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RAJ Vs KOL Eliminator Match - Team (23.05.18)

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Venue:  Eden Gardens, Kolkata Date & Time: 23rd, May, 07:00 PM  Rajasthan Royals (All Players): Ajinkya Rahane (c), Stuart Binny, Ben Laughlin, Jaydev Unadkat, Sanju Samson, Ish Sodhi, Krishnappa Gowtham, Rahul Tripathi, Shreyas Gopal, Heinrich Klaasen (w), Jofra Archer, Dhawal Kulkarni, Anureet Singh, Ankit Sharma, Dushmantha Chameera, Prashant Chopra, Jatin Saxena, Mahipal Lomror, D Arcy Short, Aryaman Birla, Sudhesan Midhun Kolkata Knight Riders (All Players) : Dinesh Karthik (c), Sunil Narine, Chris Lynn, Robin Uthappa, Nitish Rana, Andre Russell, Shubman Gill, Shivam Mavi, Javon Searles, Prasidh Krishna, Kuldeep Yadav, Rinku Singh, Mitchell Johnson, Tom Curran, Piyush Chawla, Vinay Kumar, Ishank Jaggi, Apoorv Wankhade, Cameron Delport Probable Players RAJASTHAN : Ajinkya Rahane (c), Heinrich Klaasen (w), Stuart Binny, Ben Laughlin, Jaydev Unadkat, Sanju Samson, Ish Sodhi, Krishnappa Gowtham, Rahul Tripathi, Shreyas Gopal, Jofra Archer KOLKATA:   Dine
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Compressor basics

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Compressor station

Compressor stations are used to transfer natural gas from one place to another place. 40 to 100 mile distance is given between every compressor. Inter-cooler  is used to cool gas and separator is used to remove hydrates.

Stages of compressor based on discharge pressure

  • Single stage Compressor, for delivery pressure upto 5 bar.
  • Two stage Compressor, for delivery pressure between 5 to 35 bar
  • Three stage Compressor, for delivery pressure between 35 to 85 bar.

Compressor ratio

Generally, the number of stages depends upon the maximum delivery pressure. Compressors can be single stage or multistage. Normally maximum compression ratio of 5 is realized in single stage compressors. For compression ratio more than 5 the multistage compressors are used.

Why multistage compressor?


As per general gas laws, if the pressure increases temperature also increases. For example : if the exit pressure of compressor is 5 bar in a single acting compressor, the compressor air temperature can rise to over 200 °C and the motor power needed to drive the compressor rises. Therefore single stage compressors are not used for high pressures. Multistage compressors are used when high pressures are required, because better cooling between stages can effectively increase the efficiency and reduce the input power requirements.

Single stage machines compress the air to pressure of about 6 bars and in exceptional cases to 10 bars, two stage machines normally discharge pressure up to 15 bars. Discharge pressures in the range of 250 bars can be obtained with high pressure reciprocating compressor of three and four stages.

In single stage compressor, entire compression of air takes place in single stroke of the piston. In multi stage compressor, compression takes in stages. For maximum compressor efficiency, it is desirable to cool air after one stage using inter- stage cooler. In two stage compressor, initial compression takes place in the low pressure cylinder. Air from this stage (low pressure cylinder) is passed through the inter cooler to reduce the temperature. Then the cooled air is compressed in the high pressure cylinder.




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