50 grams with all HC's !? I've over 1 kg of R404a and almost 500 gr of R23, it's just enough, hope it doesn't take too much with R14
With AC's pattern, what would you do to get T° < -160°C ? I know that kind of T° isn't reached with classic cascade pattern because of the ridiculous efficiency, and T° under -190°C, LN2 is commonly used, what about that -170°C range ? Here in France there's a company named Findus, they uses a very special tunnel @ -165°C to freeze food, it's running with methane as the last refrigerant, but I haven't been able to get the idea, if it's classic cascade or AC
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