steam turbines -turbotech
TRANSCRIPT
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Turbine CogenerationTurbine CogenerationTechnology for EnergyTechnology for Energy
TurboTech Precision Engineering Private LimitedTurboTech Precision Engineering Private Limited
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e ro em
ELECTRICITY COSTS AREELECTRICITY COSTS ARE,,
S UEEZING OPERATINGS UEEZING OPERATING
MARGINSMARGINS
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e o u on
MAKE THE PLANT ASMAKE THE PLANT AS
POSSIBLEPOSSIBLE
PREFERABLY USINGPREFERABLY USING
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Cogeneration: Best Option
or rocess n us r es
power
os s eam users can now ene rom
cogeneration, regardless of sizePromoted by all national and
international agencies involved in
energy efficiency
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e en esource
required pressure Usa e ressure is enerall much lower than
generation pressure due to constraints in
steam generation n a yp ca case g pressure sa ura e
steam is obtained at 16 bar and is used at 3.5bar Saturated for rocess
Steam is let-down in a Pressure ReducingDesuperheting Station (PRDS)from HP
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ea er ressure to t e sage ressure
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The Hidden Resource
con
is converted to useless Turbulence &
This Pressure Energy can be convertedo se u ec r ca ower y pass ngthe steam through a Back Pressure
eam ur ne ur ne
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Current Scenario
3.5 kg/cmg Header3.5 kg/cmg Header16 Kg/cmg/Sat16 Kg/cmg/Sat PRDSPRDS
NO POWER GENERATEDNO POWER GENERATED
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3.5 kg/cmg Header3.5 kg/cmg Header16 Kg/cmg/Sat16 Kg/cmg/Sat PRVPRV12 TPH12 TPH
~~300 KWe Generator300 KWe Generator
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ur o ec o u on
Install back pressure steam turbine for incidental powerInstall back pressure steam turbine for incidental power
Steam from 16 k /cm /Saturated is brou ht down to 3.5Steam from 16 k /cm /Saturated is brou ht down to 3.5kg/cmg @ 12 TPH for Processkg/cmg @ 12 TPH for Process
In the process generate Incidental Power of 300 KweIn the process generate Incidental Power of 300 Kwe . .. .cost of power of Rs. 5 per unit)cost of power of Rs. 5 per unit)
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TurboTechSolution
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Operating Principles of a
mp e eam ur ne
converted to high velocity in the nozzle
The high-velocity steam is impinged onh l n h r in wh l whi hare thus given a kick (impulse)
Th turbin wh l r tat th n rat rto produce electricity
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What Happens to the
eam
controlled usage pressure, and then
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Desirable Features for a
rocess eam ur ne
High efficiency for min. payback period
Light-weight and compact for ease of
installation in cramped spacePrecisely controlled back pressure to
lant
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ECT Steam Turbines
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eam ur nes
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The ECT: Precisely
es gne or n us ry
available(Minimizes investment)
es e c ency n s s ze c ass
20% better)Less than 3 tonnes weight and very
compact (W x L x H : 5 x 10 x 6)
Precise Plant Steam Control
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escr p on o,
coupled to Step-Down Gearbox, driving anGenerator
Power Rating: 75 to 500 kW
All steam-wetted parts are Stainless Steel forong corros on- ree e
Turbine is machined from a solid Hardened
any Steam service
Precision CNC milled aerod namic bladin
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escr p on con .
Gears for long-life, low noise and highefficienc
Unitary Skid for all equipment, single compact
unit, factor assembled, ali ned and tested,ready for hook-up to steam and electricalservices at site
No civil work foundations required, as skid ismounted on Anti-Vibration Rubber Mounts
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Description (contd.)
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escr p on con .
,
pressure control within +/- 0.1 kg/cm2
on ro s or max mum ease o use
Redundant in-built safety featuresMulti-sensor Fail-safe trip system
,required
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ay ac e a s
ECT system
Electrical hookup
,
80% Depreciation allowed in First Year
Payback : 9 Months 2 Years
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.300 Kwe Installation
Turbine basic cost 39E.D(16.32%) 6.36
Supervision of Erection 3
Freight 0.2
Expansion Bellows 0.6Turbine Erection 1
Electric Cabling 1
Steam Piping etc. 2
v .
Miscellaneous 1
Less modvat 6.36
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.
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ay ac na ys s
. .
No.0f hours per year 7200 hrs.
Savings in power per year 108 Rs.(lakhs)
os o mac ne + ns a a on . s. a s
Payback 6 months
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Why 300 KW ECT Now And
o a er
Rs. 5.0 + cr.
24 months approx.
During this time ECT would generate Rs.1.5 cr.Approx. after paying itself back
ECT could be then used to generate atleast
PRV saving another Rs. 50 lakhs p.a.
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Why Sat. Steam Turbine and
no uper ea e ur ne
superheater in the boiler. Hence Cost SH turbine re uires a desu erheater down
stream as all processes use sat steam.
Involves investment and running cost o er requ res e-m n wa er. ga n
investment and running cost
CONSUMPTION in SH steam boiler ( approx.15-22% increase)
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Comparison of power generation with
Parameters Units Su erheated steam Saturated steam
COST COMPARISION FOR SATURATED V/S SUPERHEATED STEAM
1 Inlet pressure into turbine kg/cm2g 42 422 Inlet temp. into turbine Deg.C 440 sat(238.3)
. .
4 Inlet enthalpy of steam KJ/kg 3305 2800
kcal/kg 789.5365504 668.8963211
5 Enthalpy of feed water kcal/kg 50 50ea a e n o er ca g . .
7 Fuel used bagasse
8 Calorific value of fuel kcal/kg 2200 2200
9 Efficiency of boiler % 68 68
10 Nett energy required in boiler kcal/kg 1087.553751 910.141648611 Amount of steam generated from a kg of fuel kg 2.022888523 2.41720616
12 Cost of fuel per kg Rs./ton 1000 1000
Rs./k 1 1
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Comparison of power generation with
13 Cost of steam Rs./kg 0.494342614 0.413700749
14 Water treatment costs Rs./kg 0.2 0.1
15 Total steam cost Rs./kg 0.694342614 0.55837038
16 Exhaust Enthalpy of steam KJ/kg 2972
kcal/kg 709.985666517 Amount of heat lost in desuperheating kcal/kg 41.08934544
18 Total heat in desuperheating kcal 410893.4544
19 Nett steam generated in desuperheating kg./hr 614.2857143
20 Boiler capacity TPH 10 10
21 Nett steam generated TPH 10.61428571 9.2
23 Loss of steam generation 0.8
24 Amount of fuel required for amount of steam prod kg./hr 4943.426139 4137.007494
25 Amount of steam per unit of power kg/kw-hr 12.48739496 15.20661157
. . .
27 Power generated KW 850 60528 Cost of power Rs./unit 1.599673343 0.738340998
29 Extra Power due to superheated steam KW 245
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ost o xtra ower ue to super eate steam s. un t .
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c now e gemen
nation-wide and 20 more in execution.
encouragement and support of our.
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onc us on
exciting opportunities for energy cost.
TurboTech is committed to servicing theneeds of the Industry, with innovative
and cost-effective products.
TurboTech Precision Engineering Private Limited28/29 Second Main, Rajajinagar Industrial Town, Bangalore 560 044.