Trane PCV side winder Surging

[MechanicallyInclined]

Now that you brought up that fact, I could've swore the D-B guy said the HXWC chiller's Discharge Superheat is calculated by Discharge Temperature and Discharge Pressure. And he said Discharge Saturated Temperature. I cod swear to it.

[supertek65]

ROFL!!!!!!!!!!!!!

you can never have enough saturation!!!!!!!!!!!!!

I think I thru an extra saturated in there.

[supertek65]

maybe? I have been wrong before!
I think I was wrong a few times already today!

that being said, would you imagine hot superheated gas would be in contact with liquid?

wouldnt you first need to desuperheat it and start to condense it?

i am pretty sure you just subtract SCT from hot gas line temperature?

Now that you brought up that fact, I could've swore the D-B guy said the HXWC chiller's Discharge Superheat is calculated by Discharge Temperature and Discharge Pressure. And he said Discharge Saturated Temperature. I cod swear to it.

[MechanicallyInclined]

maybe? I have been wrong before!
I think I was wrong a few times already today!

that being said, would you imagine hot superheated gas would be in contact with liquid?

wouldnt you first need to desuperheat it and start to condense it?

i am pretty sure you just subtract SCT from hot gas line temperature?

I believe that particular machine does come with a desuperheating option, a desuperheater and a pump. It's usually to heat domestic hot water. Maybe the "saturated" temperature is obtained right after the desuperheater. Too many bells and whistles. Discharge Line Temperature and Condensing Saturated Temperature is all one should need for that formula!

[tcy612]

Any updates????

[Healey Nut]

Any updates????

Maybe hes still trying to calculate his desuperheated , saturated , subcooled ,intercooled liquid line temperature and he ran out of fingers

[tcy612]

Yeah... Getting waayyyy off track on that one huh... BTW Healey, being the site Trane guru, has Trane actually ever really given or referenced DSH data in their lit. on the PCV's???

[ESS CHILL WATER]

for all the profesionals and guest of the forum on this particular post , in order to read accurate aproach on the unit , the unit must be run at 100% condition then we will read . condenser or evaporator saturated refrigerant temperature less leaving evap or cond temp. , according to the design sheet of the unit we will know the correct aproach of the unit , please let me know if im incorrect .
im agree that the problem with the unit can be condenser fouling ,presence or air , or other that has to be figured .

[henpeck]

Correct on running at full load amps and knowing actual design of machine. I could be wrong, but I've always used the actual refrig. temp. minus the leaving water temp. for the approaches on cooler and condenser.


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[ESS CHILL WATER]

REFRIGERANT SATURATED TEMPERATURE COND/EVAP - LWT EVAP/COND = APROACH THE UNIT RUNNING AT FULL LOAD THEN COMPARE AGAINST DESIGN SHEET OF THE UNIT.

[henpeck]

:-) I can see the big letters a little better.


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[ESS CHILL WATER]

sorry dont misunderstand .

[henpeck]

It's ok.... I won't .. Let you.


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