.

 

[SUNRAY]

I find it hard to believe that it has ever been possible for one refrigerant to be suitable for all refrigeration purposes

As I keep saying, I really don't know. I think the same is probably true of you, but yiou keep making suggestions and comments which may or may not be correct. If/when I have a bit of time, I might try to do some reading.

I didn't - the +20°C figures relates to aircon.

Presumably talking about return air temp and where the sensor will be working, the chiller part will be working at closer to freezing and the fan section will be working at a temp not far above that. Pipes between the units have to be well lagged to prevent the condensation forming on them and also to prevent it freezing on them.

 

[JohnW2]

[ I just wrote some nonsense, but realised quickly enough to be able to remove it. I need to do some re-thinking and then will probably try to write something a bit more sensible! ]