Optimal solar energy collector system

Solar Energy ◽  
1975 ◽  
Vol 17 (2) ◽  
pp. 91-95 ◽  
Author(s):  
M. Kovarik
Keyword(s):  
Solar Energy ◽  
Collector System

scholarly journals The use of solar energy for the curing of ferrogeopolymer elements in the semiarid region

2019 ◽  
Vol 276 ◽  
pp. 01031 ◽  
Author(s):  
Partogi H Simatupang ◽  
Petrus Lubalu ◽  
Herry L Sianturi ◽  
Wilhelmus Bunganaen
Keyword(s):  
Solar Energy ◽  
Low Cost ◽  
Glass Plate ◽  
Energy Resource ◽  
Semiarid Region ◽  
Collector System ◽  
Good Potential ◽  
Dry Seasons ◽  
Wire Meshes ◽  
Potential Use

Kupang City in Timor Island of Indonesia, as a semiarid area, has abundant solar energy sources. Based on climatology data of Kupang City in 2013-2015, the minimum and maximum average temperatures in Kupang City range from 19.3-34.8oC. Besides, dry seasons last for about 8 months (April-November). This abundance of solar energy is a potential energy resource for the manufacturing of environmentally friendly ferrogeopolymer elements. Based on previous research, the production of geopolymer material can be done optimally with dry curing treatment at 60-80oC for less than 48 hours. Therefore, in this paper, a low-cost, energy efficient oven operated by a solar energy collector was developed. This paper describes a feasibility study of the use of solar energy for curing ferro-geopolymer elements. The ferro-geopolymer elements made were beams with length 600 mm, width 100 mm and height 100 mm. Wire meshes with 6x6mm of opening were used in 5 layers. The solar energy collector system used as an oven was a zinc coated drum which was painted black outwardly and was covered by a glass plate. Using this oven, it was possible to increase the ambient temperature by 1.62 to 2,37 times. Furthermore, this oven can also increase the flexure strength of ferrogeopolymer elements about ± 25.34%. This paper shows good potential use of solar energy in the manufacturing of ferro-geopolymer elements in the semiarid region.

Textile Drying Using Solar Process Steam

1979 ◽  
Author(s):  
M. E. Beesing
Keyword(s):  
High Temperature ◽  
Solar Energy ◽  
Steam Generator ◽  
Solar Collector ◽  
Drying Process ◽  
Parabolic Trough ◽  
Collector System ◽  
High Temperature Water ◽  
Process Heat ◽  
Temperature Water

This paper describes a solar energy collector system for providing process heat to a textile drying process in a WestPoint Pepperell mill in Fairfax, Alabama. The solar collector system uses 24 single axis tracking parabolic trough concentrating collectors to heat water in a high temperature water loop. The high temperature water fuels a steam generator to provide process steam. The process that was solarized is a textile drying process using cylindrical can dryers. The dryers are utilized in the slashing operation, a textile process where yarn is treated with sizing in preparation for weaving.

Dynamic Simulation Study on a Coal-Fired Power Plant Aided With Low-Temperature Solar Energy

2019 ◽  
Author(s):  
Xin Li ◽  
Yongliang Zhao ◽  
Ming Liu ◽  
Junjie Yan
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Solar Energy ◽  
Output Power ◽  
Large Scale ◽  
Solar Power ◽  
Flow Ratio ◽  
Design And Optimization ◽  
Collector System ◽  
Steam Extraction

Abstract The concept of coal-fired power generation aided with solar energy uses stable fossil energy to compensate the instability and intermittently of solar power and reduces the cost of concentrated solar power (CSP) by decreasing the large-scale heat storage and turbine systems of CSP. In this study, trough solar collector system (TSCS) was integrated into the low-pressure heater side of a 660 MW coal-fired power generation system. In the system in which the 6# LP heater is completely replaced by TSCS, the variation value of the steam extraction flowrate of the LP heaters and the turbine output power decrease with the reduction in loads from 100% to 60% THA, and the output power increases by approximately 1 MW under 100% THA. When TSCS completely replaces the 6# LP heater under the load of 75%, the effects of direct normal irradiance (DNI) increase and flow ratio decrease on the main operating parameters of solar-aided coal-fired power plant (SCPP) were studied. Results show that the step increase of DNI decreases the 5# steam extraction flowrate and increases the output power by nearly 3 MW. When the flow ratio decreases by 139.87 kg/s, the output power decreases by around 0.35 MW. The dynamic characteristics of SCPP under different parallel situations with the load of 75% were also studied. As the number of parallel stage increases, the decrement in 5# steam extraction flowrate and the increment in output power decrease. The response time also decreases. Our study aims to provide detailed references for the control system design and optimization of coal-fired power units aided with solar energy.

Optimal Utilization of Solar Arrays: Design and Implimentation of a Motorised Solar Energy Photovoltaic Array System

2009 ◽  
Vol 62-64 ◽  
pp. 533-536 ◽  
Author(s):  
E.U. Ubeku ◽  
S.O. Igbinovia
Keyword(s):  
Solar Cell ◽  
Solar Energy ◽  
Solar Panel ◽  
Stepper Motor ◽  
The Sun ◽  
Photovoltaic Array ◽  
Solar Arrays ◽  
Collector System ◽  
System A

In this paper a motorized solar energy collector system-a driver system that positioned the solar cell panel differently during day-time was design and implemented. The aim is to optimize the amount of solar energy that can be trapped from the sun using a solar cell panel. This is achieved by using a stepper motor, controlled by Atmel AT89C52 microcontroller, to align the panel such that all incident rays strike normal to the panel’s surface thereby maximizing the amount of solar energy that can be trapped from the sun. The alignment is time dependant. This model was implemented and tested and the results proved to be successful in maximizing the energy received from the sun than if the solar panel was fixed at a particular position.

Performance Analysis of Innovative Top Cooling Thermal Photovoltaic (TPV) Modules Under Tropics

2016 ◽  
Author(s):  
Swapnil Dubey ◽  
C. S. Soon ◽  
Sin Lih Chin ◽  
Leon Lee
Keyword(s):  
Solar Energy ◽  
Thermal Energy ◽  
Waste Heat ◽  
Heat Removal ◽  
Hot Water ◽  
Photovoltaic Module ◽  
Cell Temperature ◽  
Collector System ◽  
Pv Panel ◽  
Pv Module

The main focus area of this research paper to efficiently remove the heat generated during conversion of solar energy into electricity using photovoltaic (PV) module. The photovoltaic conversion efficiency of commercial available PV module varies in the range of 8%–20% depending on the type of solar cell materials used for the module construction, e.g. crystalline silicon, thin film, CIGS, organic, etc. During the conversion process, only a small fraction of the incident solar radiation is utilize by PV cells to produce electricity and the remaining is converted into waste heat in the module which causes the PV cell temperature to increase and its efficiency to drop. This thermal energy could be extract using air or water as a heat removal fluid to utilize in heating applications. The purpose of a solar photovoltaic module is to convert solar energy into electricity. The hybrid combination of photovoltaic module and thermal collector called Photovoltaic-thermal (PVT) module. Such PVT module combines a PV, which converts electromagnetic radiation (photons) into electricity, with a solar thermal module, which captures the remaining energy and removes waste heat from the PV module. Cooling of cells either by natural or forced circulation can reduce the PV cell temperature. The simultaneous cooling of the PV cells maintains their PV efficiency at a satisfactory level and offers a better way of utilizing solar energy by generating thermal energy as well. PVT system has higher overall efficiency as compared to separate PV and thermal collector. The heat output of a PVT module can be used for space heating or production of domestic hot water. This paper presents an innovative design of top cooling Thermal Photovoltaic (T-PV) module and its performance under outdoor weather condition of Singapore. T-PV collector is designed to flow fluid over the top of PV panel through a very narrow gap between the solar lens. This process improves heat removal process from PV panel, and hence, improves the electrical output of PV panel as compared to other PVT collector available in the market. By flowing the water from top of the PV panel will also provide better thermal efficiency. A T-PV collector system with storage tank, sensors, pump, flow meters, data logger and controls, have been installed at test-site located in Ngee Ann Polytechnic, Singapore. Performance analysis of T-PV collector system has been evaluated under the tropical climatic conditions of Singapore. It was found that T-PV module could produce additional electrical power as compared to standard PV panel of same capacity by operating at lower temperature. In addition to electricity, T-PV panel also generate the hot water up to 60 deg C at an average thermal efficiency of 41% for usage in residential and commercial buildings. The average thermal energy output was 3.1 kWh/day on typical day’s basis.

Experimental Investigation of Nano Particles Blended with Water on Solar Flat Plate Collector

2013 ◽  
Vol 768 ◽  
pp. 164-170
Author(s):  
P. Sivakumar ◽  
W. Christ Raj ◽  
N. Jaya Malathi ◽  
R. Balamurugan
Keyword(s):  
Solar Energy ◽  
Flat Plate ◽  
Performance Comparison ◽  
Nano Particles ◽  
Design Parameters ◽  
Collector System ◽  
Initial Cost ◽  
Flat Plate Collector ◽  
Operation Cost ◽  
Domestic Purpose

Heating of water for domestic purpose by making use of solar energy is essential and it is one of the effective ways of utilizing solar energy. Initial cost of solar water heating (SWH) system is high, but the operation cost is zero. This paper discusses on improving the performance of a flat plate solar energy collector by changing the design parameters of the number of riser tubes and the arrangement of riser tubes in zig-zag pattern from the existing flat plate collector system (FPC) and using the different working nanoparticles with base fluids like aluminium oxide mixed with water. Experiments were conducted using copper tube in headers and risers with two different configurations and maintain the same dimensions. The performance comparison was made for all the two types of collectors in closed loop. The performance shows that the efficiency of FPC with zig-zag arrangement of tubes (Z-Configuration) is higher than that of conventional FPC. Thus the newly presented FPCs system produces higher efficiency than the existing conventional flat plate collector system.

scholarly journals Uncertain Analysis of a Stationary Solar Compound Parabolic Concentrator PV Collector System Using Fuzzy Set Theory

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Hoe-Gil Lee ◽  
Singiresu S. Rao
Keyword(s):  
Solar Energy ◽  
Set Theory ◽  
Fuzzy Set ◽  
Fuzzy Set Theory ◽  
Uncertain Parameters ◽  
Membership Functions ◽  
Solar Pv ◽  
Compound Parabolic Concentrator ◽  
Collector System ◽  
Analysis Methodology

The uncertain analysis of fixed solar compound parabolic concentrator (CPC) collector system is investigated for use in combination with solar PV cells. Within solar CPC PV collector systems, any radiation within the collector acceptance angle enters through the aperture and finds its way to the absorber surface by multiple internal reflections. It is essential that the design of any solar collector aims to maximize PV performance since this will elicit a higher collection of solar radiation. In order to analyze uncertainty of the solar CPC collector system in the optimization problem formulation, three objectives are outlined. Seasonal demands are considered for maximizing two of these objectives, the annual average incident solar energy and the lowest month incident solar energy during winter; the lowest cost of the CPC collector system is approached as a third objective. This study investigates uncertain analysis of a solar CPC PV collector system using fuzzy set theory. The fuzzy analysis methodology is suitable for ambiguous problems to predict variations. Uncertain parameters are treated as random variables or uncertain inputs to predict performance. The fuzzy membership functions are used for modeling uncertain or imprecise design parameters of a solar PV collector system. Triangular membership functions are used to represent the uncertain parameters as fuzzy quantities. A fuzzy set analysis methodology is used for analyzing the three objective constrained optimization problems.

Thermodynamic Analysis of Solar Energy Utilization Combined With the Exploitation of the LNG Physical Exergy

1995 ◽  
Vol 117 (4) ◽  
pp. 333-335 ◽  
Author(s):  
G. Bisio ◽  
C. Pisoni
Keyword(s):  
Solar Energy ◽  
Thermodynamic Analysis ◽  
Energy Utilization ◽  
Collector System ◽  
Solar Energy Utilization ◽  
Energy And Exergy ◽  
Solar Air Collector

A solar air collector system combined with LNG vaporization is analyzed in terms of energy and exergy.

Study on Collector Efficiency of Flat-Plate-Type Evacuated Solar Collector to Get Hot Water Near 100°C

2010 ◽  
Author(s):  
Shigeki Hirasawa ◽  
Tsuyoshi Kawanami
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Solar Collector ◽  
Storage Tank ◽  
Heat Storage ◽  
Hot Water ◽  
Measured Temperature ◽  
Control Methods ◽  
Collector System ◽  
Collector Efficiency

We studied effects of parameters on collector efficiency of evacuated solar collector system to get hot water near 100°C. Change of temperature in the solar collector system is calculated for a daily change of solar radiation with 5 minutes cloud. Six operation-control methods are examined. Calculation results show that the effect of the control methods on average collector efficiency for one day is small as 1%. Best control method to minimize effect of the cloud on exit temperature fluctuation of the water is that the flow rate of the water is controlled proportional to the solar radiation. Two types of heat storage system are examined: a non-circulating type (supply new water and accumulate heated water in the heat storage tank) and a circulating type (circulating water from the heat storage tank). The non-circulating type is effective to use the solar energy in the daytime, and the circulating type is effective to use solar energy in the evening. Also, we measured temperature of a collector plate under actual solar radiation in a fine day.

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