Pressure limiting is to keep the suction pressure from going too high, which is a feature not needed or desired in your application. You'll want the pressure to be able to go high since that increases efficiency.
Once you more than double the evaporator capacity, any further improvements in capacity are likely to be well into diminishing returns.
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To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...
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