Chiller - Cooling Capacity Control

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In this video we look at how a chillers cooling capacity is controlled using vane guides. We use 3D models and real life examples to help you understand how this part of a chiller works and its role and importance.
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2 июл 2024

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Комментарии : 66

@EngineeringMindset 7 лет назад

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

@bhampresson 7 лет назад

Great job on this video! really needed this to understand more!

@masterchef6694 7 лет назад

thanks a lot. finally I understood what capacity modulation is. very informative thanks.

@hvinceac9211 7 лет назад

Great job! thank you for the lesson.

@amjadtt8410 7 лет назад

Thank you for your outstanding explanation it was useful indeed I'm making service to one of this type of chillers

@user-gc6bj4zx3p 3 года назад

Thank you for this video, clear and informative.

@MrSabram07 7 лет назад

outstanding, very easy to understand, thanks

@kavehsalimian 7 лет назад

Great videos man, thanks

@crisantovazquezalmeida1851 3 года назад

amazing, you explain everything so good. thanks

@jessicaxinshijiamachinery2593 Месяц назад

Very professional video, thank you for sharing

@danielbartolome8807 2 года назад

Thanks for sharing this video very helpful

@generalb.m.s15 2 года назад

Many thanks to you mate, that was great..

@Chemoholic_Z 2 года назад

Thank you

@pravdomirdobrev4850 6 лет назад

Very well explained! Your videos are very good quality. Keep the good work going.

@chamilanawaratne6629 4 года назад

Many thanks for sharing your knowledge with us. In here your talking about centrifugal compressor , so in screw type compressor what is the capacity control method?

@mustafa94602 5 лет назад

Can you please explain for an example how do we control the piston compressor's capacity? Your videos are very useful. Thanks ❤️❤️

@AKK105 20 дней назад

A very informative and detailed video. Thank you for sharing. Can you recommend a textbook for chiller maintenance and repairing?

@dimasaja39 7 лет назад

Thanks for the video...I REALLY DO APPRECIATE IT.. am still waiting for the next another video form this chanel...I HOPE it would be all about the wiring diagram which is controlling the system in its sequences,thank you so much.

@EngineeringMindset 7 лет назад

Hi Dimas, it;s coming soon don't worry. Glad to hear you enjoy the videos and they are helping you.

@danielmurray2960 Год назад

Really love the content ❤. I’m wondering what qualifications do you need to become a chiller tech

@khansokha4097 Месяц назад

Bigger thinks for your VDO...!

@RajeshYadav-be7ds 4 года назад

Thanks a great

@Saqibkhan-om8en Год назад

Very knowledgeable Sir plz share one clip about high compressor lift alarm in centrifugal compression system.

@ae6010 2 года назад

Great ❤️❤️❤️

@abdulahadsm7710 7 месяцев назад

Hi, Paul this is Abdul ahad from Pakistan . I am working on a Johnson control Yz centrifugal chiller. Watching your videos and I want to say that you have done an excellent work. Thanks alot. Help me clear the concept please. When Vane guide control the flow of refrigerant by throwing a refrigerant to an angle it decrease the kinetic energy, so does it also means the refrigerant entering to condenser though discharge line has low temp due to this?

@michaelpatrick6950 3 года назад

IGVs impart a pressure drop in the refrigerant loop lowering its density. The compressor is a volumetric device so now each unit volume of refrigerant has less mass. The evaporator is a mass device so there is less mass flow from the restricted inlet thus less capacity. The IGVs also pre-swirl the refrigerant thus keeping the compressor on its curve. The compressor generates constant compression ratio at constant speed so the outlet pressure is proportionally lower due to lower inlet pressure. Capacity has nothing to do with refrigerant angle of incidence but stability does. A simple butterfly valve could be used but they impart too much turbulence at low opening and don’t give the range of IGVs because of their flow characteristics.

@jfasjfas 7 лет назад

i see , thank for the info, so vsd similar to inverter, vane guard to vrf

@EngineeringMindset 4 года назад

VFD Video is now live! here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yEPe7RDtkgo.html

@EngineeringMindset 2 года назад

New VRF unit video here:➡️ ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4i1XgcP1tmw.html

@ae6010 2 года назад

Keep going please

@altamimi2008 6 лет назад

I see at the end of the video, you've used kind of chiller simulation program, may I know the name or link of this program please?

@krishnaprasanth5679 4 года назад

Pls explain capacity control of screw chillers

@MC-yx2gn 3 года назад

Just curious as to why the induction motor housing would be insulated. Wouldn’t you want to bleed off as much heat from that motor as possible? Thanks

@sadanscraft661 7 лет назад

Thankc for the support....could you please tell me what is the use of induction Moter installed with the compressor unit????

@EngineeringMindset 7 лет назад

Hey Devid, the motor rotates the impeller in the compressor, this moves the refrigerant around the system. We will do a video soon on the motor, but for now you can see inside a motor and the compressor in this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PT0UIqAGacg.html

@carlosduran5356 6 лет назад

Hey thanks for this great videos. Question aren this temperature sensors usually located in a well or they need to be in direct contact with the water, refrigerant or oil?

@EngineeringMindset 6 лет назад

Hey Jaylenne. Refrigerant sensors tend to sit on the pipe wall externally with insulation around them, water sensors will sit inside the pipe in a well but you will come across externally mounted ones.

@holmanyusedciprianoliveros8935 6 лет назад

What happens if the day is cold, from the controller can I raise the cold generation range, other than 6 ° C but 12 ° C? This directly affects the flow of refrigerant that will allow the passage to the expansion valve by means of the thermal valve that is in the suction line towards the compressor, is it correct? How can I calculate how much coolant is required to cool a degree of temperature.

@gaoqifen 2 года назад

How about VSD centrifugal compressor? In that case do they also have guide vane? And which is a priority to control? VSD speed or vane opening?

@EngineeringMindset 2 года назад

Please watch our turbocor chiller video

@jakeking8748 4 года назад

How does the vane control work in tandem with the expansion valve? The expansion valve can also be allowed to open only as much as required, right?

@movax20h 3 года назад

Usually they will work independent. If due to more cooling demand the motor and impeler are spinning faster, or vanes are opened by control system, the expansion valve (be it hydraulic or electric) will open or close to maintain the proper suction line temperature, so it will follow indirectly the control, but usually will not be operated directly. Some more advanced systems will operate electronic expansions valves in tandem, and also be able to diagnose issues, if their position is not what is expected.

@str8kronic Год назад

Isn't this very similar to an expansion valve ? Would this drop the pressure as well? Even though the vapor should already be at a low pressure coming from the evap? Why can't we use an expansion valve for capacity control?

@masterchef6694 7 лет назад

on what parameter does the guide vanes operate? evaporator refrigerant pressure or leaving chilled water temperature?

@EngineeringMindset 7 лет назад

Typically it will operate from the water temperature

@arjunbirdi7539 Год назад

It actually founded useful even but I know the 3D dimension of the compressor to draw, labels and creativity because it's founded difficult to understand about the name of the labels and demonstrations for my work experiences.

@ractech4018 5 лет назад

What compresser efficiency

@lucasbelosantos7501 7 лет назад

I thought the cooling capacity was controlled by the expansion valve, as you explained in a previous video. Does it a work in a combination of the expansion valve and the compressor?

@EngineeringMindset 6 лет назад

For centrifugal chillers yes. You might like this new video on expansion valves ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-oSLOHCOw3yg.html

@actionwoman2477 2 года назад

superrrr

@mostafam9420 Год назад

Guide vane or Inlet guide vane

@IceyJunior 5 лет назад

what do you meant by max A of motor to protect it ?

@EngineeringMindset 5 лет назад

motors are rated for a certain amount of current, if they exceed this they will become too hot and melt their insulation so they are rated and usually have a thermal cut out which cuts power if it reaches too hot or too much current flow

@user-jx2lu8ru2v Месяц назад

My screw chiller 100 ton but cooling load only 35 ton can i unload screw chiller to 50% and reduce flow rate of chilled and condenser water

@hvac2157 Год назад

Guide vane opening depands on which factor.... Mean our load... Suppose our chilled water is ²5 degree celsius but guide vane is opening Only 20% how we increase it.... By making other parameters i favour of it

@masterchef6694 7 лет назад

could you tell me what information I am I supposed to understand from the rated load apms?

@EngineeringMindset 7 лет назад

RLA is the rated load amps, the maximum your chiller should pull. The run load amps should be less than this and will vary with the cooling load of the chiller.

@aircooledtx 7 лет назад

Rated load amps is the amount of current measured when device is running,Full load amps is Max that the device can pull, if amps pass that mark and no adjustment can be made, then device needs to be tested to insure it will continue to produce design performance.

@masterchef6694 7 лет назад

thanks

@arjunbirdi7539 Год назад

How to do this about the experiment?

@imhotep1613 7 лет назад

I think you should have mentioned that the hot gas leaves first of all the compressor heads up to the cooling tower (your red color line at 32c) cools down them come back as subcooled into the evaporator then leaves the evaporator heading to the AHU ....

@EngineeringMindset 7 лет назад

This type of chiller doesn't send refrigerant to the cooling tower or AHU. The refrigerant always stays in the chiller, only the condenser water goes to the cooling tower, and only the chilled water goes to the AHU's. The condenser water is completely separate from the chilled water. Only the refrigerant moves around the inside of the chiller between the two circuits.

@imhotep1613 7 лет назад

The Engineering Mindset ok. So that means the refrigerant ( head pressure) from the compressor goes into the Condenser then from the Condenser it condenses to finally send the liquid to the cooling tower then comes back at at lower temp. into the Condenser. From now it'll leave the Condenser once again to go into the evaporator then the evaporator will send out chilled water to the AHU . Am I right .loll

@EngineeringMindset 7 лет назад

Almost but not quite. So the refrigerant gas condenses into a liquid in the "condenser" of the chiller, it then moves to the expansion valve and then into the evaporator before getting sucked back into the compressor and pushed into the condenser again to repeat the process. The refrigerant (gas or liquid) remains completely separated from the water which flows in the condenser water loop or the chilled water loop. Have a watch of the other videos on chillers before moving onto these more advanced ones. Make notes and sketches along the way to help you understand it. Chiller basics part 1 - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0rzQhSXVq60.html Chiller basics part 2 - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3ZpE3vCjNqM.html Compressor - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PT0UIqAGacg.html Evaporator - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-W3w7FpX9j9k.html

@imhotep1613 7 лет назад

The Engineering Mindset thank you. Am gonna watch them. It seems like I was getting confused between the chillers system and the refrigeration system

@yokeleetan8525 3 года назад

the video should not be describing chill and condensor water layout. instead it should combine vane guide and hot gas bypass. also show compressor surge graph and when hot gas bypass is required.