13.02.2013 integration of solar thermal with fossil … 2013 presentations/day-1...integration of...
TRANSCRIPT
Integration of
Solar Thermal with
Fossil Fuel Plant
By
Amit Kulshreshtha, AGM (PE Mech)
Rajeev Baijal, AGM (PE Civil)
Shaswattam, AGM (Netra)
Deepak, AGM (PE Mech)
B Kamath, AGM (REDG)
13.02.2013
NTPC Portfolio
Coal based Power Plants 23 35719 MW
Gas based Power Plants 07 3955 MW
Total 39674 MW
Solar Projects
1 Under Commissioning 03 20 MW
2 Under Tendering 04 75 MW
3 FR ready 01 15 MW
Total 110 MW
4 FR under preparation 04 350 MW
Solar Technology
Solar Photo Voltaic Solar Thermal
1 Silicon PV with Mono /
Poly crystalline
2 Thin Film
3 Concentrating PV (CPV)
1 Parabolic Trough (PT)
2 Compact Linear Fresnel
Reflector (CLFR)
3 Solar Tower (ST) with Central /
Distributed Tower (s)
4 Dish with Thermal Receiver /
Sterling Engine
Solar Parabolic Trough
Parabolic trough shaped mirrors collect and reflect the solar energy onto receiver tubes positioned along the focal line of parabolic mirrors. Troughs are made to rotate on a north-south axis to track the sun from east to west.
Solar Parabolic Trough
Parabolic trough shaped mirrors collect and reflect the solar energy onto receiver tubes positioned along the focal line of parabolic mirrors. Troughs are made to rotate on a north-south axis to track the sun from east to west.
Solar Parabolic Trough
Parabolic trough shaped mirrors collect and reflect the solar energy onto receiver tubes positioned along the focal line of parabolic mirrors. Troughs are made to rotate on a north-south axis to track the sun from east to west.
SUNPATH
MORNING AFTERNOON
Solar Parabolic Trough
Solar Parabolic Trough
Compact Linear Fresnel Reflector technology uses a reflector made of several long slices of flat mirrors. Mirrors are mounted on trackers and configured to geometrically form a parabola to reflect sunlight onto a receiver tube fixed in the geometric focal line above these mirrors.
Compact Linear Fresnel Reflector
Compact Linear Fresnel Reflector
Compact Linear Fresnel Reflector
Solar Central Tower
Solar Tower deploys numerous large number of flat sun tracking mirrors, known as heliostats, to focus sunlight onto a fixed receiver mounted on a tall tower.
Heliostats
Receiver
Solar Central Tower
Solar Tower deploys numerous large number of flat sun tracking mirrors, known as heliostats, to focus sunlight onto a fixed receiver mounted on a tall tower.
Heliostats
Receivers
Heliostats
Receivers
Power Block
Solar Distributed Tower
Heliostats
Receivers
Solar Distributed Tower
Solar Dish is a parabolic shaped dish, which tracks the sun, through a two axis movement, continuously to gather the solar energy and point focuses the same onto a Thermal receiver / Sterling Engine which is mounted at the focal point.
Solar Dish
Engine
Solar Dish is a parabolic shaped dish, which tracks the sun, through a two axis movement, continuously to gather the solar energy and point focuses the same onto a Thermal receiver / Sterling Engine which is mounted at the focal point.
Solar Dish
Potential of Solar Hybrid
Coal Fired Power Plant
+
Solar Thermal
Adding
Green Power
to
Existing Coal
fleet
Meeting
Renewable Energy
Targets
Reduce Plant
Emissions
Lower fuel cost
and reliance
on fossil fuel
Addresses
the Intermittency
challenge
without
Storage
Lower cost
than
stand alone
Low Man/ MW Ratio
Higher Efficiency
No Start-Stop
Solar Hybrid
at
NTPC Dadri
NTPC Dadri Layout
U#1 TG
210 MW
Land for Solar Field
28 Acres
Integration Options
Option-1
Solar Steam in HP/ IP/ LP turbine
Conventional
Integration Philosophy
Integration Options
Option-2
Solar steam to replace extraction steam to heaters
Turbine
Heater
X To SG /
Deareator
Solar Steam
Feed water/
Condensate
Steam Steam
Generator
Ble
d S
tea
m
Integration Options
Option-3
Solar steam for cooling CW inlet
Condenser CW
pump
VAM
Integration Options Option-4
Solar Steam to preheat feed water to SG
Integration Options Option-4
Solar Steam to preheat feed water to SG
Integration Options Option-4
Solar Steam to preheat feed water to SG
Integration Options Option-4
Solar Steam to preheat feed water to SG
Location NTPC Dadri, NCR
(Dist. Ghaziabad, Uttar Pradesh)
Identified area MGR unloading bulb
Land available 28 acres
Solar Radiation 1949 kWh/m2/yr
(DNI as per Meteonorm)
Project Brief
Solar Field 15 MW (Thermal)
Conversion efficiency 24.39%
Additional output 3.66 MW (Electrical)
Coal Saving 3,250 MT/year
CO2 reduction 4060 MT/year
Project Benefits
Metering
Direct metering of Solar Power separately is
not possible
Proposed on the basis of measurement of
Enthalpy input to the feed water system from
Solar field
Normative efficiency of the cycle for
conversion of Thermal to Electrical energy
Issues
Tariff
CERC has not announced any tariff for Solar
hybrid power plant as on date. As such fresh
PPA for the Solar Power is not possible
Shall be taken up with CERC
•To allow Solar Power generated to be
distributed to all utilities in pro rata basis
•To consider this project as a demo project for
tariff formulation for future hybrid projects
Issues
Thermal Power Capacity 141 GW
@ 1% Solar addition 1400 MW
Coal Saving 1.243 MMT/yr
CO2 reduction 1.553 MMT/yr
Scope for Replication
Implementation of Solar thermal hybrid power plant of
15 MW thermal in NTPC Dadri and integration with
210 MW Unit 1 TG, in parallel to top HP heater, will be
the first of its kind not only in India but the first of its
kind in the integration methodology with any existing
thermal power plant in the world
This will resolve issues like metering and tariff and
pave way for replication of approx 1400 MW of Solar
Energy in the country. This will add power without any
CO2 emission and save precious fossil fuel
Conclusion