scholarly journals Analysis of the Applicability of the Parabolic Trough Solar Thermal Power Plants in the Locations with a Temperate Climate

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3003
Author(s):  
Tomasz Janusz Teleszewski ◽  
Mirosław Żukowski ◽  
Dorota Anna Krawczyk ◽  
Antonio Rodero
Keyword(s):  
Energy Balance ◽  
Power Plant ◽  
Thermal Power Station ◽  
Solar Collector ◽  
Thermal Power ◽  
Solar Thermal ◽  
Simplified Model ◽  
Temperate Climate ◽  
Power Station ◽  
Solar Thermal Power

Currently, intensive work is underway in Poland to increase the share of renewable energy sources in the overall energy balance. Therefore, this paper presents the possibilities of using concentrated solar power in zones with a temperate climate. A simplified model based on the energy balance in the solar collectors considering the main operating parameters of the typical solar power plant was developed. It should be noted here that the model does not take into account issues related to heat accumulation and electricity generation in a Solar Thermal Power Station. The simulation of forced convection inside the solar collector absorber was additionally included in the calculations to improve its accuracy. The model was verified using actual heat measurements at the outlet of the parabolic collector installation at a Solar Thermal Power Station located in the south of Spain. The heat generated by a similar solar collector system in a selected region with a temperate climate, the city of Bialystok (north-eastern Poland, geographic coordinates: 53°08′07″N 23°08′44″E) was determined by the developed simplified model for different months of the year. Based on the results of the analysis, it was found that the energy obtained from the same area of concentrated solar collectors located near Bialystok is eight times lower compared to the location in Cordoba depending on the variant of the power plant operation.

Exergetic Analysis of a Solar Thermal Power Plant

2013 ◽  
Vol 724-725 ◽  
pp. 156-162 ◽  
Author(s):  
Jing Qiu Wu ◽  
Dao Fei Zhu ◽  
Hua Wang ◽  
Yong Zhu
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Loss ◽  
Thermal Efficiency ◽  
Thermal Power Plant ◽  
Solar Collector ◽  
Thermal Power ◽  
Exergy Loss ◽  
Solar Thermal ◽  
Solar Thermal Power

The study of heat loss and exergy loss distribution in the power plant system plays a very important role in improving the efficiency of the system. In this paper, a dynamic simulation model of the 5MW solar thermal power system is established. Then, the simulation test with the actual data in a solar thermal power plant is carried out, and we analyze the heat and the exergy loss of the system. The results show that, the heat loss of the condenser is the largest, up to 72%. To increase the thermal efficiency of the system, the energy-saving research for the condenser should be pay attention to. The solar collector field has the most of exergy loss in the system, accounting for approximately 89%. From the exergy efficiency perspective, the solar collector system has huge potential for energy- saving. The thermal efficiency and exergy efficiency of a solar thermal power plant system increases as the load increases, full-load operation of the unit should be maintained as much as possible.

Design of a 200 kWe Solar Thermal Power Plant for Ontario

2008 ◽  
Author(s):  
Thomas A. Cooper ◽  
James S. Wallace
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Solar Collector ◽  
Thermal Power ◽  
Solar Thermal ◽  
Working Fluid ◽  
Small Scale ◽  
Computer Simulation Model ◽  
Night Time ◽  
Solar Thermal Power

A preliminary design and feasibility study has been conducted for a 200 kWe solar thermal power plant for operation in Ontario. The objective of this study is to assess the feasibility of small-scale commercial solar thermal power production in areas of relatively low insolation. The design has been developed for a convention centre site in Toronto, Ontario. The plant utilizes a portion of the large flat roof area of the convention centre to accommodate the collector array. Each power plant module provides a constant electrical output of 200 kWe throughout the year. The system is capable of maintaining the constant output during periods of low insolation, including night-time hours and cloudy periods, through a combination of thermal storage and a supplemental natural gas heat source. The powerplant utilized the organic Ranking cycle (ORC) to allow for relatively low source temperatures from the solar collector array. A computer simulation model was developed to determine the performance of the system year-round using the utilizability-solar fraction method. The ORC powerplant uses R245fa as the working fluid and operates at an overall efficiency of 11.1%. The collector is a non-concentrating evacuated tube type and operates at a temperature of 90°C with an average annual efficiency of 23.9%. The system is capable of achieving annual solar fractions of 0.686 to 0.874 with collector array areas ranging from 30 000 to 40 000 m2 and storage tank sizes ranging from 3.8 to 10 × 106L respectively. The lowest possible cost of producing electricity from the system is $0.393 CAD/kWh. The results of the study suggest that small-scale solar thermal plants are physically viable for year round operation in Ontario. The proposed system may be economically feasible given Ontario’s fixed purchase price of $0.42 CAD/kWh, but the cost of producing electricity from the system is highly dependent on the price of the solar collector.

Sign in / Sign up

Export Citation Format

Share Document