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Tytuł:
Comparative analyses of residential building efficiency for AC and DC distribution networks
Autorzy:
Ahmad, Faraz
Dastgeer, Faizan
Gelani, Hasan E.
Khan, Sidra
Nasir, Mashood
Powiązania:
https://bibliotekanauki.pl/articles/2173601.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC distribution system
efficiency analysis
AC vs DC
residential buildings
solar PV
system dystrybucji prądu stałego
analiza wydajności
prąd zmienny
prąd stały
AC/DC
budynki mieszkalne
fotowoltaika
Opis:
The escalating prevalence of rooftop solar PVs and DC powered home appliances are the driving forces for the research in the field of DC distribution at residential level. The current research work presents comparative analyses of AC and DC distribution systems considering various scenarios for the specific purpose of efficiency/energy savings. A modern Bakersfield CA, USA home is considered for the analyses. The loads are classified according to the power demand. Rooftop solar PVs are also included in each residential building. Mathematical equations are devised for the efficiency analysis of residential buildings powered with AC as well as DC. The results reveal strong dependence of the efficiency values on the utilization/types of loads, efficiencies of the power electronic converters (PECs), solar capacity and seasonal conditions, as a function of the time of day. It is concluded that AC system presents better efficiency values as compared to the DC counterpart except during the time periods when solar power is available and when the penetration of variable speed drive (VSD) based loads is high.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; art. no. e136732
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analyses of residential building efficiency for AC and DC distribution networks
Autorzy:
Ahmad, Faraz
Dastgeer, Faizan
Gelani, Hasan E.
Khan, Sidra
Nasir, Mashood
Powiązania:
https://bibliotekanauki.pl/articles/2128137.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC distribution system
efficiency analysis
AC vs DC
residential buildings
solar PV
system dystrybucji prądu stałego
analiza wydajności
prąd zmienny
prąd stały
AC/DC
budynki mieszkalne
fotowoltaika
Opis:
The escalating prevalence of rooftop solar PVs and DC powered home appliances are the driving forces for the research in the field of DC distribution at residential level. The current research work presents comparative analyses of AC and DC distribution systems considering various scenarios for the specific purpose of efficiency/energy savings. A modern Bakersfield CA, USA home is considered for the analyses. The loads are classified according to the power demand. Rooftop solar PVs are also included in each residential building. Mathematical equations are devised for the efficiency analysis of residential buildings powered with AC as well as DC. The results reveal strong dependence of the efficiency values on the utilization/types of loads, efficiencies of the power electronic converters (PECs), solar capacity and seasonal conditions, as a function of the time of day. It is concluded that AC system presents better efficiency values as compared to the DC counterpart except during the time periods when solar power is available and when the penetration of variable speed drive (VSD) based loads is high.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; e136732, 1--9
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smart Cooling Controlled System Exploiting Photovoltaic Renewable Energy Systems
Autorzy:
Atieh, A.
Al Asfar, J.
Tawalbeh, N.
Shaqour, E.
Alsalhi, I.
Istaiteh, O.
Powiązania:
https://bibliotekanauki.pl/articles/123359.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
smart cooling system
solar system
energy management
cost analysis
Opis:
A smart cooling system to control the ambient temperature of a premise in Amman, Jordan, is investigated and implemented. The premise holds 650 people and has 14 air conditioners with the cooling capacity ranging from 3 to 5 ton refrigerant (TR) each. The control of the cooling system includes implementing different electronics circuits that are used to sense the ambient temperature and humidity, count the number of people in the premise and then turn ON/OFF certain air conditioner(s). The data collected by different electronic circuits are fed wirelessly to a microcontroller, which decides which air conditioner will be turned ON/OFF, its location and its desired set cooling temperature. The cooling system is integrated with an on-grid solar photovoltaic energy system to minimize the operational cost of the overall cooling system.
Źródło:
Journal of Ecological Engineering; 2018, 19, 2; 39-44
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza eksploatacyjna instalacji słonecznej pracującej na potrzeby przygotowania c.w.u. dla budynku wielorodzinnego
Analysis of use of solar panel installations heat water for the needs of inhabitants of the multifamily building
Autorzy:
Babiarz, B.
Borkowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/104522.pdf
Data publikacji:
2017
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
eksploatacja
instalacja słoneczna
kolektor słoneczny
koszty
analiza
serwisowanie
use
solar panel installation
solar collector
costs
analysis
Opis:
Celem niniejszej pracy jest przeprowadzenie analizy instalacji słonecznych pod kątem eksploatacyjnym. Zasadniczą część opracowania stanowi analiza istniejącej od 2005 r. instalacji słonecznej pracującej dla potrzeb przygotowania ciepłej wody użytkowej dla mieszkańców budynku wielorodzinnego. W pracy wykorzystano rzeczywiste dane eksploatacyjne z dziesięciu lat działania instalacji, udostępnione przez Spółdzielnię Mieszkaniową „ZODIAK” w Rzeszowie. Przeanalizowano koszty przygotowania ciepłej wody użytkowej oraz koszty serwisowe instalacji. Na koszty eksploatacyjne instalacji słonecznych składają się m.in.: koszty zużycia i przygotowania c.w.u., koszty zużycia energii elektrycznej przez pompy obiegowe instalacji słonecznych, oraz koszty serwisowania instalacji. Na podstawie niniejszej analizy można wysnuć szereg wniosków możliwych do wykorzystania w analizach techniczno-finansowych na etapie projektowania inwestycji w odnawialne źródła energii. Przeprowadzona analiza wykazała, iż instalacja słoneczna w znacznym stopniu obniża koszty przygotowania ciepłej wody użytkowej. Koszt przygotowania 1 m3 ciepłej wody użytkowej w analizowanym budynku wielorodzinnym w 2015 r. przy udziale instalacji słonecznej stanowił 67% kosztów podgrzewu ciepłej wody w budynku o podobnej kubaturze wykorzystującym ciepło z miejskiej sieci ciepłowniczej. Pompy obiegowe zastosowane w instalacjach słonecznych charakteryzują się stosunkowo małym zużyciem energii elektrycznej. Koszty serwisowe instalacji są niewielkie i zależą od wielkości instalacji, jej lokalizacji oraz budowy.
The purpose of this work was to analyzed the use of solar panel installations. In the thesis was evaluated performance of solar panel installation located in Rzeszow. In thesis used real data of ten years operation provided by Housing Association “ZODIAK” Rzeszow. This installation prepares water for the needs of inhabitants. Costs of preparing domestic hot water and service operations have been analyzed. Energy consumption by circulating solar pumps was determined. The costs of using of solar installations consist of among other: costs consumption and prepare domestic hot water, the cost of electricity consumption by circulating solar pumps, and service operations. On the basis of the following analysis can be draw conclusions which can be used in technical and financial analysis at the design stage investments in renewable energy sources. This analysis showed that solar installations reduce the cost of domestic hot water. The cost of preparing one cubic meter domestic hot water for the analyzed installations located in King Augusta Street in Rzeszow in 2015 was about 67% lower than in the case of a building with a similar size which supply of district heating. Costs of service operations of solar installations are small and depend on the size of the installation, construction, location and the way of using solar installations. Circulating solar pumps are characterized by low energy consumption. Regular service can help to reduce costs of solar installations and extend the working life of installations.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2017, 64, 1; 431-440
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic analysis of artificially roughened solar air heater with v-shaped ribs
Autorzy:
Bahuguna, Rahul
Chamoli, Sunil
Barthwal, Yogesh
Rana, Sumit
Gupta, Ashutosh
Bisht, Vijay Singh
Powiązania:
https://bibliotekanauki.pl/articles/2142836.pdf
Data publikacji:
2022
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
solar air heater
heat transfer
artificial roughness
economic analysis
life cycle savings
powietrzny kolektor słoneczny
wymiana ciepła
sztuczna chropowatość
analiza ekonomiczna
oszczędności w cyklu życia
Opis:
Due to the minimal transfer of heat from absorber plate to moving air in the duct, solar air heaters have low performance. One of the procedures to augment the heat transfer by substantial amount is by utilizing artificial roughness, by which the performance can be improved considerably. In this study, an economic investigation of solar air heater embedded with artificial roughness is accomplished numerically employing v-shaped roughness, with the objective of optimising life cycle solar savings. The non-dimensional parameters of roughness, namely, angle of attack (α), roughness pitch (p/e) and roughness height (e/Dh) are examined by varying temperature rise over the solar air heater (∆T) and solar radiations (I) for different economic parameters values i.e., cost of collector, cost of roughness elements, and cost of conventional fuel.
Źródło:
Acta Innovations; 2022, 44; 18-33
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of Polish patent applications in the solar energy technology with the use of text mining methodology
Autorzy:
Bęben, Karolina
Nowakowska, Marzena
Powiązania:
https://bibliotekanauki.pl/articles/27313482.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
solar energy patent analysis
patent documents processing
patent clustering
outliers detection
Polish Patent Office
analiza patentowa energii słonecznej
przetwarzanie dokumentów patentowych
grupowanie patentów
wykrywanie wartości odstających
Urząd Patentowy RP
Opis:
Purpose: Knowledge management belongs to the most important elements of organisational management, including manufacturing enterprises. Patent information plays an increasingly important role in this area. Identification of the main directions of invention activity may inspire new product and process ideas, and can help to improve existing solutions. The above is particularly important in the energy sector, which is currently struggling with increasing problems. In this context, solar energy is the subject of interest to inventive communities. The paper discusses patent applications related to solar energy, taking up the task of discovering the main tendencies of technological solutions in this area. Design/methodology/approach: In the work, a pilot study of the research aimed to indicate the directions of technological development in the field in Poland was undertaken. Shortened descriptions of selected patent documents from the Polish Patent Office (PPO) were the subject of the investigation. The descriptions were reduced to the form of a vector space model by using text mining tools. The exploration of such prepared data was done applying unsupervised text mining techniques. Hierarchical cluster analysis enabled the identification of groups of similar inventions. An algorithm to detect outliers within individual patent groups was also developed and applied. Findings: Five patent clusters were identified covering the following thematic areas: PV panel designs, PV panel component designs, the improvement of solar-heat conversion device performance, and solar collector designs. Six patent applications stood out thematically in four of the five clusters. Research limitations/implications: The research is limited to a selected number of patent documents form PPO. However, the presented method and research area are promising. It is planned to extend the analyses to a larger set of patent documents and solve the problem related to the language uniformity of patent applications along with merging data from various sources. In this aspect, a full patent description will be consider as well. Originality/value: In relation to solar energy issues, main patent areas and patent outliers that may be indicators of special interests of inventors were identified. In relation to methodology issues, new solutions within consecutive research steps were proposed.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2022, 162; 9--34
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How a river course influences the species richness and ecological requirements on two opposite riverbanks in a forest area
Autorzy:
Czarnecka, B.
Rysiak, A.
Chabudzinski, L.
Powiązania:
https://bibliotekanauki.pl/articles/58686.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
river course
species richness
species diversity
riparian landscape
solar radiation
moisture index
ecological requirement
opposite river bank
river bank
forest area
multivariate analysis
Opis:
The goal of the present research was to find correlations between the topographic attributes of a river valley and local ground-floor vegetation and its habitat requirements expressed by ecological indicator values (EIV), using the geographical information systems (GIS), digital elevation model (DEM), and multivariate statistical analysis. We paid special attention to the river course, which determines the differentiation in slope aspects and the amount of solar radiation reaching the ground surface. The model object was an almost latitudinal, ca. 4-km-long break section of the Sopot river, crossing the escarpment zone of the Central Roztocze Highlands, southeastern Poland. The main material comprised species lists (with estimated abundance) for each ca. 200-m-long section, according to the river valley course, separately for the left and right riverbanks, 40 sections altogether, ca. 15 000 vegetation records, and physical and chemical soil measurements. A 3-meter resolution DEM was derived from a 1:10 000 topographic map. We calculated the correlations between the topographic attributes of the valley, species richness, and the EIVs for all the species recognized in each section of the valley. We found 241 herb plant species in the ground-floor vegetation of the study area. We did not find significant differences between the two riversides (61 ±13 species per one section for the left and 63 ±17 for the right side). Thus, the parallel course of the river valley does not change the species richness on a more “sunny” and more “shiny” riverbank. However, this factor “cooperating” with other topographic attributes of the valley significantly differentiates the shape of species showing various requirements for basic habitat resources: light, moisture, soil trophy, reaction, dispersion, and organic-matter content.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complex trapezoid grating for light trapping in thin-film solar cells: super-fine structure
Autorzy:
Fang, Junfei
Gou, Yuchun
Deng, Jianping
Powiązania:
https://bibliotekanauki.pl/articles/1835802.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
light trapping
complex trapezoid grating
rigorous coupled-wave analysis
solar cell
Opis:
The research of the optimal surface structure has attracted considerable interest because of its potential application in light trapping in thin-film solar cells (TFSCs). In this paper, a super-fine structure named complex trapezoid grating is proposed to improve the optical absorption comparing to the conventional simple trapezoid grating in a-Si:H TFSCs. The numerical calculation by utilizing rigorous coupled-wave analysis (RCWA) is conducted to obtain the optical absorption of the structured surface. The results demonstrate that, compared to a planar slab, the optimized-simple trapezoid grating shows 97% enhancement of power conversion efficiency η while the complex trapezoid grating shows 131% enhancement. Obviously, the complex trapezoid grating exhibits a better performance than the simple grating, which is due to the perfect antireflective effect and microcavity resonance effect. The angular response of the optical absorption in a-Si:H TFSCs was also investigated. The results further indicate that it is a better way to select the complex trapezoid grating in improving the optical absorption of silicon-based TFSCs.
Źródło:
Optica Applicata; 2020, 50, 3; 391-400
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statystyczna analiza nośników energii ze źródeł odnawialnych w Polsce i wybranych krajach Unii Europejskiej
The Market of Renewable Energy Sources in Poland - Statistical Analysis
Autorzy:
Frodyma, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/587688.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Biogaz
Biomasa
Energia elektryczna
Energia geotermalna
Energia słoneczna
Energia wiatru
Energia wody
Odnawialne źródła energii
Produkcja energii
Przestrzenna analiza statystyczna
Biogas
Biomass
Electric power
Energy production
Geothermal energy
Renewable energy sources
Solar energy
Spatial statistical analysis
Water energy
Wind energy
Opis:
The ongoing, dynamic development of civilization is associated with the growing demand for energy. The use of traditional energy sources such as coal, oil and natural gas is not only associated with an increase in environmental pollution, but also causes the depletion of natural resources. Renewable sources of energy are an alternative to non-renewable energy sources such as fossil fuels. The energy from renewable sources in Poland includes the energy from direct using solar radiation, wind, geothermal stores (from the inside of the earth), water and energy generated from solid biomass, biogas and liquid biofuels. The main objective of this article is to assess the changes occurring in the market of renewable energy in Poland. The changes in the structure of obtaining energy from renewable sources in Poland will be discussed and the linear ordering of countries according to the proportion of energy from renewable sources in total electricity production will be conducted on the basis of available data. The paper presents also the structure of production of electricity from renewable energy sources in Poland compared to other European Union countries.
Źródło:
Studia Ekonomiczne; 2014, 203; 68-78
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comprehensive review on energy and exergy analysis of solar air heaters
Autorzy:
Ghritlahre, Harish Kumar
Sahu, Piyush Kumar
Powiązania:
https://bibliotekanauki.pl/articles/240351.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solar energy
energy
exergy analysis
solar air heater
thermal performance
Opis:
For economic growth of nation, the energy plays an important role. The excessive use of fossil fuels results the increase in global warming and depleting the resources. Due to this reason, the renewable energy sources are creating more attraction for researchers. In renewable energy sector, solar energy is the most abundant and clean source of energy. In solar thermal systems, solar air heater (SAH) is the main system which is used for heating of air. As it is simple in construction and cheaper in cost, it is of main interest for the researchers. The concept of first law and second law of thermodynamics is used for the study of the energy and exergy analysis respectively. The energy analysis is of great importance for the study of process effectiveness while the exergetic analysis is another significant concept to examine the actual behavior of process involving various energy losses and internal irreversibility. For efficient utilization of solar energy, the exergy analysis is very important tool for optimal design of solar air heaters. The aim of the present work is to review the works related to energy and exergy analysis of various types of solar air heaters and to find out the research gap for future work.
Źródło:
Archives of Thermodynamics; 2020, 41, 3; 183-222
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An experimental study of solar air heater using arc shaped wire rib roughness based on energy and exergy analysis
Autorzy:
Ghritlahre, Harish Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1955008.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
artificial roughness
energy analysis
exergy analysis
solar air heater
Opis:
In the present study, energy and exergy analysis has been evaluated for roughened solar air heater (SAH) using arc shaped wire ribs. To achieve this aim, two different types of flow arrangement have been considered. These arrangements are: apex upstream flow and apex downstream flo. In addition to this, a smooth duct SAH has been used for comparative study. The experiments were performed using the mass flow rate of 0.007– 0.022 kg/s on outdoor condition at Jamshedpur city of India. The absorber plate roughness geometry has been designed with relative roughness height 0.0395, rib size 2.5 mm, relative roughness pitch 10 and arc angle 60◦ . The energetic and exergetic performances have been examined on the basis of the first and second law of thermodynamics. According to the results, there is observed to be the maximum thermal efficiency and exergy efficiency as 73.2% and 2.64%, respectively, for apex upstream flow SAH at 0.022 kg/s, while, at same mass flow rate the maximum thermal efficiency and exergy efficiency is obtained as 69.4% and 1.89%, respectively, for apex downstream flow SAH. In addition to this, results reported that the maximum outlet temperature and temperature difference observed at lower mass flow rate. Also examined the outlet air temperature of SAH with various mass flow rates is very important for both analysis.
Źródło:
Archives of Thermodynamics; 2021, 42, 3; 115-139
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semantic hashing for fast solar magnetogram retrieval
Autorzy:
Grycuk, Rafał
Scherer, Rafał
Marchlewska, Alina
Napoli, Christian
Powiązania:
https://bibliotekanauki.pl/articles/2147145.pdf
Data publikacji:
2022
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
content-based image retrieval
image descriptor
solar analysis
Opis:
We propose a method for content-based retrieving solar magnetograms. We use the SDO Helioseismic and Magnetic Imager output collected with SunPy PyTorch libraries. We create a mathematical representation of the magnetic field regions of the Sun in the form of a vector. Thanks to this solution we can compare short vectors instead of comparing full-disk images. In order to decrease the retrieval time, we used a fully-connected autoencoder, which reduced the 256-element descriptor to a 32-element semantic hash. The performed experiments and comparisons proved the efficiency of the proposed approach. Our approach has the highest precision value in comparison with other state-of-the-art methods. The presented method can be used not only for solar image retrieval but also for classification tasks.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2022, 12, 4; 299--306
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Savitzky-Golay method for power output data set
Autorzy:
Gulkowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1940714.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska
Tematy:
photovoltaics
solar energy
time series
PV data analysis
Opis:
The power output of a PV system changes in time during the day and strongly depends on the location and orientation of the photovoltaic module as well as on seasonal conditions. Clouds occurring during a partly cloudy day are the reason why this data is very irregular and difficult to analyze in terms of obtaining energy. The Savitzky-Golay method was applied for the power output data obtained for sunny, cloudy and partly cloudy days in order to determine the average level of power produced by a PV system at a given location. The total amount of energy was analyzed for each case.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2015, 19, 1; 25-34
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Analysis of Some Meteorological Variables Data for Sokoto and its Vicinity
Autorzy:
Hassan, Z.
Ajibola, T. B.
Powiązania:
https://bibliotekanauki.pl/articles/1193862.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Gumbel
Meteorological variables
Normal
Pearson and Log-pearson type III
Statistical Analysis
relative humidity
solar radiation
some meteorological variables
Opis:
This study aims at studying the characteristics of some meteorological variables in Sokoto and its vicinity using probability distribution models. The thirty one (31) years data (i.e 1980-2010) were collected at Nigerian Meteorological Agency (Nimet) Oshodi and the data were subjected to various probability distribution analyses in order to resolute the best fit probability functions for each meteorological variables. The variables measured consist of Relative humidity, Rainfall, Temperature, Sunshine hours, Solar radiation, wind speed and Evaporation pitche. Whereas the probability distribution models adopt were Normal, Gumbel, Pearson type III and Log-Pearson type III distribution functions. Numerical equation were recognized and used to forecast the variables. Goodness of fit tests such as chi-square, correlation coefficient and coefficient of determination were carried out to obtain the reliability of the forecasted values. The model that satisfies the statistical tests conditions mostly was selected as the best fit model. The study revealed that Rainfall, wind speed, evaporation pitche are best fitted by Log-pearson type III probability distribution model, whereas the Relative humidity, solar radiation, sunshine hours and temperature the best model is Gumbel probability distribution.
Źródło:
World Scientific News; 2015, 24; 8-17
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimising the selection of batteries for photovoltaic applications
Optymalizacja doboru akumulatorow do zastosowan fotowoltaicznych
Autorzy:
Knaga, J.
Szul, T.
Powiązania:
https://bibliotekanauki.pl/articles/792139.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
battery capacity
autonomous solar system
photovoltaic module
photovoltaic system
solar radiation energy
polycrystalline structure
analysis
meteorological station
calculation
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

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