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Wyświetlanie 1-15 z 103
Tytuł:
Pasywne pozyskiwanie energii
Passive solar system
Autorzy:
Gintowt, J.
Powiązania:
https://bibliotekanauki.pl/articles/363002.pdf
Data publikacji:
2007
Wydawca:
Instytut Fizyki Budowli Katarzyna i Piotr Klemm
Tematy:
pasywny system słoneczny
promieniowanie słoneczne
passive solar system
solar radiation
Opis:
Analizowano wartość zysków energii dla pasywnego systemu słonecznego w postaci przegrody pionowej i poziomej w budynku jednorodzinnym oraz porównano wynik z tym samym budynkiem ale bez pasywnego pozyskania energii. Porównano wyniki zysków energetycznych obliczonych dla promieniowania słonecznego przyjętego jako wartość średnia w ciągu dnia i jako wartość godzinowa.
The paper presents mathematical model of the passive solar system. Building using the passive solar system consist of internal partition walls and stons floor (between ex- ternal and partition walls) in the ground floor and internal breaks walls in the garret. Mathematical analysis apply to solar gain as a stored heat direct passive solar system, part of seasonal heating requirement.
Źródło:
Fizyka Budowli w Teorii i Praktyce; 2007, T. 2; 61-66
1734-4891
Pojawia się w:
Fizyka Budowli w Teorii i Praktyce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of the Baszkówka and Mt. Tazerzait chondrites: genetic conclusions based on astrophysical data and the mineralogical and petrological data
Autorzy:
Pilski, A. S.
Przylibski, T. A.
Zagożdżon, P. P.
Powiązania:
https://bibliotekanauki.pl/articles/2059300.pdf
Data publikacji:
2001
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
meteorites
chondrites
solar system
asteroids
asteroid-collisions
Opis:
The L5 chondrites Baszkówka and Mt. Tazerzait are characterised. Their astronomical, mineralogical and petrological characteristics confirm that these meteorites are similar. They could be derived from the same parent body, though from the different depths below its surface. A third meteorite - the Tjerebon - might have arisen from the same swarm of meteoroids. The parent body to these meteorites in the asteroid belt can not be established at present. The porosity, of these chondrites suggests that they formed close to the surface of their parent asteroid. The process of formation of the parent rock of the Baszkówka chondrite is similar in some respects to sedimentation of a weakly compacted terrestrial sandstone. Thus, a two-stage geological history may be envisaged: firstly formation of the component minerals and mineral aggregates of this meteorite. Then, later in a different environment, the accretion of fragments of this parent material, together with a small amount of matrix, into a strongly porous sedimentary rock.
Źródło:
Geological Quarterly; 2001, 45, 3; 331-342
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Productivity Enhancement of a Double Slope Solar Still Coupled with a Solar System
Autorzy:
Al-Qadami, Ebrahim Hamid Hussein
Abdurrasheed, Abdurrasheed S.
Mustaffa, Zahiraniza
Amran, Y.H. Mugahed
Yusof, Khamaruzaman W.
Ahsan, Amimul
Powiązania:
https://bibliotekanauki.pl/articles/123539.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
active solar still
solar still productivity
desalination
solar system
passive solar still
Opis:
Water shortage is rising to become a global challenge due to the variations in climate change and population increment. Converting the seawater to potable water using the desalination technology is among the existing options highlighted by researchers. However, these processes are expensive and require much energy to operate. The solar desalination technology was reported as highly adequate since it utilizes the natural sunlight and the simple concepts of evaporation and condensation to produce the drinking water. The main challenge to date is the low productivity of the technology, which must be adequately improved in order to enhance productivity and optimize performance. In this study, the productivity and efficiency of conventional double slope solar still were assessed using a solar system. Two solar still models (active and passive) were fabricated with the same evaporation and condensation areas. The troughs were made of stainless steel with dimensions of 50×32 ×5 cm. In turn, while the cover was made of glass with dimensions of 48×60×0.3 cm and the inclination angle was 60°. In addition, the solar system consisted of two solar panels with 50 W capacity each, one battery of 100 Ah – 12 V, a charging controller of 30 A, and a single immersed DC water heater of 50 W – 12 V capacity. Both models were tested simultaneously for two sunny days, 24 hours each. The results showed that the water productivity of the active solar still was 55% higher than that of the passive solar still. On 15th July, the total amounts of solar still productivity were 7.85 L/m2/d and 19.3 L/m2/d for active and passive stills, respectively. This is due to the existence of the heating element in the active still which allowed it to produce water for 24 hours continuously. Moreover, the trough temperature was found to be the highest for both models, because it was made from steel. Finally, the produced water in both cases was found to be directly proportional to such parameters as solar radiation intensity and ambient temperature.
Źródło:
Journal of Ecological Engineering; 2020, 21, 4; 255-263
2299-8993
Pojawia się w:
Journal of Ecological Engineering
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:
Solar air conditioning system using desiccant wheel technology as a solution for Iraq
Autorzy:
Al-Ahmedi, Karrar
Powiązania:
https://bibliotekanauki.pl/articles/132049.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
cooling
solar electric cooling system
solar thermal cooling system
Opis:
The electrical energy consumption in Iraq has increased sharply in the past few years. Modern energy efficient technologies are desperately needed for the national energy policy. The main purpose of this paper is to analyze the various cooling systems, using the readily available solar energy to cool down the buildings in Iraq during hot weather days. This paper presents the best solar cooling system which can be installed in Iraq for solar cooling. It also focuses on the type of thermally driven system which can be used for solar cooling. It is fact that many buildings in Iraq are designed far away from being energy efficient, hence this paper focuses on the standards which can be developed and can be used in the future on residential buildings from the energy point of view, with a suggestion to establish such solar cooling projects in Iraq. Systems have been used successfully in northern Europe and a number of studies have demonstrated that solar energy can be used to drive the system in this region. However, to date, desiccant cooling has not been used in Iraq. This paper presents the results of a study, in which a solar desiccant cooling model will use to evaluate the potential for using solar power to drive a desiccant cooling system in Iraq. The study demonstrates that solar desiccant cooling is feasible in Iraq, provided that the latent heat gains experienced are not excessive. However, if the relative humidity experienced are too high then desiccant cooling becomes impracticable simply because the regeneration temperatures required are excessive.
Źródło:
Modern Engineering; 2019, 2; 88-93
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Codes in the itineraries of the planets of the Solar System
Autorzy:
Kurić, L.
Powiązania:
https://bibliotekanauki.pl/articles/411808.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
solar system
planetary code
orbital code
cosmic codes
Opis:
Cosmos can be viewed from the perspective of the most advanced program, cyber and information systems and laws. Digital language Cosmos has a myriad of constants and variables, matrices, functions, vectors and determinants, which are coded information about the creation and functioning of our physical world in which we live. These are: Planetary orbits, Orbital Motion, Orbital planes, Orbital period Specifying orbits, Orbital perturbations, astrodynamics, Earth orbits, etc. The heavenly bodies move along a particular path. They have their own Perihelion and Aphelion. They have to move much on that path because the cosmic laws of the digital language does not allow them to move along another path. There is no dilemma and can not be. Evidence that follow testify and confirm that there is indeed a universal language for an exact description of which can be used systems theory and cybernetics.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 12; 31-50
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lodowe meteoryty, kosmiczne galarety i kamienie jak pył?
Ice meteorites, cosmic jelly and rocks as a dust?
Autorzy:
Strzeja, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1032689.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
cosmic jelly
dust
ice meteorites
meteorites
the Solar System
Opis:
This article is appeared a problem of meteorites classification and tried to connect interpretation and explanation of other phenomenon which are situated on the border between science and fiction. The conventional classification of meteorites indexed them as: (1) stony meteorites, (2) stony-iron meteorites and (3) iron meteorites. The matter of the Solar System could have various forms and its very varied in relation according to their physical, chemical and mineralogical aspects. In compliance with the above, the author tried to extend the classification by added e.g. ice meteorites, which are recognized in Russian literature. Sometimes others, not classified phenomenon are described as “colorful rains”, “jelly matter”, gas-dust objects or sudden, local darkness. As an evidences that could confirm the main theses of the author, an examples of literature are quoted. All of them should be supported by science investigations which are limited by rare frequency of the phenomena occurrence. By better description of small and different portions of cosmic matter, we could understand the Solar System and its laws.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2009, 1; 129-136
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital Table of Solar System
Autorzy:
Kurić, L.
Powiązania:
https://bibliotekanauki.pl/articles/412375.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Digital table of Solar system
orbital code
perihelion and aphelion
Opis:
This paper discusses cyberinformation studies of the Solar System, in particular the identification of scientific terminology that could describe this phenomenon, that is, the study of Solar System, as well as the relationship between the astronomical language of Solar System and theoretical aspect of this system and cybernetics. The result of this research show that there is a matrix code for Solar System. It also shows that the coding system within the planetary language gives detailed information, not only on the planetary “record“, but also on its structure, configuration and its various shapes. The issue of the existence of a planetary code and coding of the individual structural planets of this system are discussed. Is the planetary information characterized only by physical, or also by cyberinformation principles? The potential effects of physical and Orbital characteristics, as well as cybernetic and information principles, on the atronomical basis of Solar System are also investigated. This paper discusses new methods for developing astronomy technologies, in particular more advanced digital technology based on programming, cybernetics, and informational laws and systems, and how this new technology could be useful in astronomy, bioinformatics and other natural sciences.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 202-213
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of solar photovoltaic power generation system in maritime vessels and development of maritime tourism
Autorzy:
Shi, Y.
Luo, W.
Powiązania:
https://bibliotekanauki.pl/articles/259144.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
solar photovoltaic system
ship
photovoltaic control system
Opis:
The use of new energy generation technologies such as solar energy and electric propulsion technologies to form integrated power propulsion technology for ships has become one of the most concerned green technologies on ships. Based on the introduction of the principles and usage patterns of solar photovoltaic systems, the application characteristics of solar photovoltaic systems and their components in ships are analyzed. The important characteristics of the marine power grid based on solar photovoltaic systems are explored and summarized, providing a basis for future system design and application. Photovoltaic solar cells are made using semiconductor effects that convert solar radiation directly into electrical energy. Several such battery devices are packaged into photovoltaic solar cell modules, and several components are combined into a certain power photovoltaic array according to actual needs, and are matched with devices such as energy storage, measurement, and control to form a photovoltaic power generation system. This article refers to the basic principle and composition of the land-use solar photovoltaic system, and analyzes the difference between the operational mode and the land use of the large-scale ocean-going ship solar photovoltaic system. Specific analysis of large-scale ocean-going ship solar photovoltaic system complete set of technical route, for the construction of marine solar photovoltaic system to provide design ideas.
Źródło:
Polish Maritime Research; 2018, S 2; 176-181
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electric energy access in Bangladesh
Autorzy:
Taheruzzaman, M.
Janik, P.
Powiązania:
https://bibliotekanauki.pl/articles/136227.pdf
Data publikacji:
2016
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
energy profile
energy efficiency
electric power sector
renewable energy
solar system
Opis:
This paper represents the overall electrical energy profile and access in Bangladesh. In the recent past, Bangladesh has been experiencing the shortage of electricity, and about 42% of the population no access to the electricity. The electricity consumption has rapidly increased over last decade. The demand and consumption will intensify in the remote future as overall development and future growth. To set “vision 2021” of Bangladesh; the government of Bangladesh has devoted to ensuring access to affordable and reliable electricity for all by 2021. In the modern time, energy is the vital ingredient for socioeconomic growth in the developing country i.e., alleviating poverty. Along with electricity access in Bangladesh strived to become the middle-income country by 2021. Bangladesh has experienced that energy consumption inclines to increase rapidly when per capita income reaches between US$ 1,000 and US$ 10,000, and a country’s growth momentum through reliable energy supply and consistent energy supply ensured by the sustainable energy. As increasing population in Bangladesh, the electric energy generation is an important dispute through the sustainable way.
Źródło:
Transactions on Environment and Electrical Engineering; 2016, 1, 2; 6-17
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
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
Tytuł:
Ocena efektów ekonomicznych i ekologicznych wykorzystania energii słonecznej na przykładzie domu jednorodzinnego
Evaluation of Economic and Ecological Effects of Solar Energy on the Example of a Single-family House
Autorzy:
Ostrowska, A.
Sobczyk, W.
Pawul, M.
Powiązania:
https://bibliotekanauki.pl/articles/1819109.pdf
Data publikacji:
2013
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
efekty ekonomiczne
efekty ekologiczne
energia słoneczna
management
solar system
single-family house
Opis:
The purpose of this article is to demonstrate the profitability of energy production from alternative energy source, which is the Sun. The article compares the installation of active solar system with installation that uses the traditional source of energy. The study contains a summary of the two energy installations operating in a single family home with a fixed surface area and number of inhabitants. We compared the costs of installation, operating costs, payback period, environmental impact for these two installations. Performed calculations showed the differences in the investment costs and the operating costs of traditional and solar installations for hot water heating. For installation of solar panels, the investor bears almost twice the financial outlay.It should be noted, however, that the payback period is more than 11 years, while the lifetime of the device is up to 20 years. When you buy an installation that uses alternative energy sources, you can apply for grants, which reduce investment costs, or take advantage of the credit specifically designed for such investments. Ecological effects, although unmeasurable, are significant and definitely testify in favor of the solar system.
Źródło:
Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 3; 2697-2710
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conversion Energy from the Movement of the Solar System Through Universal Pressure: Reflections in Seismic Events and Global Temperatures
Autorzy:
Persinger, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/411550.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
solar system
seismicity
geomagnetic activity
Global Warming
night glow
electron mass equivalence
Opis:
The velocity (~242 km•s-1) of the Solar System around the galactic center within the universal pressure (~10-10 Pascal) produces energies within the earth’s volume that is equivalent to that released by the sum of all earthquakes per unit time. The available energy within the earth and solar volume from the expected spatial variations of this pressure along this perimeter, which requires about 250 million years to traverse, can accommodate the increased geomagnetic activity from the expanding solar corona over the last approximately 100 years as well as the increase in global warming. Inferences of a varying structure of space that may explain the periodicity and range in solar cycles as well as anomalous minimums (such as the Maunder phenomenon) suggest a central galactic singularity with spatial ripples exhibiting peak-to-peak troughs that approximate the earth’s circumference and frequencies in the order of 7 to 8 Hz. The precise velocity-universal pressure flux density may also explain the millilux-range magnitude of the earth’s night (air) glow. These results and the application of these concepts indicate that origins of seismicity, slow drifts in the intensity of geomagnetic activity, and global warming (and cooling) trends are products of differential interactions with quantitative fluctuations in sub-matter space and that the subtle variations encountered as the Solar System moves along this 1021 m perimeter may be more significant than previously assumed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 1; 78-86
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solar Hot Water Heating and Electricity Generation Using PV/T Hybrid System
Autorzy:
Badran, Ali A.
Obeidat, Firas A.
Powiązania:
https://bibliotekanauki.pl/articles/2086426.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
solar energy system
water heating system
PV module
flat plate solar collector
Opis:
Experimental work has been carried out to study the possibility of combining a conventional solar water collector with a hybrid device, developed previously and known as PV/T system, in order to obtain hot water with temperature above 40 °C. The effect of the combination on the productivity of hot water and the produced electricity was found. The formerly developed device, in which there was a multi-purpose solar collector, can produce hot water and electricity. It was connected to the conventional fin-tube collector in series in order to raise the product temperature to a higher level. This development was achieved for the first time as a combination between a PV/T and a conventional fin-tube collector. Instrumentation to measure temperatures, solar radiation, wind speed and flow rate was installed on the system. It was found that the water temperature was raised from 29 °C to 32 °C in the PV/T collector system and, after flowing through the conventional collector, it was raised to 50 °C and above. It was also found that the power efficiency in the case of water flow is always higher than in the case of no water flow.
Źródło:
Journal of Ecological Engineering; 2022, 23, 5; 196--206
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real-time validation of an automatic generation control system considering HPA-ISE with crow search algorithm optimized cascade FOPDN-FOPIDN controller
Autorzy:
Babu, Naladi Ram
Chiranjeevi, Tirumalasetty
Devarapalli, Ramesh
Knypiński, Łukasz
Garcìa Màrquez, Fausto Pedro
Powiązania:
https://bibliotekanauki.pl/articles/27312009.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
crow search algorithm
dish-stirling solar system
AGC
RT Lab
FOPDN-FOPIDN controller
Opis:
This article validates the application of RT-Lab for the AGC studies of three-area systems. All the areas are employed with thermal-DSTS systems. A new controller named cascade FOPDN-FOPPIDN is employed. Its parameters are optimized using a CSA, subjecting to a new PI named HPA-ISE. The responses of the FOPDN-FOPIDN controller are related and are superior over PIDN and TIDN controllers. Moreover, the dominance of HPA-ISE is verified with ISE, and it performs better in terms of system dynamics. Further, the system performance reliability is analyzed with the AC-HVDC and is better than the AC system. Besides, sensitivity analysis recommends that the proposed FOPDN-FOPIDN at diverse conditions is robust and more reliability.
Źródło:
Archives of Control Sciences; 2023, 33, 2; 371--390
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 103

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