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Wyświetlanie 1-4 z 4
Tytuł:
The use of passive shield to reduce the gains of irradiation
Zastosowanie osłony pasywnej do redukcji zysków od napromieniowania
Autorzy:
Kaleta, I.
Liwocha, A.
Tyburczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/402004.pdf
Data publikacji:
2015
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
building envelope
passive shield
irradiation
heat gains
przegrody
osłona pasywna
napromieniowanie
zyski ciepła
Opis:
The paper presents the efficiency analysis of the passive shield which is opaque lightweight steel shell made of perforated panels arranged on the outer side of the building. The simplified calculation methodology is given. It is shown that the use of the shield lowers the outer temperature of the wall by several degrees which results in limiting heat gains in the summer, correspondingly.
Źródło:
Structure and Environment; 2015, 7, 3; 142-147
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energetic & exergetic analysis of a parabolic trough: concentrated solar power plant
Autorzy:
Nagpal, Mohit
Maithani, Rajesh
Kumar, Suresh
Powiązania:
https://bibliotekanauki.pl/articles/2142893.pdf
Data publikacji:
2021
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
solar energy
exergy
thermal efficiency
heat gain
heat losses
parabolic trough
collectors
energia słoneczna
egzergia
wydajność termiczna
zyski ciepła
straty ciepła
kolektory
Opis:
Solar energy is the most affordable source of energy. Parabolic trough systems are used to concentrate and extract heat, therefore it’s very significant to analyse its performance in terms of energy and exergy. Exergy based analysis of the system ensures the eradication of losses, resulting in the yield of energy of the highest quality. In this paper, an investigation has been carried out using numerical simulation with an objective of analysis of Parabolic Trough Collectors on the basis of energy and exergy. Detailed second law analysis has been performed by varying the system and operating parameters through computer simulation. Exergy output has been determined by analysing the effect of major system parameters, namely, mirror reflectivity, glass transmissivity, absorptivity, the diameter of glass envelop, and the receiver. The operating parameters considered in the investigation are insolation and temperature rise parameters. The extensive investigation of the parabolic trough of a concentrated solar power plant for various design parameters in the range of operating parameters reveals that it is beneficial to operate the system at higher temperature as opposed to the preference of the operating system at lower temperature from purely thermal considerations.
Źródło:
Acta Innovations; 2021, 40; 19-30
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internal heat loads in LUNARES analogue planetary base - a case study
Autorzy:
Kaczmarzyk, Marcin
Waśniowski, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/104701.pdf
Data publikacji:
2019
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
space building physics
internal heat gains
analogue space station
metabolic heat generation
analogowa stacja kosmiczna
metaboliczne wytwarzanie ciepła
wewnętrzne zyski ciepła
Opis:
This case study work focuses on recognising and quantifying internal heat sources in the first European analogue planetary base: the recently constructed Polish LUNARES habitat. The paper explains the necessity of conducting analogue space missions prior to an actual manned exploration of the Moon and Mars. Notions of internal heat loads and gains have been elaborated along with their significance for developing space building physics. This paper presents the results of thorough inspection of all internal heat sources, conducted by one of the authors during ICAres-1 Mars analogue mission aboard the LUNARES base. Three main sources of internal heat loads were identified and carefully studied; the habitat’s electrical equipment, the crew body heat and their personal appliances. These heat loads were calculated and total internal heat load of the base was established and discussed. The results of this study may serve as a baseline for predicting internal heat loads aboard actual planetary bases.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2019, 66, 3; 25-36
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of the urban services electronic payment systems on the example of silesian card of public services
Autorzy:
Dydkowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/393631.pdf
Data publikacji:
2014
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
economic effectiveness
electronic payment system
urban service
external costs
profits
urban transport
efektywność ekonomiczna
elektroniczny system płatności
usługi miejskie
koszty zewnętrzne
zyski
transport miejski
Opis:
Electronic payment systems used for urban services are implemented and funded by the public sector. Those are rather big investments, characterized by high costs, but they also allow for gaining profits – mainly connected with the transport offer optimization and with more effective price management. When preparing the documents, among other papers concerning functionality or technical and technological solutions, it is necessary to prepare a feasibility study, in which the assessment of the effectiveness of such investments is an important part. To do so, one ought to identify and assess the costs and the profits connected with the realization of such projects. Such assessment ought to be performed within the frame of financial analyses (from the perspective of the unit implementing and using the solutions) and of economic analyses within which the external costs and profits should also be considered.
Źródło:
Archives of Transport System Telematics; 2014, 7, 4; 3-8
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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