WHY DO WE USE STEAM? WHY DO WE USE STEAM? Jonathan Beresford BSc Jonathan Beresford BSc (Hons) MSc (Hons) MSc AKVO Ltd AKVO Ltd 07773 335812 07773 335812
Akvo why do we use steam
May 16, 2015
http://www.akvo.co.uk/
This powerpoint is about steam and why we use it.
AKVO can deliver your water & steam system compliance, efficiency & hygiene requirements from our facilities in Chesterfield. Our staff have experience in many environments, notably the food, pharmaceutical, foundry, engineering and building services areas.
Unit 3A Davian Works Storforth Lane Chesterfield Derbyshire S40 2TU
This powerpoint is about steam and why we use it.
AKVO can deliver your water & steam system compliance, efficiency & hygiene requirements from our facilities in Chesterfield. Our staff have experience in many environments, notably the food, pharmaceutical, foundry, engineering and building services areas.
Unit 3A Davian Works Storforth Lane Chesterfield Derbyshire S40 2TU
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Transcript
WHY DO WE USE STEAM?WHY DO WE USE STEAM?
Jonathan Beresford BSc (Hons) Jonathan Beresford BSc (Hons) MScMSc
AKVO LtdAKVO Ltd
07773 33581207773 335812
WHY USE STEAMWHY USE STEAM
Higher heat content than hot water– @100psi steam = 2800 kj/kg– @100psi hot water = 720 kj/kg
Means smaller pipes can be used Means lower flow rates Means less weight needs to be supported
BUT We need a condensate return system
WHY BOTHER TO RETURN THE WHY BOTHER TO RETURN THE CONDENSATECONDENSATE
It is very hot– @15psi hot water contains 500kj/kg– @90 deg C hot water contains 380kj/kg– @10 deg C raw water contains 40kj/kg
It is almost pure– Reduces blowdown
Saves energy
– Reduces chemical needs Lowers oxygen content
– Minimises water costs
CONDENSTAE SYSTEM CONDENSTAE SYSTEM COMPONENTSCOMPONENTS
Steam traps– Thermostaic– Ball float– Thermodynamic– Liquid expansion
Sight glasses Strainers Air vents Receivers Pumps
LIQUID EXPANSION TRAPLIQUID EXPANSION TRAP
Contains an oil filled element to operate at preset temperature
Operates between 60 – 100 deg C
Must be installed with condensate discharge upright.
BALANCE PRESSURE TRAPBALANCE PRESSURE TRAP
Can be installed horizontally or vertically
FLOAT TRAPFLOAT TRAP
Maximum pressure 230psi
Should be fitted as close as possible to the item of plant requiring trapping.
Very effective at removing high loads of condensate under start up conditions
FLOAT TRAP WITH AIR VENTFLOAT TRAP WITH AIR VENT
Used where steam locking may be a problem.
INVERTED BUCKET TRAPINVERTED BUCKET TRAP
Designed for installation in vertical pipe work
BI-METAL STEAM TRAPBI-METAL STEAM TRAP
Can be installed vertically or horizontally.
Can be of a more complex design
Installed where pre-cooling of the condensate is required prior to discharge.
STRAINERSSTRAINERS•Designed to remove particulates ahead of steam traps.
•Must be cleaned out regularly.
•Available in a range of materials.
RECOVERYRECOVERY
•Collects condensate from traps.
•Automatic pump operation.
•Returns condensate to hotwell at low pressure.
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