Projects per year
Abstract
CSP hybrids are one of the possible technical solutions
in order to increase the share of
renewable energy and decrease greenhouse gas emission
levels as well as fuel consumption.
The main objectives of the thesis are to research
state-of-the-art technologies in
concentrated solar power (CSP) and conventional power
plants, to comprehensively
study the possible integration options and to develop one
CSP hybrid configuration by
using Advanced Process Simulator (Apros), which is a
dynamic modelling and simulation
tool for industrial processes. Furthermore, the
objectives are to develop control
strategy for the hybrid and demonstrate the operation of
the hybrid under steady state
and transient conditions in order to find challenges of
hybrid systems and future development
requirements. The theory is based on the available
scientific literature for CSP,
conventional power plants and CSP hybrids as well as on
the information available from
companies and organizations working with the
technologies. The model development is
based on the theoretical background as well as the
know-how of VTT about Apros.
Based on the simulations, solar steam fed to the joint
high pressure turbine increases
thermal efficiency and changes the thermal balance of the
steam cycle. In addition, attainable
solar shares are studied, in which design values of live
steam and reheated
steam temperatures of steam boiler are reached.
Furthermore, as the steam generation is
decreased from the solar field, transients can be seen in
steam mass flows to turbines,
power output of the turbines and steam temperatures and
pressures. However, the modelled
transients could be compensated with the steam boiler and
the transients are acceptable
for turbines. Based on the conducted research, the main
challenges of the hybrid
system are identified. These are, for example, attainable
solar shares, design of the
steam parameters in solar field and steam boiler and
combination of the two steam lines,
imbalance between turbines and heat surfaces,
optimization of heat surfaces and operation
of steam boiler under fluctuating solar irradiation
conditions.
The developed and modelled CSP hybrid seems to be
technically feasible at least with
smaller solar shares. However, the hybrid system requires
more research. Thus, future
development requirements include, for example,
improvement of the control engineering
of the hybrid, research on the optimal hybrid
configuration and on the possibilities
to reach higher solar shares, transient simulations with
higher solar shares and conducting
exergy and economic analyses for the hybrid system. As a
conclusion, the achieved
results and the developed model in this thesis provide
viable information for the future
development of CSP hybrids.
Original language | English |
---|---|
Qualification | Master Degree |
Awarding Institution |
|
Place of Publication | Tampere |
Publisher | |
Publication status | Published - 2016 |
MoE publication type | G2 Master's thesis, polytechnic Master's thesis |
Keywords
- concentrated solar power (CSP)
- hybrid
- direct steam generation (DSG)
- dynamic modelling and simulation (DMS)
- Apros
Fingerprint
Dive into the research topics of 'Development of Concentrated Solar Power and Conventional Power Plant Hybrids: Master's thesis'. Together they form a unique fingerprint.Projects
- 1 Finished
-
COMBO-CFB: Combination of Concentrated Solar Power with Circulating Fluidized Bed
Suojanen, S. (Participant), Mäki, E. (Participant), Tähtinen, M. (Participant) & Sihvonen, T. (Participant)
12/03/14 → 31/12/16
Project: Business Finland project