Why Exhaust Hood Temperature Increase During Turbine Rolling? What is Churning Effect in Turbine?

Hello friends,
"Power plant discussion" welcome to all of you my friend to this channel, my name is chandan pathak, I have 10 years of experience in power plant operation field I have created this channel only for sharing knowledge about power plant operation and maintenance, for this I shall provide series of lecture on the various topic of power plant in which theoretical, practical and mathematical concepts are included.
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Thanks to all of you for connecting me.

[@ramsinghpardeshi1170]

बहोत खूब समझाया धन्यवाद प्रणाम असो 🙏🙏

[@ajitdalvi5426]

Nice information.

[@PowerPlantDiscussion]

Thank you so much

[@AbdulRauf-qd9pe]

Good. Thanks once more

[@PowerPlantDiscussion]

Most welcome ♥️

[@mhannanhaider1410]

Cool sir

[@PowerPlantDiscussion]

Thanks dear

[@shokeenchoudhary6253]

Very good sir g

[@PowerPlantDiscussion]

Thanks a lot dear

[@ashokawasthi2959]

Super Super video Sir 👍👍👍

[@PowerPlantDiscussion]

Thanks a lot dear

[@sadashivkhatavkar936]

Good explanation and needful..

[@PowerPlantDiscussion]

Thanks a lot

[@mohitgautam2965]

Thank a lot....for this discussion..

[@PowerPlantDiscussion]

Most welcome ♥️

[@James-brayton]

Good support thanks for sharing..just one thing to comment:
On the Condenser drawing, "Raptur disc should be written "Rupture Disk"
Salam Alikoum!

[@PowerPlantDiscussion]

Thanks for pointing this error

[@ameeranna5030]

Thank you sir for sharing your knowledge

[@PowerPlantDiscussion]

Most welcome dear

[@shilpdhande4340]

One of our turbines' exhaust hood temp rises and vaccum drops significantly upon going more than 70% of its rated load. I guess it needs shutdown (could be the same reason i.e. deposition on blades responsible for such behaviour).
Great video!

[@shailendrajadon3599]

Good evening sir.. Well explain sir...

[@PowerPlantDiscussion]

Thanks a lot dear

[@viswathsatheesh6845]

Very useful and informative video....

[@PowerPlantDiscussion]

Thank you so much

[@mohsinkhalil2150]

thanks for knowlege full videos

[@PowerPlantDiscussion]

Most welcome🎉

[@powerplantatoz5452]

Sir Boiler ka bhi topic cover kigiaree, Turbine ka topic bahut hi excellent hai. Thanks

[@PowerPlantDiscussion]

Sure dear Very soon I'll start making video towards boiler side

[@rajeshkumarorg]

Good

[@sandip7780]

Very informative 👍

[@PowerPlantDiscussion]

Thank you so much

[@souravde6322]

Very nicely explained sir

[@narendratiwari1297]

Nicely explained !

[@PowerPlantDiscussion]

Thanks a lot

[@worldinstrumentationengineer]

Excellent🙏🙏

[@jitendrasrivastava1190]

Great explanation

[@qammarfarooq7186]

Very inspiring.

[@surajpanda5615]

Good explanation......Good teaching skill also....Nice....Keep it up bro...

[@PowerPlantDiscussion]

Thank you so much

[@sumitvandhe6950]

Very nice. 👍 well explain 👌🙏

[@uttamdewangan5725]

Good information...

[@sivakumarsubbiah7011]

sir please make video for thermal power plant black out condition what action to be taken

[@PowerPlantDiscussion]

Sure dear Very soon I'll make

[@vvkshukla]

Ak no. Sr

[@PowerPlantDiscussion]

Thanks dear

[@vivekbhardwaj9509]

Excellent

[@ajitdalvi5426]

Happy Diwali , God bless you...

[@PowerPlantDiscussion]

Thank you so much
Happy Diwali

[@abhishekupadhyay5093]

Very good 🙂

[@sidhusingha3960]

This is very important topic sir.Sir plz make a video on HP bypass oil system.

[@PowerPlantDiscussion]

Sure dear I'll make

[@Rit2Fit]

Excellent brother

[@amitthakur4249]

Thank u sir. knowledgefull video.
Sir .can u tell why exhaust hood temperature increases during low load running ??

[@PowerPlantDiscussion]

Exhaust temperature increase due to not proper utilisation of steam energy, because inlet temperature whole time remain same so slightly tends to increase.

[@dipubehera1718]

Sir turbine ka balacing line ke bare main video kijiye

[@PowerPlantDiscussion]

Dear I have already explained this topic in axial Displacement of Turbine, please watch once my video on axial Displacement of Turbine

[@kameshkumar1119]

Supar sir

[@thakurmanish786]

Thnx sir

[@nitishbhartiya8007]

Hii Sir,
Ye bataye ki hood spray na available ho to exhaust temp kaise control kare.
Plus high vacuum and low vaccum limits dependency parameters and effects on turbine, it's heat rate and efficiency.

[@PowerPlantDiscussion]

By decreasing load means inlet steam energy decrease we can control or by increasing vacuum we can control

[@chittaranjanpradhan1189]

Sir ACC ke bare me thoda bistar se samjha dijiye plz.kaise kam karta hai . dhanyawad

[@PowerPlantDiscussion]

Sure dear Very soon I'll make on this topic

[@SSubinMalayaleesChannel]

👌

[@soni6726]

good evening sir

[@PowerPlantDiscussion]

Thanks dear

[@himmatcharan9375]

Steam turbine me after bearing replacement & cold start "generator front bush bearing" ka temperature ek side ka increase ho raha hai 90 degree tak aur generator ka hi dusre end par temperature 60 hai. Similarly "turbine rear bush bearing ka temperature bhi ek side ka increase ho raha hai 82 degree tak jab ki dusra temperature 55 to 60 degree tak hi ja raha hai. Please respond early.
Reason???

[@srikantprasad6259]

Sir,pls ek video turbine bleed per ek video banaiye

[@mukulmuskan]

sir turbogenrator cooling system ki video de do plz

[@mehfuzalli8600]

Sir kindley requested pls sir afbc boiler kaise dcs se operate kare 1 separate vedio banaye ...pls pls

[@PowerPlantDiscussion]

Sure dear Very soon I'll make

[@powerplantatoz5452]

Boiler ka bhi topic banaeaeee

[@PowerPlantDiscussion]

Sure dear I'll provide

[@savanivivek2413]

on which factor steam turbine exhaust hood direction is select

[@trilochanamohanty6726]

What are solution

[@gauravagrawal4766]

Initally 3000rpm rotation ke liye less steam jate hai aur after synchronisation and high load me jayada ..phir bhi exhaust hood temp nahi badta.kyu..work done me kya hota hai

[@PowerPlantDiscussion]

I have already explained this point in this video please watch once

[@supriyamondal2808]

Increasing of exhaust hood temp does not detoriate vaccum, poor vaccum is one of the reason of increased exhaust hood temp

[@PowerPlantDiscussion]

Very nice

[@rajpoudel132]

Sir steam main line drain line mee kitna class kaa valve lagta hai yeska video banaiye na..

[@PowerPlantDiscussion]

Sure dear I'll make

[@rajpoudel132]

ok sir steam valve trap sabka video banaiyega sir..kitna class kaa lagta hai

[@neerajpokhriyal7958]

Sir journal bearing ka turbine me
Top bottom clearnace kitna hota h or radial ka clearance kitna hota hai journal bering ka

[@sadashivkhatavkar936]

Kindly suggest lower limit of exhaust hood temp & it's effects...

[@PowerPlantDiscussion]

Exhaust hood temperature is inversely proportional to turbine efficiency so ultimately Thermal Power Plant efficiency.

[@abdelrahmanhabeb176]

Very nice
What is the function of rupture disk?

[@rohitwarule4600]

Why LP turbine exhust hood temp increase when turbine shutting time?

[@Er.RamanMehra]

Answer is at 7:50

[@ashutoshchaudhary520]

One thing I want to understand that steam heat is utilised for rolling then exhausted to further system and turbine used to torque transmission to Alternator . so how steam accumulation in last stage if steam exhausted to acc or condenser ,I didn't understood. Please describe me , I have doubt in this .

[@trilochanamohanty6726]

Sir
Minimum load or maximum load CEP O/L temp and exhaust temp very 0.5 to 2.5 high temp.what are reasion.

[@PowerPlantDiscussion]

Dear if condensate temperature is lower than exhaust temperature, it's good for Condenser, as we know here latent heat is rejected so temperature should be equal but so much difference in temperature doesn't create any problem

[@tabrezmirzakhan8184]

Respected sir
Hp demand pressure in steam turbine
Samjha dijiye plz

[@batmanbhaiya5875]

कृपया एक वीडियो इस पर भी बनाये की टरबाइन में लोड बढ़ाने पर RPM क्यों नहीं घटती या फिर बढती है. धन्यवाद🙏

[@kundangoswami4722]

why exhaust temperature increase while condensate flow zero in running condition.?

[@purushottamverma394]

टरबाइन फील्ड से संबंध क्वेश्चन आंसर का वीडियो बनाएं इंटरव्यू में टरबाइन के विषय में क्या क्या पूछा जा सकता है की जानकारी क्वेश्चन आंसर सहित वीडियो बनाएं

[@silentmanqateri]

Kindly Expansion Bellow ka purpose in steam turbine

[@PowerPlantDiscussion]

Sure

[@tarasankarchakraborty1234]

Rpm revolution per min ya rotation per min

[@PowerPlantDiscussion]

Revolution per minute

[@toytechs]

Here it is 110 degree centigrade for Siemens 660 supercritical turbine

[@PowerPlantDiscussion]

Very nice it's depends on Turbine manufacturers design.

[@toytechs]

Bhai knha posted ho

[@marslanyounas.733]

Sir kindly tell me..by increasing exhaust hood temperature...why vaccum drop in condenser..??

[@toytechs]

Because saturation temp increase with pressure

[@PowerPlantDiscussion]

Dear as we know pressure is directly proportional to pressure that's why during increase in exhaust hood temperature absolute pressure inside the Condenser is increased. So, when we convert this absolute pressure in gauge Pressure we seen vacuum drops

[@shubhamdwivedi73]

Sir 4.72 MW ki turbine hai,usme bahut jldi exhaust ka temp badne lagta hai , kya karan ho skta hai

[@tasitmandal2933]

Turbine aliment ditels

[@udaysahi1003]

Turbine vibration rieseon

[@VikashSingh-zm4mn]

Kitna steam exhaust hota hai turbine se

[@PowerPlantDiscussion]

Bleed steam ko subtract kr dijiye baki sara exhaust hoga

[@tasitmandal2933]

Terminal I Matka detail

[@vivekanandsahu7005]

Full load me exhaust temp bdega to hood spre de skte hai kya sir

[@PowerPlantDiscussion]

Sure dear we can use

[@manoharsinghyadav789]

Apna sir mob number

[@durgeshpathak6586]

Very informative 👍