ReplyNever seen a liquid level s/p on a cetrifugal
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What is the purpose of this setup . How does the machine react as it maintains set point and with different condenser loads ? For example , if you had 3/4 of the barrel full of liquid I would probably expect a higher condenser pressure verses if it was 1/4 full of liquid . Am I even in the ball park with analogy ?
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Never seen a liquid level s/p on a cetrifugal
It's hard to stop a Trane. but I have made one helluva living keeping them going.
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It's on a York ykcf machine . I think it is a variable orifice in the liquid line between the barrels controlled by a actuator. But Im hoping someone else can shine some light on his subject .
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Liquid level keeps the subcooler covered to gain efficiency. As long as you don't start covering condenser tubes with liquid, the level in a condenser barrel doesn't change the pressure in the barrel any more than the amount of liquid in a drum of refrigerant changes the pressure in the drum.Originally Posted by newbe0507
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What is a good set point and why ?
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Actual number for a setpoint depends on whether or not the guy that commissioned the chiller knows his butt from 3rd base. % can vary depending on calibration. The goal is to just keep the subcooler covered. You can calibrate the controller (which I won't get into here) and you should be able to set at 40% +/- and do well.
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thanks Klove
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also see them on turbocore machines
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Klove, thanks a lot for your explanation of this. I've wondered about it myself, and I thought it might have had something to do with not starving the evaporator when you're running cold condenser water. I wish I got more inspection and wrench time with the YKs and YTs, but I only get to play with the beige machines.
Don't pick the fly crap out of the pepper.
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