One of the few channels on chillers that is in depth and informative. Thanks! I have six chillers at work. They are a mystery but I have to work with them.
I really like that u r trying to get young guys interested in large tonnage machines. Im the youngest chiller mechanic that we have and im 40. Our vets are retiring this year
It takes several years of hands on experience to effectively PM a LTC. As for service and troubleshooting that will require even longer period under the watchful eye a qualified technician.
Excellent description of approach. When I was an apprentice, a journeyman tried to tell me the delta T between incoming and leaving water was the approach. I spent a couple years believing that, lol!
Approach can be used on any piece of equipment with a compressor attached to it. I remember when i was in residential.....Lennox didn't put subcooling numbers they used approach. Its a good metric, along with discharge superheat
can i just say thank you I just got the building engineer position and I came from hvac background and I have enough knowledge to be able to get by but I never got to diagnosing the big boy stuff. I hate when I look up explanations and its a video of a tonka truck dropping off and picking up hot/cold water its like dude i want to know exactly what's going on in that tank so i can understand!!!
Great video and commentary on the reasons we pay attention to approach. Particularly found useful your commentary on adjusting water flow rates and the impacts of these adjustments
Very good video. I’d like to add that the reason the approach goes up when the water flow is too low is because the water will go into laminar flow (as opposed to turbulent flow). Laminar flow is when the flow is so low that the water flows down the center of the tubes and is stationary on the tube edge where the heat transfer is taking place. Think of a small stream with very low flow. You’ll see the water and leaves flowing down the center and the water is stagnant on the sides. Turbulent flow has all the water mixing up going through the tubes. In a chiller, when you approach laminar flow, you loose you’re approach very quickly.
Can you list acceptable ranges for each type of approach in fahrenheit please? Condenser approach Evaporator approach Cooling tower approach Thank you 🙏🏼
Approach also tells us how efficient the heat exchanger transfers heat. If the tubes in the water cooled condenser are dirty your approach temperatures will go up and vice versa. Punching the tubes is a good idea, and keeping tower water clean and filtered
One of the tools a chiller plant engineer or operator should always have is a ( PT CHART) pressure and temperature chart. Another tool needed is the pressure drop chart needed to determine flow rate on each chiller barrel. Now a days they have a ultrasonic flow meters on your bldg automated system
Hi , I have 3 "Carrier 5H80" compressors in tandem configuration , besides the oil equalizers on hand hole lower connection , there is also piping on the same hand hole on upper hole which are connected to all 3 compressors , do you know what is it for ?
You briefly mentioned WSHP with co-ax coils. Just curious what information can be gleaned from condenser approach on those systems? My first thought would be that a higher approach would mean that coil was likely starting to get fouled, what would you consider a normal approach on such a system?
I know 0° approach is ideal. But that also depends on the design. Some chillers are designed for a 2° approach. So if u r running 0° you r running the chiller outside of the design of the chiller.
What’s the best approach value on a 80 ton CGAM for the evap EX? I was running 7 degrees the other day. Just getting into chillers recently and your videos have inspired me to take this path.
I have a question, is the chiller the condenser? I'm asking because my teacher was calling it an evaporator but he may have misspoken and I don't want the wrong idea in my head :(
When you talk about Approach as far as a chiller system you should be very specific because each component has his approach there are Different types of Approach: 1. Condenser Approach Temperature 2. Evaporator Approach temperature 3. Cooling tower Approach 4. AHU Approach Temperature
Hello Buddy, we appreciate your clips on the Centrifugal Chillers; Do you have any clips on adjusting the metering valve on the MqQuay / Daikin Centrifugal Chillers. As it seem though you adjust the pilot valve, the main valve, seems to be very lazy in responding, any advice?
I have a 500/ton McQuay Centrifugal Chiller @ 4160 Volts, where the Discharge Superheat is suppose to be 15-18 *F with the liquid injection off @ 100% however, im just getting carryover which is preventing the oil from returning to the Oil sump to maintain the Oil level required. Discharge superheat is falling to 1*F
Try to be more accurate direct and concise about your chiller tutorials, when you use lot of rhetoric it sounds a though you don't know what you're talking about
chilleracademy.com/p/intro-to-chillers
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Best commercial hvac channel on youtube
Thank you
Great Video Holden! I like the last part especially! All the money and recognition in the world means nothing without a family that cares about you.
One of the few channels on chillers that is in depth and informative. Thanks! I have six chillers at work. They are a mystery but I have to work with them.
Im from the UK and I don't see thses very often so thankyou for the video.
Best chiller channel ever
Thank you
I really like that u r trying to get young guys interested in large tonnage machines. Im the youngest chiller mechanic that we have and im 40. Our vets are retiring this year
It takes several years of hands on experience to effectively PM a LTC. As for service and troubleshooting that will require even longer period under the watchful eye a qualified technician.
Excellent description of approach. When I was an apprentice, a journeyman tried to tell me the delta T between incoming and leaving water was the approach. I spent a couple years believing that, lol!
That happens a lot more than it should.
I am having Chief, Assistant Chief's, and Leads tell me it's called "being inverted".
Approach can be used on any piece of equipment with a compressor attached to it. I remember when i was in residential.....Lennox didn't put subcooling numbers they used approach. Its a good metric, along with discharge superheat
Thank you for helping me understand chillers.
Liking your videos btw,wish we had this 30 yrs ago.
A very informative and detailed video. Can you recommend a textbook for chiller maintenance and repairing? Thanks
A SOLID MOMENT IN HISTORY KEEP UP THE GOOD WORK.
can i just say thank you I just got the building engineer position and I came from hvac background and I have enough knowledge to be able to get by but I never got to diagnosing the big boy stuff. I hate when I look up explanations and its a video of a tonka truck dropping off and picking up hot/cold water its like dude i want to know exactly what's going on in that tank so i can understand!!!
Great video and commentary on the reasons we pay attention to approach. Particularly found useful your commentary on adjusting water flow rates and the impacts of these adjustments
Very good video. I’d like to add that the reason the approach goes up when the water flow is too low is because the water will go into laminar flow (as opposed to turbulent flow). Laminar flow is when the flow is so low that the water flows down the center of the tubes and is stationary on the tube edge where the heat transfer is taking place. Think of a small stream with very low flow. You’ll see the water and leaves flowing down the center and the water is stagnant on the sides. Turbulent flow has all the water mixing up going through the tubes. In a chiller, when you approach laminar flow, you loose you’re approach very quickly.
I agree, this has been a very challenging topic of discussion on this channel overtime.
You mean for a Flooded Type Condenser Barrel, right?
Good content brother 🤠
Thank you
Thank-you sir.
Thank you for this video.
Please do mention the unit of Temperature you are working with either °F or °C
Good point, I was using °F
Great video once again!
Really good explanation
Can you list acceptable ranges for each type of approach in fahrenheit please?
Condenser approach
Evaporator approach
Cooling tower approach
Thank you 🙏🏼
Fantastic explanation as usual. Keep up the great work!
Great explanation.
Great video as always
Can you recommend any good chiller classes given by manufacturers to help us build a chillers division?
Approach also tells us how efficient the heat exchanger transfers heat. If the tubes in the water cooled condenser are dirty your approach temperatures will go up and vice versa. Punching the tubes is a good idea, and keeping tower water clean and filtered
Best explain .❤
so gret learning chillers fanda thank s sir
Nice video.
Great knowledge.
Thanks for sharing
. The closer these temperatures are to each other, the more efficient the heat transfer.
I think I was referring to the Approach temperature
Another great great video
Is that bottom on the hybrid the subcooler? Is there a subcooler on the flooded barrel?
Excellent info! Great video! Thank you!
Very good information.
One of the tools a chiller plant engineer or operator should always have is a ( PT CHART) pressure and temperature chart. Another tool needed is the pressure drop chart needed to determine flow rate on each chiller barrel. Now a days they have a ultrasonic flow meters on your bldg automated system
Hi , I have 3 "Carrier 5H80" compressors in tandem configuration , besides the oil equalizers on hand hole lower connection , there is also piping on the same hand hole on upper hole which are connected to all 3 compressors , do you know what is it for ?
Great video,thanks 👍
Nice explanation sir
You briefly mentioned WSHP with co-ax coils. Just curious what information can be gleaned from condenser approach on those systems? My first thought would be that a higher approach would mean that coil was likely starting to get fouled, what would you consider a normal approach on such a system?
The approach will be higher, typically around 10F
Great video 💯💯💯💯💯💯
I know 0° approach is ideal. But that also depends on the design. Some chillers are designed for a 2° approach. So if u r running 0° you r running the chiller outside of the design of the chiller.
Trane centrifugal is 2°
What’s the best approach value on a 80 ton CGAM for the evap EX? I was running 7 degrees the other day. Just getting into chillers recently and your videos have inspired me to take this path.
A typical range is between 3F to 10F
Mmmm sweet knowledge
Approach temperature? In essence the
Chiller approach is the temperature difference between the water and the refrigerant.
Need more details wanted
Are you familiar with Smart air cooled chiller?
I am their water cooled but not air cooled.
I have a question, is the chiller the condenser? I'm asking because my teacher was calling it an evaporator but he may have misspoken and I don't want the wrong idea in my head :(
A chiller will have an evaporator and a condenser. The condenser can be water cooled or air cooled
When you talk about Approach as far as a chiller system you should be very specific because each component has his approach there are Different types of Approach:
1. Condenser Approach Temperature
2. Evaporator Approach temperature
3. Cooling tower Approach
4. AHU Approach Temperature
I specified chiller approach
What the causes if the approach temp of evaporator is negative sensors are New
What machine is this on?
Hello Buddy, we appreciate your clips on the Centrifugal Chillers; Do you have any clips on adjusting the metering valve on the MqQuay / Daikin Centrifugal Chillers. As it seem though you adjust the pilot valve, the main valve, seems to be very lazy in responding, any advice?
I have a 500/ton McQuay Centrifugal Chiller @ 4160 Volts, where the Discharge Superheat is suppose to be 15-18 *F with the liquid injection off @ 100% however, im just getting carryover which is preventing the oil from returning to the Oil sump to maintain the Oil level required. Discharge superheat is falling to 1*F
Deez
Try to be more accurate direct and concise about your chiller tutorials, when you use lot of rhetoric it sounds a though you don't know what you're talking about
U was speaking like u was asleep. So 👎. I m sorry but its real.