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    Wyświetlanie 1-11 z 11
    Tytuł:
    Weather patterns of the coastal zone of Petuniabukta, central Spitsbergen in the period 2008–2010
    Autorzy:
    Láska, Kamil
    Witoszová, Denisa
    Prošek, Pavel
    Powiązania:
    https://bibliotekanauki.pl/articles/2051435.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Svalbard
    climate
    temperature
    solar radiation
    Źródło:
    Polish Polar Research; 2012, 4; 297-318
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of the effect of insect net used in greenhouse on indoor conditions: pepper plant sample
    Autorzy:
    Ocak, Aytekin
    Atılgan, Atılgan
    Powiązania:
    https://bibliotekanauki.pl/articles/101436.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    insect net
    solar radiation
    temperature
    greenhouse
    Opis:
    The aim of this study is to determine the effects of insect net placed on ventilation openings in greenhouses on temperature, humidity and radiation energy from indoor conditions. In addition, the effects of insect net on the agents used in biological control have been tried to be determined. The study was carried out between November 2017 and May 2018 in Kumluca district of Antalya in 2 glass and 2 plastic greenhouses. Greenhouses; the glass greenhouse without insect net (GCG), the glass greenhouse with insect net (GNG), the plastic greenhouse without insect net (PCG), the plastic greenhouse with insect net (PNG) is named as. Temperature, humidity and solar radiation values were measured in greenhouses. According to the results of the research; It was determined that the recommended temperature values for pepper development are only suitable in January and well below the recommended values in February. In other production months, the average temperature values of with insect net greenhouses (PNG-GNG) used in ventilation openings were found to be higher than without insect net greenhouses (PCG-GCG). When the results of relative humidity values were examined, it was observed that the use of insect tulle in the greenhouses was lower than the control greenhouses. It was determined that the solar radiation values were lower than the control greenhouses (PCG-GCG) of the insect tulle greenhouses (PNGGNG) in other months except January and May. Therefore, we can say that the use of insect net reduces the amount of solar radiation. Accord ing to the results of temperature values; the growth of Orius Leavigatus and Amblyseius swirski, one of the biological agents and resistant to high temperatures, was observed to slow down in all other months except February. For Phytoseiulus persimilis (30°C and above), we can say that this is a suitable environment and that the eggs have emerged in a shorter time. The most suitable average temperature for the development of Aphidius colemani was reached only in January. In other months, the development of this agent slows down, parasitic insecticides can be said to decrease the rate of parasitoids. As a result; It was determined that the temperature values were higher in the greenhouses where insect net was used and the solar radiation values were lower than the control greenhouses. However, since the use of insect net causes the temperature in the greenhouse to increase, it may create a positive development for some bio agents. It is thought that producers using insect net should make production considering these negativities in temperature and solar radiation.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2019, III/1; 197-217
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ promieniowania słonecznego na temperaturę wewnątrz przegrody trójwarstwowej w okresie zimowym
    Influence of solar radiation to the temperature inside a three-layer partition in winter season
    Autorzy:
    Antonik-Popiołek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084044.pdf
    Data publikacji:
    2021
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    outside wall
    solar radiation
    temperature
    smart building
    Opis:
    The article presents an analysis of the impact of solar radiation on the temperature changes in the external three-layer partition of a smart building. Data for analysis were taken from temperature sensors located in individual layers of the wall and from a weather station on the roof of a building. The data were recorded 24 h in 5- and 15-minute intervals. The analysis period was one month in a winter season. The purpose of the analysis was to determine the correlation between the solar radiation measured as the illuminance and the temperature inside the wall. In the analysed period of one month the correlation was very weak. Also, considering only the illuminance over 10,000 lx, the correlation was noticeable, but still very weak. The use of innovative fiber optic technology with fibre Bragg grating was proposed to avoid incorrect measurements.
    Źródło:
    Acta Scientiarum Polonorum. Architectura; 2021, 20, 2; 75-82
    1644-0633
    Pojawia się w:
    Acta Scientiarum Polonorum. Architectura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warming and cooling of the Earths climate and their causes
    Autorzy:
    Boryczka, Jerzy
    Szmajda, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/2032466.pdf
    Data publikacji:
    2006-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    solar radiation
    temperature
    greenhouse effect
    spectrum
    solar activity
    mass moments of planets
    Opis:
    The progressing wanning of the Earth's climate is mainly caused by natural factors, that is, the increasing solar activity and the decreasing volcanic activity on the Earth. The aspects which testify to the predominance o f natural factors include: synchronous changes in the average air temperature in the Northern Hemisphere in the years 1856-2002, the average consecutive 11-year Wolf numbers and the location of the mass centres o f the four largest planets. Natural causes o f the climate warming are corroborated by the synchronicity o f changes in the carbon dioxide concentration and paleotemperature in the last 450,000 years, revealed on the basis o f an analysis o f the ice core in Antarctica. Periods o f climate warming occur every 100,000 years and are caused by an increased solar radiation in high latitudes, resulting from changes in the Earth's orbit and the inclination of the Earth axis (according to the popular Milanković theory).
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2006, 12; 31-41
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Climate of the Europe. Past, present, future
    Autorzy:
    Boryczka, Jerzy
    Stopa-Boryczka, Maria
    Mikulska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/2029392.pdf
    Data publikacji:
    2004-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    Solar radiation
    temperature
    greenhouse effect
    spectre
    volcanic platforms
    Solar activity
    planet mass momentum
    forecast
    Opis:
    The advancing warming of Earth climate has largely been influenced by natural causes, i.e. increased Solar activity and decreasing volcanic activity on Earth. It still remains unknown which part of the warming process results from the increased amount of Solar energy reaching Earth surface, and which is being caused by the anthropogenic part of atmosphere's greenhouse effect. The facts speaking in favour of natural factors include synchronic changes of mean air temperature on the Northern hemisphere between 1856 - 2002, mean consecutive 11-year Wolf numbers, and the location of mass centres of the four biggest planets in our Solar system. The theory of natural causes of climate warming is also backed by synchronic changes in carbon dioxide concentration and paleotemperature within the last 160,000 years and 450,000 years, recreated based Antarctica ice cores. Warmings occur every 100,000 years. They are triggered by increased Solar radiation in large geographic latitudes resulting from changes in Earth orbit and Earth axis slant (according to the already accepted Milankovic theory). “Parallelism” of changes in CO2 concentration and paleotemperture shows that the atmospheric content of carbon dioxide is shaped by the amount of Solar radiation reaching Earth - through shifts in ocean waters temperature. It is more credible to claim that “CO2 concentration in atmosphere rises along with the amount of Solar radiation reaching Earth surface (i.e. when it is warmer).”
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2004, 11; 101-118
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Different Between the Temperature of the Solar Burst at the Feed Point of the Log Periodic Dipole Antenna (LPDA) and the CALLISTO Spectrometer
    Autorzy:
    Hamidi, Z. S.
    Shariff, N. N. M.
    Monstein, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/411932.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CALLISTO
    Log Periodic Dipole Antenna
    LPDA
    temperature
    solar radio burst
    Opis:
    The article attempts to analyze and compare the temperature of solar radio burst at the (i) feed point and antenna and (ii) at the receiver (CALLISTO spectrometer). The analysis is very important to evaluate the performance for a better observation of solar radio burst. We start our project by developing this antenna with 19 elements of different sizes covers from 45 − 870 MHz. We choose the National Space Agency (PAN), Sg. Lang, Banting, Selangor, Malaysia as our site seems this site has a very minimum of Radio Frequency Interference (RFI). The antenna, then connects to the low noise amplifier and the CALLISTO spectrometer as one complete system. Based on the results, it was found that the temperature of the at the feed point of the antenna and receiver is different up to 3.25 K. The average level burst level above background sky is about 0.41dB. It was found that the power of solar burst at the feed point of the antenna is equivalent to 2.6 x 10-18 W, but decreases to 2.3 x 10-18 W when detected by the CALLISTO spectrometer. These results show a better understanding of how does the system operate in terms of the process of analysis of the temperature of solar radio burst.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 167-176
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System of heat supply ’ad hoc’ with solar wall
    Autorzy:
    Shapoval, S.
    Zhelykh, V.
    Kapalo, P.
    Venhryn, I.
    Dacko, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/104281.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    solar wall
    temperature
    specific heat capacity
    coefficient of performance system
    Opis:
    For the implementation of solar thermal installations it is necessary to optimize energy-efficient external enclosures due to the correct installation and design of these units at different orientations of external walls. Investigated the effectiveness of using solar energy in the conditions of shortage of energy in Ukraine. Ad hoc solar wall look at two modes of its operation. Given a variety of graphical, analytical expressions for understanding the operation of the proposed design. Given these changes of the heat carrier temperature solar wall income the amount of the specific instantaneous heat output through time. The article considers the possibility of using experimental models, solar wall under the influence of her unfavourable ad hoc factors. It is established that the proposed model is solar wall is quite effective and can be used in solar heating systems.
    Źródło:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 4; 49-56
    2300-5130
    2300-8903
    Pojawia się w:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of tunnel cover type on growth and yield of sweet pepper
    Autorzy:
    Siwek, P.
    Libik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24263.pdf
    Data publikacji:
    1999
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    temperature
    pepper
    sweet pepper
    yield
    growth
    fruit quality
    solar radiation
    microclimate
    Źródło:
    International Agrophysics; 1999, 13, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exergy analysis of double-circuit flat solar collector with thermosyphon circulation
    Analiza egzergetyczna kolektora słonecznego dwuobwodowego z obiegiem termosyfonu
    Autorzy:
    Wójcik, Waldemar
    Kalimoldayev, Maksat
    Amirgaliyev, Yedilkhan
    Kunelbayev, Murat
    Kalizhanova, Aliya
    Kozbakova, Ainur
    Merembayev, Timur
    Powiązania:
    https://bibliotekanauki.pl/articles/408460.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    temperature
    solar energy
    analysis
    mathematical model
    temperatura
    energia słoneczna
    analiza
    model matematyczny
    Opis:
    In the present work, an exergy analysis was done of two-circuit flat solar collector with thermosiphon circulation. The article presents a mathematical model of energy and exergic analysis of flat solar collectors, as well as calculations of solar radiation efficiency, temperature, flow rate of the fluid, exergy rates and exergy loss rates are done. The significance of the results achieved is high, since experimental studies can detect inefficient components of the solar heating system. The exergetic efficiency of a dual-circuit flat solar collector with a thermosiphon circulation describes irreversibility of the process according to thermodynamic parameters. This is caused by a large the degree of overheating achieved at the end of the processes of compression and evaporation, which leads to large differences in heat exchange temperature based on the heat pump cycle. The exergy efficiency value for the entire system is 70. Maximum values energy efficiency and exergy at noon, 32.5% and 2.23%, respectively. The efficiency of exergy is 4%, and the highest the loss of exergy is the difference between the absorber plates and the sun, accounting for 52.86% of the total exergy rate.
    W niniejszej pracy wykonano analizę egzergetyczną płaskiego kolektora słonecznego dwuobwodowego z cyrkulacją termosyfonową. W artykule przedstawiono model matematyczny analizy energetycznej i egzergetycznej płaskich kolektorów słonecznych, a także obliczono sprawność promieniowania słonecznego, temperaturę, natężenie przepływu cieczy, wskaźniki egzergii i wskaźniki strat egzergetycznych. Znaczenie osiągniętych wyników jest duże, ponieważ badania eksperymentalne mogą wykryć nieefektywne elementy systemu ogrzewania energią słoneczną. Egzergetyczna sprawność dwuobwodowego płaskiego kolektora słonecznego z obiegiem termosyfonowym opisuje nieodwracalność procesu według parametrów termodynamicznych. Jest to spowodowane dużym stopniem przegrzania osiąganym pod koniec procesów sprężania i odparowywania, co prowadzi do dużych różnic w wymianie ciepła w oparciu o cykl pompy ciepła. Efektywność energetyczna całego systemu wynosi 70. Maksymalne wartości sprawności energetycznej i egzergii w południe, odpowiednio 32,5% i 2,23%. Efektywność egzergii wynosi 4%, a największą stratą egzergii jest różnica pomiędzy płytami absorbera a słońcem, stanowiąca 52,86% całkowitego wskaźnika egzergii.
    Źródło:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2019, 9, 3; 35-39
    2083-0157
    2391-6761
    Pojawia się w:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of a heat pump and solar energy in the heat demand
    Autorzy:
    Noch, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/104452.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    heat pump
    solar energy
    Coefficient of Performance
    energy performance
    heat losses and gains
    heat power
    heat source
    heating
    heating appliances
    temperature
    investment costs
    heat demand
    Opis:
    The article presents the energy performance of a heat pump. The coefficient of performance was taken into account, which is the ratio of the heating energy obtained to the supplied electrical energy necessary for the compressor operation. The focus was on the issue of operating costs of using heat pumps. These costs are mainly influenced by two factors. Firstly, energy performance and the purchase price of electricity. The second factor is investment costs. Heat gains from solar energy were characterized. The value of the solar radiation transmission coefficient for the double glazing was assumed (TR = 0.7). Solar gains were shown in January for windows on the eastern and western facades. The analysis covered the seasonal heat demand for heating. The studies and calculations took into account the occurring heat losses and heat gains from the sun and internal sources with their utilization rate. Particular attention was paid to the fact that the peak power of heating appliances can be calculated by knowing the value of the annual energy demand for heating a building that takes into account the most severe external conditions prevailing in a given climate zone, i.e. the minimum outside temperature.
    Źródło:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 99-108
    2300-5130
    2300-8903
    Pojawia się w:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability in the distribution of phytoplankton as affected by changes to the main physical parameters in the Baltic Sea
    Autorzy:
    Dzierzbicka-Glowacka, L.
    Jakacki, J.
    Janecki, M.
    Nowicki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/49183.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    3D ecosystem model
    Baltic Sea
    distribution
    ecological system
    ecosystem
    long-term variability
    marine ecosystem
    nutrient
    organic matter
    physical parameter
    phytoplankton
    solar radiation
    temperature
    thermal radiation
    variability
    wind speed
    Opis:
    An integrated ecological system model was used to determine the influence on Baltic phytoplankton of the long-term variability in the sea’s main physical parameters. A three-dimensional coupled sea-ice model was developed. A simple ecosystem was added to the sea-ice model and used to estimate phytoplankton variability during long-term changes in the main atmospheric forces. Scenarios similar to those of climate were performed by altering the main physical parameters such as temperature, wind speed, solar and thermal radiation (in different configurations). The influence of the variability in these parameters on phytoplankton is discussed.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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