Temat: powietrzny kolektor słoneczny - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Pomiar mocy cieplnej pasywnego, powietrznego kolektora słonecznego
Measurement of thermal power of passive solar air collector
Autorzy:: Dutkowski, K
Piątkowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/151292.pdf
Data publikacji:: 2014
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: powietrzny kolektor słoneczny
badania eksperymentalne
moc cieplna kolektora pasywnego
solar air collector
experimental investigations
heat efficiency
Opis:: W artykule przedstawiono wyniki badań eksperymentalnych prototypowego, powietrznego kolektora słonecznego. Badania przeprowadzono w warunkach laboratoryjnych. Ich celem było wyznaczenie wpływu natężenia promieniowania na przyrost temperatury powietrza oraz prędkość przepływu powietrza (na skutek ruchów konwekcyjnych). W efekcie pomiarów wyznaczono natężenie przepływu powietrza oraz moc cieplną kolektora. Pionierskie rozwiązanie konstrukcyjne jak i wyniki badań będą stanowiły punkt odniesienia dla wyników badań innych konstrukcji.
The results of experimental investigations of the prototype flat air solar collector are presented in this paper. The collector consists of an aluminum casing with dimensions 1.04 m (width) x 2.08 m (height) x 0.18 m (thickness). The air inlet to the collector has an inlet channel with diameter, din, of 110 mm and a length of 0.5 m. The air outlet channel has an internal diameter, dout, 130 mm and a length of 0.5 m. The prototype solar air collector has a cover made of a cellular polycarbonate with a thickness of 5 mm and in brown color. The study was performed on a laboratory set-up. The collector worked under conditions of natural convection. The tests were performed for a range of irradiance I = 0 - 325 W/m2. The absorber surface temperature variations, air temperature increase and the collector thermal power were determined. It was found that at maximum irradiation, the air velocity was w = 1 m/s, volume flow rate of air = 28 m3/h, and the corresponding heat transfer rate was Q = 270 W.
Źródło:: Pomiary Automatyka Kontrola; 2014, R. 60, nr 10, 10; 868-871
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Second law optimization and parametric study of a solar air heater having artificially roughened absorber plate
Autorzy:: Sahu, Mukesh Kumar
Prasad, Radha Krishna
Powiązania:: https://bibliotekanauki.pl/articles/240023.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: artificial roughness
entropy generation
entropy generation minimization
augmentation entropy generation number
solar air heater
źródło entropii
minimalizacja
powietrzny kolektor słoneczny
Opis:: In present article a mathematical model of arc shape wire roughened solar air heater, on the basis of energy and exergy output rates, entropy generation rate and augmentation entropy generation number, has been developed. A parametric study leading to entropy generation minimization has also been performed. In the analysis the geometric and operating parameters which have been considered as variable are: inlet air temperature, duct depth, collector width to duct depth ratio, mass flow rate per unit collector area, and temperature rise parameter. Results have been presented to see the effects of these values on the energy and exergy output rates of the roughened solar air heater. Effect of different values of wire rib roughness parameters on entropy generation has also been presented. Finally, design curves and optimization for different rib roughness parameters on the basis of minimum entropy generation number with temperature rise parameter, have been presented and optimum values also have been found out 0.004 to 0.010 (Km2 )/W. The entropy generation rate obtained for the system, in the present work has been compared with those obtained for solar air heater with different roughness geometries on absorber plates available in the literature for common roughness parameters and operating parameters which validate the present results.
Źródło:: Archives of Thermodynamics; 2019, 40, 2; 107-135
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of the influence of the heat-absorbing surface of an air-cooled solar collector on its thermal and mechanical properties
Autorzy:: Zhelykh, Vasyl
Ulewicz, Małgorzata
Kozak, Krystyna
Savchenko, Olena
Kasynets, Mariana
Powiązania:: https://bibliotekanauki.pl/articles/88616.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: solar air collector
heat-absorbing plate
flow turbulators
thermal power
air channel
powietrzny kolektor słoneczny
płyta pochłaniająca ciepło
turbulatory przepływowe
energetyka cieplna
kanał powietrzny
Opis:: This paper presents the analysis of existing forms of heat absorbing surfaces of air solar collectors, which gained the greatest popularity in the world. The obtained data allowed to conclude that there is a need for the development of solar collectors with air as a coolant with an improved form of heat absorber, which will reduce the operational and capital costs of solar systems and allow the efficient use of such structures in a moderate climate without additional mechanisms for the transfer of coolant. The use of computer simulation helped to compare the thermal characteristics of air-borne solar collectors of a different design. The substantiation of the expediency of installing as a heat absorber of flow turbulators in the form of a screw has been fulfilled, as well as the height of the air channel of the solar collector has been determined, in which the maximum heating of the transfer medium is observed. In addition, the loss of pressure in the air channel of the solar collector with flow turbulators was determined and the comparison of the obtained data with the values of pressure losses in the air collector of the matrix type and the air collector with V-shaped ribs was made.
Źródło:: System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 481-489
2657-5450
Pojawia się w:: System Safety : Human - Technical Facility - Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

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

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