Abstract
Concentrated solar power (CSP) can offer solutions to
overcome many problems related to fossil fuel consumption
and fast growing share of intermittent solar and wind
generation. As intermittent renewable energy generation
is increasing, energy storages have an important role in
balancing the increasing gap between power generation and
consumption. Thermal energy storage (TES) integration
into solar fields is a proven technology. The importance
of CSP field dynamics for energy storage operations is
evident. Dynamic performance simulation of CSP field
under varying conditions is an important tool to plan,
predict and finally optimize thermal energy storage
operations.
CSP technologies considered in this paper, parabolic
trough (PT) and linear Fresnel reflector (LFR) are both
proven line-focusing CSP technologies, PT having better
sun tracking ability but more complex design. Solar
irradiation is a time and location dependent variable
energy source, and thus dynamic modelling is needed to
investigate plant behavior for storage operations. In
this paper solar field models based on both PT and LFR
technologies are configured in Apros simulation software.
Apros has the capability to dynamically simulate solar
field behavior with varying collector dimensions and
field layouts under intermittent irradiation conditions.
In this paper design and performance calculation of PT
and LFR collector modules configured in Apros and two
entire solar field configurations, including collector
modules, solar radiation and solar irradiation processor
modules, and field control, are presented. Both solar
fields represent recirculation boiler and apply direct
steam generation (DSG). Solar modules are used to define
solar position and beam and diffusive radiation on the
tilted surface according to time and location and taking
into account sun tracking on a single-axis.
Dynamic performance of both models based on two different
CSP technologies was investigated under different
conditions. Thermal performance of two models was
compared to each other at different dates at the selected
location by simulating full 24 hours at each case.
Similar control strategies were applied to both fields.
Dynamic model development of different solar fields is
essential in order to augment the utilization of CSP
technologies and to evaluate suitability of thermal
energy storage integration into solar field in certain
location, and to further evaluate integration
feasibility. The results show an obvious difference in
performance between technologies at different operational
conditions. The performance investigation reveals the
dynamic charge and discharge needs for storage operations
in varying conditions.
Original language | English |
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Publication status | Published - 2015 |
Event | 9th International Renewable Energy Storage Conference, IRES 2015 - Düsseldorf, Germany Duration: 9 Mar 2015 → 11 Mar 2015 Conference number: 9 |
Conference
Conference | 9th International Renewable Energy Storage Conference, IRES 2015 |
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Abbreviated title | IRES 2015 |
Country/Territory | Germany |
City | Düsseldorf |
Period | 9/03/15 → 11/03/15 |
Keywords
- CSP
- concentrated solar power
- parabolic trough
- linear Fresnel collecor
- direct steam generation
- thermal energy storage
- dynamic simulation
- Apros