Engine Jacket Water Cooling System

#shipengine #jacketcooling #marineengine #enginecooling
The Main engine jacket water cooling system is a critical part of an efficient marine engine operation. The machinery systems fitted onboard ships are designed to work with maximum efficiency and run for long hours. The most common and maximum energy loss from machinery is in the form of heat energy. This loss of heat energy in ship's engine has to be reduced or carried away by the main engine cooling system, such as jacket cooling water system in ship, to avoid malfunctioning or breakdown of the machinery.
No machinery in the engine room is lead proof and to make up the loss of water in the system due to leakages, there is a header tank, which automatically makes up any deficiency. The header tank is relatively small and located at a height in the engine room. It is supported by a deaerator tank which removes any pressure fluctuation to avoid affecting the Jacket water pump.
The Header tank is small and provided with a low-level alarm. In the case of heavy or major leakage, it will be easy to detect the same as the sudden loss of water will sound the low-level alarm.
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[@TheFantasticmrfox91]

Excellent video. I'm an electrical engineer, studying to be an ETO. This is a great explanation for someone with a limited mechanical background. Very easy to grasp.

[@marineinsight]

We are happy to hear that. Please do share and support 👍🏻

[@yevhenkizenko4285]

Iincredibly intelligible and understandable explanation, half of sailors do not know this!)))

[@marineinsight]

Thank you. Glad to know that the video explanation is useful for fellow seafarers. Please do share and support 👍🏻

[@jennyflores9480]

Thank you for the knowledge you share sir..Salute.

[@phyowin5288]

very clear message and effective video easy to understand....million thanks

[@rcasturi55]

Great visual explanation.

[@SanjayKashyap-vu3mf]

Kandungan video sangat baik, tahniah

[@sumartyakundu6032]

Easy to understand thanks a lot ❤️ Please make such videos of engine.

[@marineinsight]

Sure.

[@micaiahben8983]

best explanation of this system

[@user-bq9zu4nw5w]

i find the best channel, for junior seaman's! T.y. guy's. Очень познавательно для начинающих работать в микс экипажах! подтянуть технический язык то что надо

[@marineinsight]

Glad you liked it.

[@srirambalath9152]

Excellent and very informative video!! It would have been better if an explanation on alarms and trips in this system was also done!! Thank you!!

[@marineinsight]

Thank you for your comment. Noted the suggestions.

[@NN92455]

Thank you. Very informative video.👍

[@marineinsight]

Hey Nithin. Glad you liked it. Please do share and support 👍🏻

[@warror-q5p]

god bless you good man

[@raphaelremetre1206]

Very well explained, more power Indians ❤️❤️❤️❤️❤️

[@user-wu1xn7qf2l]

Clear explanation

[@marineinsight]

Keep watching

[@400LB_GORILLA]

great video

[@nibinjafferantony5584]

Good explanation.. could u upload a video of reversing of 2 stroke diesel engine????

[@marineinsight]

@Nibin. Thank you. Sure, we will pass the suggestion to our team.

[@mrsaneeshvs]

Very helpful to me 👍🙏🙏🙏thank you

[@marineinsight]

Thank you

[@poogalanthivinodh2685]

Thank you it very helpful for me

[@marineinsight]

Awesome. Glad you found it useful. Please do share and support 👍

[@any_one4255]

Perfect explanation

[@marineinsight]

Thank you Anuj. Please do share and support 👍🏻

[@miltzy7452]

this always can help cadets

[@abdullahalsaif8475]

Thanks a lot sir

[@marineinsight]

Most welcome

[@user-jn5xe2nv6b]

The cooling water outlet is fitted with an orifice ...can you please explain

[@roshansomawardana8640]

Great video 💪

[@marineinsight]

Glad you liked it!

[@onzegen5244]

Please add subtitle sir for better understanding. Its a nice video.

[@marineinsight]

Noted with thanks

[@thefictionaluniverse8923]

Thanks👍

[@marineinsight]

Thank you too

[@omarbakr9838]

Very nice, keep it up 👌

[@marineinsight]

Thank you Omar. Please do share and support 👍🏻

[@TejasChavan3041]

Excellent

[@fishnchill13]

Thanks very good explanation...i would like to ask you a question about the pumps..you said that when the engine is stoped we close jacket pump and start fw circ pump ...this procedure is in all merchant ships ? I'm gonna embark on a bulk carrier and i would like to know. There are always circ pumps for that reason or in some ships we use only jacket pumps ?? I will appreciate your answer thanks !!!

[@marineinsight]

All foreign going ships are fitted with small circulation pump. This is done to reduce the power consumption (as jacket water will consume more power) and hence the fuel consumption of the auxiliary engine.

[@shahrozfareed9901]

@@marineinsight agreed.

[@makinistangmandaragattv5560]

@@marineinsight In addition to that, hence main engine is stop no need much HT pressure for cooling the cylinder liner,head, exhaust valve etc...only to provide heating to prevent thermal shock and prevent jacket cooling water leakage.

[@jonathanadrielrodrigues1636]

Good video. Whats the normal temperature 1. After liner 2. After cylinder head 3. After exhaust valve

[@steffandall5785]

That depends on the pressure in the pipes. The higher the pressure the the higher boiling point. 1. After Liner can for some engines be up to 130degC 2. After Cylinder Head can for som engines be up to 85degC 3. Depends on the engine load - if the load is high the temeprature is low. Hope it helped.

[@jonathanadrielrodrigues1636]

@@steffandall5785 Thank you 👍🙂

[@dimaorlov5387]

Thanks for the explanation, this lesson was quite usefull for me, cuz for now i'm a cadet. Have you a video about HVAC system and sewage treatment plant?

[@deepaneshk3672]

Can you please put video about reversing of engine(2&4 stroke)

[@marineinsight]

Sure. We will pass your suggestion to the team. 👍

[@vijhon9]

Thanks. Just wondering what chemical is used to treat the jacket water. Kindly throw some light. Ty

[@MelleLN90]

Thank you very much for this video. Do you know the flow off seawater necessary to cool down engine?

[@anilkumar7424]

So nice explanation..but forgot about turbocharger cooling

[@marineinsight]

Thank you for the comment.

[@makinistangmandaragattv5560]

TC is cooled by system oil...

[@piyushsharma9760]

how can de aerator tank help in troubleshooting of the main engine problem ?

[@md.almamunkazi5601]

why 2 element control system is used in main engine jacket water cooling system?

[@kevinmascarenhas9175]

If possible please do a video on the bunkering process.

[@marineinsight]

Please check this video kzbin.info/www/bejne/Y6OoqZuto71rptU

[@kevinmascarenhas9175]

@@marineinsight nice, thank you sir

[@milindbhange5962]

I watch your vedio it was so easy to understand and brief. Make vedio on feed water generator

[@milindbhange5962]

And aslo marpol rule s

[@marineinsight]

Please check this - kzbin.info/www/bejne/qqndmoitjcljma8

[@marineinsight]

You can find multiple article on MARPOL - www.marineinsight.com/search/?q=MARPOL

[@Ivra-tk9iq]

Nice👍

[@marineinsight]

Thank you. 👍🏻

[@duraipandian1993]

you would have mentioned about LT water and HT water in this jcw system,,master controller and slave controller.. Anyway i appreciate your work

[@marineinsight]

Thank you for commenting

[@ArjunSharma-yf6xk]

What chemicals are usually used to test the jacket cooling water Can you name them??

[@marineinsight]

There are different companies who provide chemcals under their brand name. However, following composition remains the same - Nitrite, carboxylates, Nitrite boarte, nitrite polymers

[@anuragtyagi8779]

Unitor is name of such company which provides chemicals for this use .

[@marineinsight4699]

@@anuragtyagi8779 Correct 👍🏻...another one is Drew.

[@macbaker8434]

Make a video series explaining all the engine parts

[@marineinsight]

Thank you for the suggestion. We do have an ebook on different marine engine components, explaining its function and maintenance. learn.marineinsight.com/eBooks/e-2-stroke-marine-engine-components/

[@f.momentum8535]

Better show in detail a lng reliquifaction plant: what is the main cooling medium, any compander, comressor, electric motor room. Next gas fuel system)))

[@marineinsight]

Noted With thanks.

[@f.momentum8535]

@@marineinsight thank you

[@vijaysingh-tw3uk]

Thanks sir for explain video Plz sir u will making all chapter wise marine diesel engine video upload I hope u hear me sir

[@marineinsight]

Sure we will. Please do check the marine engine playlist for more videos- kzbin.info/aero/PL_mDuIImDS9OfrOelrfKHIAQk-VoFu6KR

[@shoannessecidadeafonso3124]

The above explained cooling is traditional type. As there is no LT & HT system

[@marineinsight]

Yes, this explanation is for open loop system, which is still in use.

[@shoannessecidadeafonso3124]

@@marineinsight I thought this type of system was phased out . Possibility on old ship. Mostly seen closed loop in my seatime...

[@veeravela8783]

Name of the chemical to be added?

[@nibinantony6660]

Make a video on reversing of the engine

[@marineinsight]

Noted. We will pass your suggestion to the team 👍🏻

[@shahrozfareed9901]

@marineinsight, why do we always have a return jacket water connection on bottom of expansion tank always, why not from the top, kindly guide..

[@kryptonian1371]

It is done in order to maintain a positive head. Same reason as to why the water tank in your locality is placed at such a great height.

[@akshaypradhan3584]

With the help of gravity Method

[@makinistangmandaragattv5560]

Also to provide raw water from exp.Tk...

[@abhishekchaudhari8009]

Why jacket water inlet temperature is 80°c

[@paulrenzom.salapare1984]

What is jacket cooling temperature? Thank you☺️

[@stefanjovanovic9450]

40-50C

[@Buckoux]

What happens to the heated "sea water" after it leaves the "Sea Water Cooler"? The heated sea water is expelled back into the sea. As wiki says: "At any given moment there are 50,000 merchant ships crossing the worlds oceans. The heat from the cooling systems of these ships on the oceans of the world is what is really causing climate change, heat wave and drought.

[@anengineer152]

From which metal this jacket is made of?

[@shankaranand1139]

Sir can we use the system without a daerator??..nd what is the principle of deartion?

[@kryptonian1371]

Deaerator is used to remove trapped air bubbles from the circulating water in order to avoid pressure fluctuations (which in turn could cause damage to the pipe lines). So no, it is not advisable to NOT use Deaerator.

[@atulraj3189]

No LT, HT fresh water??

[@albertlositano4721]

thank you! nag hahanap plng ako sa internet knina buti nlng meron. sa PID controller sa cooling system ng main engine meron kayo?

[@marineinsight]

Hi Albert Currently, we do not have any video or article specifically on PID controller. We will suggest the same to our team. 👍🏻

[@Ajaykumar-bl6zd]

Difference between liner and jacket??

[@marineinsight]

Liner is the cylinder which forms the part of combustion chamber in which piston moves. Jacket is a part of entablature, covering the liner to provide cooling water passage 👍🏻

[@jennyflores9480]

Thank you for the knowledge you share sir..Salute.