Optimal Design of Solar Energy Systems With Uncertain Data

1989 ◽  
Vol 111 (1) ◽  
pp. 10-15
Author(s):  
Richard W. Leigh
Keyword(s):  
Solar Energy ◽  
Uncertain Data ◽  
Mathematical Expression ◽  
Energy Systems ◽  
Weather Data ◽  
Life Cycle Costs ◽  
Total System ◽  
System Parameters ◽  
Fuel Prices ◽  
The Cost

The technical and economic characteristics of optimized solar energy systems can be expressed in a concise mathematical expression and this expression manipulated to show the dependence of total system cost on variables such as collector cost and efficiency, weather data, or the cost of the backup fuel. The lack of certain knowledge of future weather, fuel prices, and system performance implies that a system optimized, with respect to an assumed set of these data, may not be optimal with respect to the realities of operation. This formulation demonstrates clearly how the life cycle costs of the system increase as a result of errors in estimating various system parameters; in most cases, the costs of errors are not large over their expected ranges. In particular, most solar energy systems designed to satisfy a given load (that is, having a given nameplate capacity) should be optimized for the best weather they may encounter, and this design used wherever the systems are economically viable, as it is likely that the savings due to standardization will outweigh the relatively small costs of being imperfectly optimized.

scholarly journals A Modified Method to Generate Typical Meteorological Years from the Long-Term Weather Database

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Haixiang Zang ◽  
Qingshan Xu ◽  
Pengwei Du ◽  
Katsuhiro Ichiyanagi
Keyword(s):  
Relative Humidity ◽  
Solar Radiation ◽  
Solar Energy ◽  
Atmospheric Pressure ◽  
Energy Systems ◽  
Global Solar Radiation ◽  
Weather Data ◽  
Radiation Data ◽  
Modified Method

A modified typical meteorological year (TMY) method is proposed for generating TMY from practical measured weather data. A total of eleven weather indices and novel assigned weighting factors are applied in the processing of forming the TMY database. TMYs of 35 cities in China are generated based on the latest and accurate measured weather data (dry bulb temperature, relative humidity, wind velocity, atmospheric pressure, and daily global solar radiation) in the period of 1994–2010. The TMY data and typical solar radiation data are also investigated and analyzed in this paper, which are important in the utilizations of solar energy systems.

scholarly journals Análisis del Potencial Energético Solar Basado en Mediciones in Situ en el Municipio de Acacías - Meta

2018 ◽  
Vol 3 (1) ◽  
pp. 690
Author(s):  
Angel Alejandro Rodriguez Aya ◽  
John Alejandro Figueredo Luna ◽  
Juan Alejandro Chica García
Keyword(s):  
Solar Energy ◽  
Solar Power ◽  
Cost Benefit ◽  
Energy Systems ◽  
Energy System ◽  
Photovoltaic System ◽  
Cost Benefit Ratio ◽  
The Cost ◽  
The University

This research presents the preliminary results of the research entitled Design and implementation of a fixed and mobile photovoltaic system to capture the solar power, determining the cost-benefit ratio for the Acacías CEAD, a study that will determine the solar power that affects the University National Open and Distance - UNAD of the municipality of Acacías and deliver a study to determine the solar radiation of the area, in order to verify the potentiality and feasibility of installing solar energy systems in the University and nearby areas; It has been possible to determine that solar power in the area per m² is close to 45% of that measured by IDEAM (Hydrology, Meteorology and Environmental Studies Institute in Colombia), with a potential absorption of 331W per day in an area of 1m², which makes feasible a possible implementation of a solar energy system. Keywords: Solar power, solar energy, solar panel, energy efficiency.

scholarly journals Solar Energy Implementation At Household: Gaza Strip Case Study

2021 ◽  
Author(s):  
Hala J. El-Khozondar ◽  
Fady El-batta
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Gaza Strip ◽  
Electrical Power ◽  
Energy Systems ◽  
Environmental Benefit ◽  
Major Power ◽  
Electronic Questionnaire ◽  
The Government ◽  
The Cost

Abstract Background: Gaza Strip in Palestine is facing a major power deficiency problem due to local political situation. Thus, powering Gaza Strip without blockage whole day is a challenging task for decision maker. Lack of electrical power required inhabitants of Gaza Strip to implement solar energy systems to power their homes to replace or to complement the traditional sources of energy. To understand the success of solar system adoption at household in Gaza, authors built an electronic questionnaire. The dependent variable is chosen to be the adoption of energy and independent variables are environmental benefit, the cost of adoption of solar energy, and the market value of solar energy measured. The electronic questionnaire consists of two parts: part one consists of personal questions; second part is 22 items on a five- point Likert scale. The study sample consists of the 10% of the study population which are Al-Shifa Medical Complex employees (1819 employees). The electronic questionnaires are electronically circulated to the study sample. Then data is collected and analyzed using SPSS program. Results: The authors found that only 19.5% of the sample install solar energy systems on their houses. The results show that some factor including governorate in which employees are living, house ownership, total cost of energy/month, space to install the space to install the solar panels, and the desire to share the cost with neighbor unaffected the decision to use solar energy. Contrary, the type of house, knowledge of renewable energy impacted the decision. Conclusion: The adoption of solar energy in Gaza is limited. Type of house and knowledge of renewable energy are important to spread using of solar energy at houses in Gaza. Therefore, it is important to spread the knowledge of solar energy through universities by giving classes to all university students or by giving general lecture. To overcome the other two factors, the government should adopt the system and support the local inhabitants.

Modernization of Water Treatment System at Agricultural Enterprises Due to Introduction of Solar Energy

2020 ◽  
Vol 67 (1) ◽  
pp. 142-147
Author(s):  
Alina A. Aleksandrova ◽  
Maksim S. Zhuzhin ◽  
Yuliya M. Dulepova
Keyword(s):  
Mathematical Model ◽  
Water Treatment ◽  
Solar Energy ◽  
Energy Saving ◽  
Electric Energy ◽  
Solar Water Heater ◽  
Water Heater ◽  
Agricultural Enterprises ◽  
Solar Water ◽  
The Cost

Energy saving today is an integral part of the development strategy of agricultural organizations. Considerable attention is paid to the modernization and automation of technological processes in agricultural enterprises, which can improve the quality of work and reduce the cost of production. The direction of modernization is to reduce the consumption of electric energy by improving the water treatment system in livestock complexes. (Research purpose) The research purpose is to determine the potential of solar energy used in the Nizhny Novgorod region and to determine the possibility of its use for water heating in livestock complexes and to consider the cost-effectiveness of using a device to heat water through solar energy. (Materials and methods) Authors used an improved algorithm of Pixer and Laszlo, applied in the NASA project «Surface meteorology and Energy», which allows to calculate the optimal angle of inclination of the device for heating water. (Results and discussion) Designed a mock-up of a livestock complex with a solar water heater installed on the roof, protected by patent for invention No. 2672656. A mathematical model was designed experimentally to predict the results of the plant operation in non-described modes. (Conclusions) The article reveales the optimal capacity of the circulation pump. Authors have created a mathematical model of the device that allows to predict the water heating in a certain period of time. The article presents the calculations on the energy and economic efficiency of using a solar water heater. An electric energy saving of about 30 percent, in the economic equivalent of 35 percent.

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