Concentrated solar power and circulating fluidized bed power plant hybrids: Final results of the COMBO-CFB project

Research output: Book/ReportReport

Abstract

Concentrated solar power (CSP) is a renewable energy technology, which is able to provide dispatchable power according to demand. Dispatchability is typically achieved by decoupling solar thermal collection and power production with a thermal energy storage system. However, storage solutions for direct steam generating CSP technologies are still in a development phase. Hybrid system, in which solar field is integrated to a conventional power plant, is another option to produce renewable load-following power. The main idea in a hybrid system is to compensate the variation in solar thermal production with the steam boiler. In addition to dispatchable nature of power production, hybrid system offers several other possible benefits with respect to stand-alone CSP plant, such as reduced fuel consumption and emissions, enhanced plant efficiency and reduced production costs. However, the highly dynamic nature of the process imposes some challenges for the design and operation of the system, in particular in the case of significant solar share. Dynamic analysis of the system is foreseen to be utmost important in the plant design phase in order to take into account all the dynamic interactions in the process, which could affect for example the balance of different boiler heat transfer surfaces and turbine sections. The project "Combination of Concentrated Solar Power (CSP) with Circulating Fluidized Bed (CFB) power plants" (COMBO-CFB) aimed at developing innovative, flexible and high-efficient hybrid concept, which is able to balance the distributed intermittent production. The concept development included both experimental work and dynamic modelling and simulation. The research focused on the capacity building in terms of different CSP technologies, hybrid concepts and thermochemical processes, and in technical feasibility of the hybrid concepts, including the benefits provided by different concepts, challenges and possible future improvements. Three different hybrid concepts were studied in detail, namely: 1) Feedwater preheating concept, 2) Cold reheat line concept, and 3) High pressure turbine concept.
Original languageEnglish
PublisherVTT Technical Research Centre of Finland
Number of pages156
ISBN (Electronic)978-951-38-8531-1
Publication statusPublished - 2017
MoE publication typeNot Eligible

Publication series

SeriesVTT Technology
Number296
ISSN2242-1211

Fingerprint

Fluidized beds
Solar energy
Power plants
Hybrid systems
Boilers
Turbines
Steam
Solar power plants
Preheating
Thermal energy
Fuel consumption
Dynamic analysis
Energy storage
Heat transfer
Costs
Hot Temperature

Keywords

  • hybrid power plant
  • concentrated solar power
  • CSP
  • circulating fluidized bed boiler
  • power plant
  • renewable energy

Cite this

@book{702f237d42774e938ee8d05e7e50552e,
title = "Concentrated solar power and circulating fluidized bed power plant hybrids: Final results of the COMBO-CFB project",
abstract = "Concentrated solar power (CSP) is a renewable energy technology, which is able to provide dispatchable power according to demand. Dispatchability is typically achieved by decoupling solar thermal collection and power production with a thermal energy storage system. However, storage solutions for direct steam generating CSP technologies are still in a development phase. Hybrid system, in which solar field is integrated to a conventional power plant, is another option to produce renewable load-following power. The main idea in a hybrid system is to compensate the variation in solar thermal production with the steam boiler. In addition to dispatchable nature of power production, hybrid system offers several other possible benefits with respect to stand-alone CSP plant, such as reduced fuel consumption and emissions, enhanced plant efficiency and reduced production costs. However, the highly dynamic nature of the process imposes some challenges for the design and operation of the system, in particular in the case of significant solar share. Dynamic analysis of the system is foreseen to be utmost important in the plant design phase in order to take into account all the dynamic interactions in the process, which could affect for example the balance of different boiler heat transfer surfaces and turbine sections. The project {"}Combination of Concentrated Solar Power (CSP) with Circulating Fluidized Bed (CFB) power plants{"} (COMBO-CFB) aimed at developing innovative, flexible and high-efficient hybrid concept, which is able to balance the distributed intermittent production. The concept development included both experimental work and dynamic modelling and simulation. The research focused on the capacity building in terms of different CSP technologies, hybrid concepts and thermochemical processes, and in technical feasibility of the hybrid concepts, including the benefits provided by different concepts, challenges and possible future improvements. Three different hybrid concepts were studied in detail, namely: 1) Feedwater preheating concept, 2) Cold reheat line concept, and 3) High pressure turbine concept.",
keywords = "hybrid power plant, concentrated solar power, CSP, circulating fluidized bed boiler, power plant, renewable energy",
author = "Elina Hakkarainen and Suvi Suojanen and Matti T{\"a}htinen and Toni Pikkarainen and Antton Tapani and Teemu Sihvonen and Markus Hurskainen and Hannu Mikkonen and Jari Lappalainen and Heidi Saastamoinen",
year = "2017",
language = "English",
series = "VTT Technology",
publisher = "VTT Technical Research Centre of Finland",
number = "296",
address = "Finland",

}

Concentrated solar power and circulating fluidized bed power plant hybrids : Final results of the COMBO-CFB project. / Hakkarainen, Elina; Suojanen, Suvi; Tähtinen, Matti; Pikkarainen, Toni; Tapani, Antton; Sihvonen, Teemu; Hurskainen, Markus; Mikkonen, Hannu; Lappalainen, Jari; Saastamoinen, Heidi.

VTT Technical Research Centre of Finland, 2017. 156 p. (VTT Technology; No. 296).

Research output: Book/ReportReport

TY - BOOK

T1 - Concentrated solar power and circulating fluidized bed power plant hybrids

T2 - Final results of the COMBO-CFB project

AU - Hakkarainen, Elina

AU - Suojanen, Suvi

AU - Tähtinen, Matti

AU - Pikkarainen, Toni

AU - Tapani, Antton

AU - Sihvonen, Teemu

AU - Hurskainen, Markus

AU - Mikkonen, Hannu

AU - Lappalainen, Jari

AU - Saastamoinen, Heidi

PY - 2017

Y1 - 2017

N2 - Concentrated solar power (CSP) is a renewable energy technology, which is able to provide dispatchable power according to demand. Dispatchability is typically achieved by decoupling solar thermal collection and power production with a thermal energy storage system. However, storage solutions for direct steam generating CSP technologies are still in a development phase. Hybrid system, in which solar field is integrated to a conventional power plant, is another option to produce renewable load-following power. The main idea in a hybrid system is to compensate the variation in solar thermal production with the steam boiler. In addition to dispatchable nature of power production, hybrid system offers several other possible benefits with respect to stand-alone CSP plant, such as reduced fuel consumption and emissions, enhanced plant efficiency and reduced production costs. However, the highly dynamic nature of the process imposes some challenges for the design and operation of the system, in particular in the case of significant solar share. Dynamic analysis of the system is foreseen to be utmost important in the plant design phase in order to take into account all the dynamic interactions in the process, which could affect for example the balance of different boiler heat transfer surfaces and turbine sections. The project "Combination of Concentrated Solar Power (CSP) with Circulating Fluidized Bed (CFB) power plants" (COMBO-CFB) aimed at developing innovative, flexible and high-efficient hybrid concept, which is able to balance the distributed intermittent production. The concept development included both experimental work and dynamic modelling and simulation. The research focused on the capacity building in terms of different CSP technologies, hybrid concepts and thermochemical processes, and in technical feasibility of the hybrid concepts, including the benefits provided by different concepts, challenges and possible future improvements. Three different hybrid concepts were studied in detail, namely: 1) Feedwater preheating concept, 2) Cold reheat line concept, and 3) High pressure turbine concept.

AB - Concentrated solar power (CSP) is a renewable energy technology, which is able to provide dispatchable power according to demand. Dispatchability is typically achieved by decoupling solar thermal collection and power production with a thermal energy storage system. However, storage solutions for direct steam generating CSP technologies are still in a development phase. Hybrid system, in which solar field is integrated to a conventional power plant, is another option to produce renewable load-following power. The main idea in a hybrid system is to compensate the variation in solar thermal production with the steam boiler. In addition to dispatchable nature of power production, hybrid system offers several other possible benefits with respect to stand-alone CSP plant, such as reduced fuel consumption and emissions, enhanced plant efficiency and reduced production costs. However, the highly dynamic nature of the process imposes some challenges for the design and operation of the system, in particular in the case of significant solar share. Dynamic analysis of the system is foreseen to be utmost important in the plant design phase in order to take into account all the dynamic interactions in the process, which could affect for example the balance of different boiler heat transfer surfaces and turbine sections. The project "Combination of Concentrated Solar Power (CSP) with Circulating Fluidized Bed (CFB) power plants" (COMBO-CFB) aimed at developing innovative, flexible and high-efficient hybrid concept, which is able to balance the distributed intermittent production. The concept development included both experimental work and dynamic modelling and simulation. The research focused on the capacity building in terms of different CSP technologies, hybrid concepts and thermochemical processes, and in technical feasibility of the hybrid concepts, including the benefits provided by different concepts, challenges and possible future improvements. Three different hybrid concepts were studied in detail, namely: 1) Feedwater preheating concept, 2) Cold reheat line concept, and 3) High pressure turbine concept.

KW - hybrid power plant

KW - concentrated solar power

KW - CSP

KW - circulating fluidized bed boiler

KW - power plant

KW - renewable energy

M3 - Report

T3 - VTT Technology

BT - Concentrated solar power and circulating fluidized bed power plant hybrids

PB - VTT Technical Research Centre of Finland

ER -

Hakkarainen E, Suojanen S, Tähtinen M, Pikkarainen T, Tapani A, Sihvonen T et al. Concentrated solar power and circulating fluidized bed power plant hybrids: Final results of the COMBO-CFB project. VTT Technical Research Centre of Finland, 2017. 156 p. (VTT Technology; No. 296).