Chiller Efficiency Improvements hvac chillers

Chiller Efficiency Improvements. In this video we'll be discussing the different opportunities available to improve the energy efficiency of existing water cooled and air cooled chillers. We'll cover Compressor Retrofit, Compressor VFD, Chilled Water Reset, Condenser water reset, Condenser and Evaporator cleaning, Expansion Valve, Air cooled chiller, condenser fans, Free cooling or Economiser cooling, Chiller and plant sequencing, Controllers and fittings, Cooling tower, Pumps and AHU fan VFD’s.

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Danfoss has a wide portfolio of products to you boost efficiency in whatever
chiller system you’re working with. Their products include compressors, AC
drives, system protectors, heat exchangers, valves, electronics, and
sensors.
They’re committed to helping you build better chillers — from the inside out.

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[EngineeringMindset]

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕

[senthilkumar]

This is one of the best educational channel for engineers. Your explanation along with graphics makes it easier to understand. It is very difficult to picture something in your mind when you have no idea about how it looks like, that is where your video makes a difference. Very practical. Thank you from a sincere engineer

[elliot]

Some great videos Paul. One thing that is not mentioned here is regarding the size of the heat exchanger - because it is sized for the peak load, when running at part loads the flow still goes through the same heat exchanger but at lower velocities. Reduced velocities equate to lower Reynold's numbers (a measure of how turbulent the flow is) - the higher the Reynold's number the better the heat transfer and hence efficiency. If the Reynold's number is low enough the flow is laminar and there is a significant reduction in performance. Hence operating at part loads causes a loss in efficiency as the heat exchanger is essentially oversized. This can also cause the heat exchanger to foul up more quickly as the particles that cause fouling can drop out more easily and stick to the surface of the heat exchanger. The only way to improve this is to have multiple heat exchangers that can be brought online as the load increases - however this is not always an option with space restrictions so the design of the heat exchanger is fundamentally important in that respect.

[daledozerx]

i work for Johnson Controls, i love the videos i tell my guys to check out alot of your vids it helps train alot of these younger guys

[maboto]

hello,
big thanks on all the great videos you post. they are a huge help.
is there an option that you will do a video or a series of videos about
humidifiers and how they work ?

[engineerforengineers]

Sub cooling can be done for both water and air cooled chillers ...for power saving

[MDSHAHID-KHAN]

Your video are really amazing. Can you please a video on chemical dosing for Condenser water & chilled water. your work is highly appreciated.

[suhailaakram]

What are the pros and cons of increasing the chiller's flow rate? by increasing the chiller flow rate, it'll produce more cooling water.

[ioanberende]

Amazing quality and professional explanations,

[german]

Very good report.Thi´s help me so much. Many thanks.👍

[zjeepgozweeln]

Cooling tower fans do not consume a lot of power compared to the chiller compressor(s). I don't like a single condenser water set point (i.e. 80F/27C), because it often makes the chillers work harder unnecessarily, killing your COP. I prefer targeting 5F(3C) above the outside air wet bulb temperature with a 55F(13C) low limit. This strategy works in every climate, dry or humid.

[MalcolmMurray]

Typo @7:16? Full load set point should be 27C/80.6F

[BRWDJP]

Please do a VFD video please . Love your channel keep up the good work

[DecimalZer]

You do amazing videos, thank you!! The animation in your videos, showing the moving lines representing flow, what program are you using?

[DavidHarsant]

is there a video out for setting up danfoss hvac drives especially one that goes into all the settings and software settings? ive seen some but not all of them are that helpful.

[abedalkhatib]

What is the difference in energy savings with using VFD on compressor vs van guides?

[autonable]

Thanks for your videos! Do you have any extra information or videos on how to go about utilizing a chiller sequencer? Is this similar to lead/lag, or can I program the chillers to run at specific loads instead of just on/off.

We have two chillers of different capacities, so each has different efficiencies at different loads.

[yuvarajc]

It's very useful and pls explain the EXV

[abhimat]

What is the difference between free cooling and economiser cooling? Are they just the same...

[jesusomarplascenciafrias]

Please.It explains the loss of efficiency of chillers and other systems due to maintenance factors.