Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants

Suvi Suojanen (Corresponding Author), Elina Hakkarainen, Matti Tähtinen, Teemu Sihvonen

Research output: Contribution to journalArticleScientificpeer-review

26 Citations (Scopus)

Abstract

Availability and flexibility of variable renewable energy production can be increased without thermal energy storages by integrating intermittent energy production with load following energy production. This paper focuses on modeling, analysis and comparison of three hybrid configurations for concentrated solar power and conventional steam power plants. The configurations include feedwater preheating, cold reheat line and high pressure turbine concepts, in which linear Fresnel collector solar field with direct steam generation is applied to generate steam parallel with the steam boiler. The modeling is conducted using dynamic simulation software Apros®, which enables investigation of the system operation under varying process conditions. In particular, the focus is on the comparison of thermal load balance and interdependencies of the subsystems. In addition, the focus is on increasing the solar contribution, as the solar share is low in current commercial concepts. As a main conclusion, the more solar steam is fed to the system, the more different turbine sections and heat surfaces of the steam boiler are imbalanced, which leads to challenging system design. In addition, the maximum fuel and emission savings are not only determined by the achievable solar share, but also by the hybrid process design. The design of the hybrid system has to be optimized and modified according to the configuration in order to achieve higher peak solar share and fuel and emission savings than 20% achieved in this study.

Original languageEnglish
Pages (from-to)327-339
Number of pages13
JournalEnergy Conversion and Management
Volume134
DOIs
Publication statusPublished - 1 Jan 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Steam power plants
Solar energy
Steam
Boilers
Turbines
Preheating
Solar collectors
Thermal load
Dynamic loads
Thermal energy
Hybrid systems
Energy storage
Process design
Systems analysis
Availability
Computer simulation

Keywords

  • apros
  • concentrated solar power
  • circulating fluidized bed boiler
  • hybridization
  • direct steam generation
  • Concentrated solar power

Cite this

@article{e2778840ef0f42e38856a1377d2ae805,
title = "Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants",
abstract = "Availability and flexibility of variable renewable energy production can be increased without thermal energy storages by integrating intermittent energy production with load following energy production. This paper focuses on modeling, analysis and comparison of three hybrid configurations for concentrated solar power and conventional steam power plants. The configurations include feedwater preheating, cold reheat line and high pressure turbine concepts, in which linear Fresnel collector solar field with direct steam generation is applied to generate steam parallel with the steam boiler. The modeling is conducted using dynamic simulation software Apros{\circledR}, which enables investigation of the system operation under varying process conditions. In particular, the focus is on the comparison of thermal load balance and interdependencies of the subsystems. In addition, the focus is on increasing the solar contribution, as the solar share is low in current commercial concepts. As a main conclusion, the more solar steam is fed to the system, the more different turbine sections and heat surfaces of the steam boiler are imbalanced, which leads to challenging system design. In addition, the maximum fuel and emission savings are not only determined by the achievable solar share, but also by the hybrid process design. The design of the hybrid system has to be optimized and modified according to the configuration in order to achieve higher peak solar share and fuel and emission savings than 20{\%} achieved in this study.",
keywords = "apros, concentrated solar power, circulating fluidized bed boiler, hybridization, direct steam generation, Concentrated solar power",
author = "Suvi Suojanen and Elina Hakkarainen and Matti T{\"a}htinen and Teemu Sihvonen",
note = "Project code: 101320",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.enconman.2016.12.029",
language = "English",
volume = "134",
pages = "327--339",
journal = "Energy Conversion and Management",
issn = "0196-8904",
publisher = "Elsevier",

}

Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants. / Suojanen, Suvi (Corresponding Author); Hakkarainen, Elina; Tähtinen, Matti; Sihvonen, Teemu.

In: Energy Conversion and Management, Vol. 134, 01.01.2017, p. 327-339.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants

AU - Suojanen, Suvi

AU - Hakkarainen, Elina

AU - Tähtinen, Matti

AU - Sihvonen, Teemu

N1 - Project code: 101320

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Availability and flexibility of variable renewable energy production can be increased without thermal energy storages by integrating intermittent energy production with load following energy production. This paper focuses on modeling, analysis and comparison of three hybrid configurations for concentrated solar power and conventional steam power plants. The configurations include feedwater preheating, cold reheat line and high pressure turbine concepts, in which linear Fresnel collector solar field with direct steam generation is applied to generate steam parallel with the steam boiler. The modeling is conducted using dynamic simulation software Apros®, which enables investigation of the system operation under varying process conditions. In particular, the focus is on the comparison of thermal load balance and interdependencies of the subsystems. In addition, the focus is on increasing the solar contribution, as the solar share is low in current commercial concepts. As a main conclusion, the more solar steam is fed to the system, the more different turbine sections and heat surfaces of the steam boiler are imbalanced, which leads to challenging system design. In addition, the maximum fuel and emission savings are not only determined by the achievable solar share, but also by the hybrid process design. The design of the hybrid system has to be optimized and modified according to the configuration in order to achieve higher peak solar share and fuel and emission savings than 20% achieved in this study.

AB - Availability and flexibility of variable renewable energy production can be increased without thermal energy storages by integrating intermittent energy production with load following energy production. This paper focuses on modeling, analysis and comparison of three hybrid configurations for concentrated solar power and conventional steam power plants. The configurations include feedwater preheating, cold reheat line and high pressure turbine concepts, in which linear Fresnel collector solar field with direct steam generation is applied to generate steam parallel with the steam boiler. The modeling is conducted using dynamic simulation software Apros®, which enables investigation of the system operation under varying process conditions. In particular, the focus is on the comparison of thermal load balance and interdependencies of the subsystems. In addition, the focus is on increasing the solar contribution, as the solar share is low in current commercial concepts. As a main conclusion, the more solar steam is fed to the system, the more different turbine sections and heat surfaces of the steam boiler are imbalanced, which leads to challenging system design. In addition, the maximum fuel and emission savings are not only determined by the achievable solar share, but also by the hybrid process design. The design of the hybrid system has to be optimized and modified according to the configuration in order to achieve higher peak solar share and fuel and emission savings than 20% achieved in this study.

KW - apros

KW - concentrated solar power

KW - circulating fluidized bed boiler

KW - hybridization

KW - direct steam generation

KW - Concentrated solar power

UR - http://www.scopus.com/inward/record.url?scp=85007329859&partnerID=8YFLogxK

U2 - 10.1016/j.enconman.2016.12.029

DO - 10.1016/j.enconman.2016.12.029

M3 - Article

VL - 134

SP - 327

EP - 339

JO - Energy Conversion and Management

JF - Energy Conversion and Management

SN - 0196-8904

ER -