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Wyszukujesz frazę "air conditioning" wg kryterium: Wszystkie pola


Wyświetlanie 1-5 z 5
Tytuł:
Air conditioning systems in data center
Autorzy:
Grzebielec, Andrzej
Kłos, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/132006.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
air conditioning
datacenter
energy efficiency
Opis:
Data center cooling is a specific issue. High heat flux density and maintaining rigorous operating conditions require suitable cold from the cooling system. The article lists the most common methods of data center cooling and classification of technological systems in data center facilities.
Źródło:
Modern Engineering; 2020, 1; 26-37
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of a sorption cold storage supporting the air conditioning system
Autorzy:
Grzebielec, Andrzej
Szelągowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/132075.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
adsorption
energy efficiency
cold storage
Opis:
Techniques related to elimination of environmental pollution are divided into two main trends. These are primary and secondary solutions. Primary solutions are based on the creation / selection of technologies that do not emit pollutants, secondary solutions are used in the situation that pollutants are already generated. Elimination is made by selected technological processes. When using residential, office or industrial buildings, emissions are primarily associated with the use of energy carriers such as electricity, heat or cold. During electricity production, pollution is related mostly to the atmosphere degradation. Thus, any solution that reduces energy consumption or improves the energy efficiency of buildings is the primary method of environment protection. This article proposes and investigates an idea of cold storage system based on an adsorbent bed (silica gel), which aims to reduce the energy consumption of the domestic air conditioning system. As a result of experimental research, it was shown that for a building with a volume of 1000m 3 and multiples of air exchanges at 0.5 level, a silica gel bed with a volume of 1.63 m3 is required in order to continuously unload the air conditioning system for 8 hours (while outside air temperature exceeding 25oC).
Źródło:
Modern Engineering; 2019, 1; 10-15
2450-5501
Pojawia się w:
Modern 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:
Safety aspects for the R290 (propane) as working medium in small air conditioning installations
Autorzy:
Grzebielec, Andrzej
Rusowicz, Artur
Szelągowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1537219.pdf
Data publikacji:
2021
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
refrigeration
refrigerant
propane
R290
chłodzenie
chłodziwo
propan
Opis:
Following the entry into force of the Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16 April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006, the scope of refrigerants, which have so far been commonly used is very limited. All preferred refrigerants are mostly flammable and explosive, and they include R32, R1234yf, R1234ze, R290 (propane), R600a (isobutane), R717 (ammonia). However, it should be noted that refrigerants such as R32, R1234yf, R1234ze are classified as mildly flammable and has been created for them, in accordance with ISO 817 standard, special group called A2L. It is also worth noting that the new classification moved ammonia to the group B2L - that means is toxic and mildly flammable. The article focuses on defining the conditions in which there is possible to build safely split installation in which the propane is a refrigerant. It turns out that small splits are devices which can be used safely with R290 in most cases.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2021, 2; 22-29
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energochłonność systemów wytwarzania chłodu w obiektach hotelowych
Energy consumption of the cool generation systems in the hotel facilities
Autorzy:
Ruciński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/111025.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
klimatyzacja
hotel
bilans cieplny
air-conditioning
heat balance
Opis:
W pracy przedstawiono ogólną charakterystykę zużycia energii w branży hotelowej na świecie i w Europie. Podano projektowe i rzeczywiste wielkości zużycia energii służące do pokrycia zapotrzebowania na chłód w wybranych hotelach. Wskazano technologie i procedury postępowania potrzebne do obniżenia wykorzystywania energii ze źródeł nieodnawialnych. Następnie przedstawiono rozważane obecnie perspektywiczne technologie chłodnicze do zastosowania w następnych 10 – 20 latach. W pracy podkreślono potrzebę ograniczenia energochłonności instalacji chłodniczych i klimatyzacyjnych ze względu na ochronę środowiska i czystość atmosfery. Bezpośrednio determinuje to dalszy rozwój branży hotelarskiej w postaci nowoczesnych i nowatorskich rozwiązań.
The paper presents the general characteristics of energy consumption in the hotel industry all over the world and in Europe. The design and actual energy consumption needed for cold production in selected hotels is presented. Technologies and procedures necessary to reduce the use of fossil fuels are indicated. Then, the future cooling technologies currently under consideration are presented for use in the next 10 -20 years. The work underlined the need to reduce the energy consumption of refrigeration and air-conditioning installations due to environmental protection and the purity of the atmosphere. This directly determines the further development of the hotel industry in the form of modern and innovative solutions.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2019, 3
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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