Optimal Design of Compound Parabolic Concentrator Solar Collector System

2014 ◽  
Vol 136 (9) ◽  
Author(s):  
Singiresu S. Rao ◽  
Hoe-Gil Lee ◽  
Yi Hu
Keyword(s):  
Solar Energy ◽  
Solar Collector ◽  
Optimization Problems ◽  
Diffuse Radiation ◽  
Problem Formulation ◽  
Solar Collectors ◽  
Beam Radiation ◽  
Compound Parabolic Concentrator ◽  
Collector System ◽  
Unit Energy

The multi-objective optimum design of stationary compound parabolic concentrator (CPC) solar collectors is considered. The clear day solar beam radiation and diffuse radiation at the location of the solar collector are estimated. Three objectives are considered in the optimization problem formulation: maximization of the annual average incident solar energy, maximization of the lowest month incident solar energy and minimization of the cost. A modified game theory (MGT) methodology is used for the solution of the three-objective constrained optimization problems. When compared to the optimum results of flat plate solar collectors, the CPC solar collector could significantly reduce the value of cost per unit energy ratio. Parametric studies are conducted with respect to changes in land price. The present study is expected to help designers in creating optimized solar collectors based on specified requirements.

Multi-Objective Optimal Design of Stationary Flat-Plate Solar Collectors Under Probabilistic Uncertainty

2010 ◽  
Vol 132 (9) ◽  
Author(s):  
Singiresu S. Rao ◽  
Yi Hu
Keyword(s):  
Solar Energy ◽  
Flat Plate ◽  
Optimization Problem ◽  
Diffuse Radiation ◽  
Problem Formulation ◽  
Solar Collectors ◽  
Beam Radiation ◽  
Mean Values ◽  
Probabilistic Uncertainty ◽  
Multi Objective

The multi-objective optimum design of stationary flat-plate solar collectors under probabilistic uncertainty is considered. The clear day solar beam radiation and diffuse radiation at the location of the solar collector are estimated. Three objectives are considered in the optimization problem formulation: maximization of the annual average incident solar energy, maximization of the lowest month incident solar energy, and minimization of the cost. The game theory methodology is used for the solution of the three objective constrained optimization problem. A parametric study is conducted with respect to changes in the standard deviation of the mean values of random variables and probability of constraint satisfaction. The present study is expected to help designers in creating optimized solar collectors based on specified requirements.

Optimization of Stationary Flat-Plate Solar Collectors

2015 ◽  
Author(s):  
Singiresu S. Rao
Keyword(s):  
Game Theory ◽  
Solar Energy ◽  
Flat Plate ◽  
Solar Collector ◽  
Probabilistic Approach ◽  
Design Parameters ◽  
Theory Approach ◽  
Solar Collectors ◽  
Beam Radiation ◽  
The Game Theory

The optimum design of stationary flat-plate solar collectors is considered using the game theory approach for multiple objectives. The clear day solar beam radiation and diffuse radiation at the location of the solar collector are estimated. Three objectives are considered in the optimization problem formulation: maximization of the annual average incident solar energy, maximization of the lowest month incident solar energy and minimization of the cost. The game theory solution represents the best compromise in terms of the supercriterion selected. Because some design parameters such as solar constant, altitude, typical day of each month and most of the design variables are not precisely known, a probabilistic approach is also proposed in this work. The results obtained by the determinist and probabilistic approaches are compared. It is found that the absolute value of each objective function decreases with an increase in either the probability of constraint satisfaction or the coefficient of variation of the random variables. This work represents the first work aimed at the application of multi-objective optimization strategy, particularly the game theory approach, for the solution of the solar collector design problem.

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.

Review on Solar Collector for Agricultural Produce

2018 ◽  
Vol 9 (1) ◽  
pp. 414 ◽  
Author(s):  
Ahmad Fudholi ◽  
Kamaruzzaman Sopian
Keyword(s):  
Solar Energy ◽  
Thermal Energy ◽  
Solar Collector ◽  
Energy Systems ◽  
Exergy Efficiency ◽  
Solar Collectors ◽  
Agricultural Produce ◽  
Essential Components ◽  
Energy And Exergy ◽  
Solar Air Collector

<span>Among the most important components of solar energy systems, solar collectors are devices that receive solar energy and convert it into thermal energy, as most essential components of solar dryer. This review presents description and previous work performed on performances of solar air collector for agricultural produce. In addition, various solar collectors are classified and described. Solar air collectors for drying application of agricultural produce are presented and summarize. The energy and exergy efficiency of the solar air collector ranges from 28% to 62% and from 30% to 57%, respectively. </span>

DIFFERENCES IN THE CONCENTRATION OF SOLAR ENERGY INVESTMENTS USING PHOTOVOLTAIC PANELS AND SOLAR COLLECTORS IN LUBELSKIE AND MAZOWIECKIE VOIVODSHIPS’ MUNICIPALITIES

2018 ◽  
Vol XX (1) ◽  
pp. 73-80 ◽  
Author(s):  
Anna Maria Klepacka
Keyword(s):  
Solar Energy ◽  
Rural Development ◽  
Solar Collector ◽  
Renewable Energy Sources ◽  
Development Program ◽  
Solar Collectors ◽  
Photovoltaic Panel ◽  
Photovoltaic Panels ◽  
Percentage Share ◽  
Total Capacity

The paper emphasizes the differences in the concentration of investments with the use of photovoltaic panels and solar collectors in voivodships with significant potential for using solar energy. The subject of the paper addresses, among others, the significant changes in renewable energy sources (RES) and EU subsidies that affect the economics of solar micro-installations in Poland. The study applied data from the Ministry of Agriculture and Rural Development, which included completed operations under the rural development program (RDP) for the period 2007-2013. The percentage share of the number of photovoltaic panel installations in Lubelskie and Mazowieckie Voivodships constituted 22% of that type of investments in the country (13% and 9% respectively, with a total capacity of 2,634 kW). However, in the case of the number of solar collector installations, the percentage share in Lubelskie and Mazowieckie Voivodships accounted for 44% of such installations in Poland (29% and 15%, respectively, with a total capacity of 4,239 kW). The results confirm the view that the location is an important determinant of photovoltaic panel and solar collector installations in Poland as shown in the examined voivodships characterized by the favorable solar radiation conditions.

System Design of Testing System for Truck-Mounted Solar Collector

2012 ◽  
Vol 562-564 ◽  
pp. 578-582
Author(s):  
Yuan Chao Deng ◽  
Yu Ning Zhong ◽  
Tao He
Keyword(s):  
Solar Energy ◽  
Heat Pipe ◽  
Solar Collector ◽  
System Stability ◽  
Testing System ◽  
Solar Collectors ◽  
Water Heaters ◽  
Reduced Volume ◽  
Solar Water Heaters ◽  
Force Calculation

The truck-mounted solar collector testing system is a flexible and convenient testing device. However design of thus a system is much more difficult than that of the fixed solar collector testing system, because it needs consideration in every respect so as to make sure the following: accurate testing, accommodation of the reduced volume of the testing system, stability of the testing system, addition of a removable device and so on. This article explores the systematic design of the truck-mounted solar collector testing system, points out the design issues to be considered, propose an appropriate design plan, and finally conducts the main force calculation. Solar energy is one of the cleanest sources; it is green and pollution-free. Today, environmental pollution is getting worse and worse; thus application of solar energy is becoming more extensive. A solar collector is defined as any of various devices that absorb the solar radiation and deliver the heat energy to the medium of heat transfer device. Solar collectors are not a direct consumer-oriented product, but key components that form various solar thermal systems, such as solar water heaters, solar energy dryers, solar industrial heaters and so on, of which the solar collectors are a core part of the system. At present solar heat pipe collectors and collector plates are the two most widely used products of solar collectors. Factory productions of such products are subject to inspection before they can be put on the market. Currently product testing of this kind is performed collectively in fixed locations; consequently, it is vulnerable to the geographical conditions, climate changes, and other factors in the location. A truck-mounted solar collector testing system is a system that integrates both testing systems, heat pipe collectors and collector plates, in a vehicle, which can be driven into the manufacturers that produce heat pipes and/or heat plates or other places where testing conditions can be met according to the requirements. By doing so, the problems associated with the fixed testing system can be solved. However, design of truck-mounted type solar collector testing system is much more difficult than that of fixed solar collector testing system. In addition to testing accuracy, it must also take the reduced volume of the testing system into account to ensure that the system can be accommodated into a smaller space of the vehicle. Furthermore, the stability of the testing system must be assured. Finally a removable device needs to be added to the system for convenience. In the following, we show our design of the truck-mounted solar collector testing system and calculations for the related stress analysis.

scholarly journals Potential Use of Nanofluids in Solar Collectors: A Review

2020 ◽  
Vol 12 (01) ◽  
pp. 32-36
Author(s):  
Mangesh Gupta ◽  
Ram Bilas Prasad
Keyword(s):  
Heat Transfer ◽  
Solar Energy ◽  
Solar Collector ◽  
Solar Collectors ◽  
Review Of The Literature ◽  
Heat Transfer Medium ◽  
Potential Use

Solar energy is clean and easily available everywhere. It is trapped by a device called a solar collector. Solar collectors are used to utilize solar energy. Generally, the performances of the solar collector are low. Nanofluid is used in solar collectors to boost up the performance of the solar collector. This paper presents a review of the literature on the role of nanofluids in various types of solar collectors. It is found that the performance of the solar collector improves by using nanofluids as a heat transfer medium.

scholarly journals Theoretical and Experimental Investigations of Cylindrical Air-Heating Solar Collector

2016 ◽  
Vol 53 (3) ◽  
pp. 11-21
Author(s):  
I. Pelece ◽  
P. Shipkovs
Keyword(s):  
Solar Energy ◽  
Solar Collector ◽  
Experimental Investigations ◽  
The Sun ◽  
Length Of Day ◽  
Solar Collectors ◽  
New Methods ◽  
Air Heating ◽  
Low Latitudes ◽  
Daily Energy

Abstract Solar energy is used not only at low latitudes, where it is available at large amounts, but also at higher latitudes, where height of sun and irradiance are significantly lower. On the other hand, the length of day at higher latitudes is longer in summer than at low latitudes, and also the path of the sun is longer. The present research deals with seeking for new shapes of solar collectors capable of receiving more solar energy. For designing and evaluating new shapes of solar collectors, it is necessary to have new methods for simple calculations of energy received from the sun by surface of any shape and direction. Such a method is explained in the present paper. Based on calculations by the proposed method, a new form of solar collector – a cylindrical collector – has been worked out. This collector is intended for air heating, but main principles can also be used for water heating, and even for photovoltaics. A cylindrical collector receives more energy in the morning and evening than a flat one, but at midday power of both collectors is equal, if effective areas are equal. Daily energy sum of the cylindrical solar collector is 1.5 times greater than that of the flat one.

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.

scholarly journals A Theoretical Optimum Tilt Angle Model for Solar Collectors from Keplerian Orbit

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4454
Author(s):  
Tong Liu ◽  
Li Liu ◽  
Yufang He ◽  
Mengfei Sun ◽  
Jian Liu ◽  
...  
Keyword(s):  
Data Analysis ◽  
Solar Energy ◽  
Tilt Angle ◽  
Solar Collector ◽  
A Priori ◽  
Local Area ◽  
The Sun ◽  
Solar Collectors ◽  
Solar Altitude ◽  
Complete Set

Solar energy has been extensively used in industry and everyday life. A more suitable solar collector orientation can increase its utilization. Many studies have explored the best orientation of the solar collector installation from the perspective of data analysis and local-area cases. Investigating the optimal tilt angle of a collector from the perspective of data analysis, or guiding the angle of solar collector installation, requires an a priori theoretical tilt angle as a support. However, none of the current theoretical studies have taken the real motion of the Sun into account. Furthermore, a complete set of theoretical optimal tilt angles for solar energy is necessary for worldwide locations. Therefore, from the view of astronomical mechanics, considering the true orbit of the Sun, a mathematical model that is universal across the globe is proposed: the Kepler motion model is constructed from the solar orbit and transformed into the local Earth coordinate system. After that, the calculation of the optimal tilt angle solution is given. Finally, several examples are shown to demonstrate the variation of the optimal solar angle with month and latitude. The results show that for daily fixed solar collectors, the altitude angle of the collector should be about 6° above the noon solar altitude angle in summer and 6° lower in winter. For annual fixed collectors, the tilt angle should be slightly higher than the latitude. In summary, this study demonstrates that when a location is specified, this model can be used to calculate the theoretical optimum tilt angle of solar collectors for that position.

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