Temat: domestic hot water system - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Efficiency of solar energy use in domestic hot water systems in Poland
Autorzy:: Savсhenko, Olena
Lis, Anna
Powiązania:: https://bibliotekanauki.pl/articles/2174975.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Częstochowska
Tematy:: energia słoneczna
system ciepłej wody użytkowej
kolektor słoneczny
frakcja słoneczna
sprawność
solar energy
domestic hot water system
solar collector
solar fraction
efficiency
Opis:: This article establishes the efficiency of a single-circuit thermosyphon domestic solar hot water system for Polish cities such as Warsaw, Lublin, Bialystok, Czestochowa and Szczecin, using two indicators, namely the solar fraction and the efficiency of solar collector. It was found that of the selected cities, Bialystok is the most attractive in terms of using solar energy for hot water supply systems, as the solar hot water supply system has the highest solar fraction f = 0.64, and the efficiency of the solar collector is ƞ = 0.553. The lowest efficiency of the solar hot water supply system is observed for the city of Szczecin, which is characterized by indicators f = 0.49 and ƞ = 0.505, respectively. These analytical studies show that the use of the solar hot water system in selected cities in Poland can save on traditional energy sources for hot water systems by up to 50%.
Źródło:: Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2021, 10, 2; 45--52
2299-8535
2544-963X
Pojawia się w:: Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of water-water type heat pump operation in a building object
Analiza pracy pompy ciepła typu woda-woda w obiekcie budowlanym
Autorzy:: Knaga, J.
Szul, T.
Powiązania:: https://bibliotekanauki.pl/articles/793704.pdf
Data publikacji:: 2011
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: heating system
heat pump
central heating
hot domestic water
scroll type compressor
heat transfer coefficient
building
statistical analysis
Opis:: The paper presents operation examination results of a heating system equipped with a heat pump, manufactured by the Sekut company, equipped with a scroll type compressor. The performed statistical analysis has shown a significant influence of external temperature and heat transfer coefficient to the COP value. Within the analysed period, the COP maintained a level of 2.6 at an average monthly temperature of -6°C, with a transfer coefficient of 15%.
W opracowaniu przedstawiono wyniki badań eksploatacyjnych systemy grzewczego wyposażonego w pompę ciepła wyprodukowaną przez firmę Sekut ze sprężarką typu scrol. Przeprowadzona analiza statystyczna wykazała istotny wpływ temperatury zewnętrznej, oraz wskaźnika przekazania ciepła na wartość COP. W analizowanym okresie COP kształtowało się na poziomie 2.6 przy średniej miesięcznej temperaturze –6OC i wskaźniku przekazania 15%.
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Ocena efektu ekologicznego wynikającego z zastosowania kolektorów słonecznych
Assessment of the Environmental Effects Resulting from the Use of Solar Collectors
Autorzy:: Żukowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1818047.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:: kolektory słoneczne
podgrzewanie wody użytkowej
odnawialne źródła energii
zanieczyszczenia powietrza
pakiet klimatyczno-energetyczny
systemy solarne
solar collectors
solar domestic
hot water system
renewable energy sources
air pollutants
climate and energy package
Opis:: Climate and energy package is a set of rules designed by member states of European Union to combat climate change. According to these directives the greenhouse gas emissions should be reduced by 20% and the share of energy produced from renewable sources should simultaneously be increased by the same percentage. The use of solar collectors can both improve energy security and reduce the environmental impact caused by the thermal energy industry. An ability to reduce the pollutants, which can be achieved using devices for converting solar radiation into the heat, was determined in this paper. The environmental effect, discussed in the present work, is caused by reducing the demand for domestic water heating. This effect results from the application of thermal solar collectors. The amount of pollutants that are released into the air, emitted from combustion of fuels, was estimated on the basis of the annual energy gain from the solar radiation and emission factors of the selected pollutants recommended by the European Environment Agency (EEA). Net gain of energy from solar panels was determined on the basis of experimental data. The object of the study was the solar domestic hot water (SDHW) system located on the roof of the Hotel for the staff of Bialystok University of Technology (Poland). Experimental studies were carried out under the project financed by the Regional Operational Program of Podlasie Province – stage 1.1 named “Study of the effectiveness of active and passive methods to improve the energy efficiency of infrastructure supported by renewable energy sources”. The construction of the research object was the target of the stage – 5.2 named “Improving the energy efficiency of Bialystok University of Technology infrastructure by use of renewable energy sources” (V. Development of environmental protection infrastructure”). The system consists of two parallel-connected installations. The first includes 21 tube collectors with a total gross area of more than 74 m2. The second unit consists of 35 flat plate collectors with a total gross area of about 72 m2. Eight storage tanks with the capacity of 1000 liters each were placed in the basement of the Hotel. The monitoring system was used to record the installation parameters during its operation. It consists of 17 heat meters, 4 electricity recorders, and 42 platinum resistance temperature sensors. The weather station that captures the basic parameters of outside air and insolation is located near the solar collectors. As a result of studies, it was found that the solar system produced 230.61 GJ heat energy throughout the year. The equation necessary to determine an equivalent amount of energy that is produced in a power plant was presented in this paper. Subsequently, the value of a possible reduction of selected pollutant emissions, which are released into the air, was calculated. Moreover, ΔPj coefficients were proposed for determination of the emissions reduction related to 1 m2 gross area of a solar panel. The main conclusions from the assessment of the impact of applying SDHW system to reduce the air pollution in the urban area were presented at the end of the paper.
Źródło:: Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 284-293
1506-218X
Pojawia się w:: Rocznik Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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