Im currently preparing for my oral assessment for 4th Engr. your videos are very helpful. thank you so much

@CLASS4ORALS

4 ай бұрын

Thanks alot..kindly share and spread this Channel to maximum

@nikhilpatil1333

5 күн бұрын

Kitna orals hova clr

Very good and precise explanation. Appreciate your great effort. One observation though. Normally I have seen unloader solenoids are normally close types. Means the plunger will be pushed down normally if there is no electric signal so that unloader itself is always kept in open position while starting and stopping no matter if there is electric signal or not.

@CLASS4ORALS

Жыл бұрын

Okay..Thanks alot..😊😊😊

Well done, iam a sailing 4th and u have explained it very effectively bro.

@CLASS4ORALS

Жыл бұрын

Glad it helped

The best video on KZread.. Finally understood the concept .. Thanks a lot 🎉

@CLASS4ORALS

Жыл бұрын

Thanks alot for your response 😊

Very, very good explanation. Thank you very much 😊

Just saw your channel for the uploader.I must say this is very impressive.Thank you for sharing

@CLASS4ORALS

2 жыл бұрын

Thank you so much Stephen ukpong for your interest in the channel. 😊👍

In the normal condition, the pin holes connected to the cooler drain are in open condition right?, And when the solenoid valve is activated, the pressure imbalance and 2 valves lift and releases the LP,HP side air pressure. If the pin holes connected to the cooler drain are in open condition ,then also LP and HP air pressures will drain right since both cooler drains(O1,O2) and X,Y connected to air side/pipe ( Correct me if i am wrong ). Then why there is seperate valves for X and Y ?

@BawarchiCouple

7 күн бұрын

Same doubt, if it is continuously draining what is the need of Solenoid Valve to operate?!

Thank you very much! The best explanation i’ve ever seen!

@CLASS4ORALS

2 жыл бұрын

That's wonderful. thanks for your valuable feedback.😊😊

Does the 1st stage or 2nd stage air cooler drain stay open during normal running of compressor

Very nice and good explanation sir .keep in rock🔥🔥

ıts so competence and skıllfull descrıbıng of a coolıng valve explanatıon !!😁😇

Fantastic, beautifully done. Thank you very much. Love your channel.

@CLASS4ORALS

6 ай бұрын

Thanks alot

i Had a simple question , when the compressor is working normal and the unloader is not in use still 5 bar air will go the drain via the internal grooved pipes ?

Wow!

Effective teaching 👏 I’ve been benefiting from your videos prior to an interview

@CLASS4ORALS

Жыл бұрын

Wow..thats wonderful

Excellent explanation, all your videos are fabulous..keep up the good work!!

@CLASS4ORALS

Жыл бұрын

Glad you like them!

Thank you sir for the clear and detailed explanation. Subscribed!

@CLASS4ORALS

Жыл бұрын

Thanks for the sub!

excellent explanation

Appreciate the effort. Bit more clarification needed

@CLASS4ORALS

5 ай бұрын

Thanks

Effective teaching 👏 May Allah bless you ❤❤❤

@CLASS4ORALS

Жыл бұрын

Thanks a million

Best explanation so far!! 👌👌

@CLASS4ORALS

Жыл бұрын

Glad it was helpful!

excellent video. thank you.

@CLASS4ORALS

2 жыл бұрын

Thanks Sambit dash.😊👍

Very nice.

How come air pressure of 5bar(X) and 30bar(Y) is available to unloader during STARTING of compressor is?? If the compressor is not running, pressure would be zero only to unloader, isn't it?

@CLASS4ORALS

Жыл бұрын

Before starting, the pressure starts to build up, that time 5 bar and 30 bar production will act on unloader

thanks for the explaination sir!! as there is no single explaination regarding unloader on yt but you saved us. you have gained one more subscriber. i have one doubt. as you mentioned compressor is driven by 3 phase induction motor so which motor is used on ship for fuel oil and lube oil handling? also which motor is used to run centrifugal pump on ship? plz answer this. thank you.

@CLASS4ORALS

2 жыл бұрын

Thank you so much Yash More for your keen interest in the channel and in this video. I create content which is not easily available or in books unlike just copying and pasting the content. I will send the answers to your doubts soon regarding motors shortly.

@yashmore8367

2 жыл бұрын

@@CLASS4ORALS yes completely agreed. Okay sir. I have an interview scheduled at the end of February. so it's my kind request to answer those questions as soon as possible.

@CLASS4ORALS

2 жыл бұрын

Surely Will send.👍 till then please refer the Pump manuals of your respective ship, that contains the Type of motor used.

@yashmore8367

2 жыл бұрын

@@CLASS4ORALS sir I don't have sponsorship yet. I have sponsorship interview scheduled at the end of month not MEO class IV interview.

What about lifting of suction valve where can we see this mechabism

Well explained 👍

@CLASS4ORALS

2 жыл бұрын

Thank you so much Aniket

Real effort, respect bro.

@CLASS4ORALS

Жыл бұрын

Thanks alot adilkhan

Thanks a lot for this sir..!

@CLASS4ORALS

2 жыл бұрын

Most Welcome Karun Monnappa..👍👍

very useful video

@CLASS4ORALS

2 жыл бұрын

Thanks alot

Good effort bro

@CLASS4ORALS

2 жыл бұрын

Thank you so much

Thank you all the efforts sir.😍 Plx let me download all the videos from your channel.

@CLASS4ORALS

Жыл бұрын

You may use Savefromnet website

I didn't understand please make another video with very clear explanation.

@CLASS4ORALS

Жыл бұрын

Which part?

❤

Sir you said that unloader releases drain and the compressed air. Unloader is keep on releasing air or drain continuosly then how compression takes place.

@CLASS4ORALS

Жыл бұрын

The air and drain release quantity is infinitesimally small and negligible. CONSIDER it Next to NIL So it has no Major effect on Unloader operation.

Sir from the video , the air is drained in both the case ie during the solenoid valves actuation and also when it is not actuated , so to run the compressor so to actually compress air we need to disconnect the unloader??

@CLASS4ORALS

2 жыл бұрын

Yes, during operation of Unloader initially for 10 sec, or after 20 min for 10 sec, now unloader needs to be deactivated. the Compressor is now under Compression mode. Hence unloader is not actuated that time of general compression. Also very tiny amount of air/water from Intercooler and aftercooler keeps on draining via Unloader, through the machined bore,(even if Unloader is not operational) that draining is not going to affect the performance of compression much.

@CLASS4ORALS

2 жыл бұрын

I hope that clears your doubt.

great explanation sir

@CLASS4ORALS

Жыл бұрын

Thanks

Bro can you please make the video of Unloader for Refrigeration compressor too. This is too mmd question for eto

@CLASS4ORALS

Жыл бұрын

Okay.. so far I have not worked on that. I will try to make soon for that.keep watching. Thanks for your trust in channel

Sorry sir, what kind or what model of unloader you are describing in this video? In my experience, the unloading process works only when the solenoid valve was not energized. It is during starting, every 15 mins of continuous running and while the compressor is not running or stop. While the compressor is running in normal operation, the solenoid valve was constantly energized and it pushes down the pilot valve to cover the tiny hole or opening as you describe. As the tiny openings are closed, the pilot air coming from first stage pushes and close the L.P. valve and pilot air from second stage closes the H.P. valve, Those were trapped and not continuously going to atmosphere to hold the valves in closed position. When the solenoid vave was not energized during unloading process. the pilot valve was push back by the spring to open the tiny opening. This tiny openings when open was use as a passage by the air closing the L.P. valve. When this air scapes, the L.P. Valve and H.P. Valve can now push upward by the drain coming form first and second stage. And then the valves are open for unloading process.

@CLASS4ORALS

Жыл бұрын

This is not a particular model or maker Unloader. This is what being taught to mt Seniors and in Academy. You r right the tiny holes are mostly trapped and not leaking to atmosphere, but some models do not completely trap holes.. Good observation 👍

If solenoid recieves electrical to open the onloader then why u open every time aircooler drain

if the air taken at x is after the intercooler how is the pressure in the compressor unloaded?

😍😍😍

@CLASS4ORALS

2 жыл бұрын

👍👍😊

Good job brother .. keep it up

@CLASS4ORALS

2 жыл бұрын

Thank you so much

Just one correction, when the plungers are closing the orifices, the pressure above the LP and HP pistons are not 0 bar. They are at atmospheric pressure, which is almost equal to 1 bar.

@CLASS4ORALS

Жыл бұрын

Thanks for the deep observation 👍

@marineengineering9833

11 ай бұрын

​

Sir please hindi main video dijie na🙏

@CLASS4ORALS

Жыл бұрын

Video worldwide dekhte h sab isliye Hindi mein sab nhi samajh payenge

Does this concept works for chiller system ?

@CLASS4ORALS

Жыл бұрын

I have made this for Air Compressors.

brother, how do i know my compressor unloader is working or not

@CLASS4ORALS

Жыл бұрын

You can see the low pressure on HP and LP gauge initially, if you see this and rising after 10 15 sec, then ur unloader is working good..if not, it is faulty

Why after every 20 minutes unloaded works for 10-15 seconds?

@CLASS4ORALS

2 жыл бұрын

Because it is necessary for removal of any moisture accumulation in the compression chamber and in Intercooler and Aftercooler Drain, else it may cause difficulty in Effective compression. Also risk of failure bcs Moisture and water is imcompressible. Hence depending on maker, on an avg there is 10 seconds of unloading every 20 minutes of compression.

@thealphahun9800

2 жыл бұрын

@@CLASS4ORALS but moisture is already draining through the pin hole then what is the need to drain again every 20 mins

@thealphahun9800

2 жыл бұрын

@@CLASS4ORALS and the x and Y ports r not connected to the cooler drains then how will they drain the moisture? TIA (:

can u speak me what is x and y?

@CLASS4ORALS

Жыл бұрын

Watch full video