Laltu Chandra Indian Institute of Technology Jodhpur chandraiitjacin Concentrated solar thermal technologies Line Focusing Flux concentration up to 100 suns Parabolic Trough Concentrator based ID: 244747
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Slide1
Point and Line Focusing Receiver Technologies
Laltu
Chandra
Indian Institute of Technology Jodhpur
chandra@iitj.ac.inSlide2
Concentrated solar thermal technologies
Line Focusing (Flux concentration: up to 100 suns)
Parabolic Trough Concentrator based
Linear Fresnel Reflector based
Point Focusing (Flux concentration: 1000 or more suns)
Dish concentrator based
Heliostat based
1 sun = 1kW/m2
Higher flux concentration
higher temperatureSlide3
Line Focusing Technologies
Parabolic trough
(Direct solar
steam Technology
, PSA Spain
HTF
CGSlide4
Receiver tube and support
Diameter of absorber tube = 70mm
Diameter of receiver tube = 115 mm
Length of absorber tube between support brackets = 4m
Overall length could be 1000s of metersSlide5
Linear Fresnel ReflectorSlide6
Linear Cavity Receiver
This document contains company-proprietary data, and is meant for use of IITJ only.Slide7
Reflector Unit
Type
Elastically curved glass mirror
Reflector material
3 mm thick Solar grade low iron glass – mirror from Saint-Gobain Glass, Germany
Specular Reflectivity
92.5% (In 3º Cone)
Global reflectivity93.5 % in standard conditions, measured to ISO 9050, AM 1.5
Quantity8 nos Slide8
Point Focusing Technologies
Dish concentrator
Heliostat based central solar tower
PS10 (DSG)
Slide9
Tubular and Volumetric Receiver
Types of Volumetric Receivers :
Closed volumetric receiver
Open volumetric receiver
Principle of volumetric air receiver [Hoffschmidt et al. (2003)]Slide10
Closed and open volumetric air receivers
Closed air receiver
Open air receiverSlide11
Acknowledgements
All the sources of the presented materials are hereby duly acknowledged.