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    Wyświetlanie 1-5 z 5
    Tytuł:
    The Analysis of Efficiency and Investment Profitability of a Solar Water Heating System in a Multi-Family Building
    Autorzy:
    Herbut, P.
    Rzepczyński, M.
    Angrecka, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/125330.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    solar water heating system
    DHW
    solar radiation
    gas
    economy
    multi-family building
    Opis:
    The study analyses the efficiency of a Solar Water Heating (SWH) system, potential financial savings and investment profitability. The analysis pertaining to the amount of energy generated by the collectors had been performed for the multi-family building within the span of two years. The efficiency of the system was determined by comparing the amount of energy from solar radiation incident on the surface of the collectors to the amount of energy generated by the collectors and fed to the existing Domestic Hot Water (DHW) system. The amount of energy generated by the collectors was approx. 70 GJ per year, at the efficiency of the SWH system equalling 36%. The best time for the operation of the system was the period from April to September, during which the share of generated for DHW amounted to 78%. It is reflected in the decreased consumption of gas by 6% throughout the year. Furthermore, based on the data about the efficiency and energy yield of the set of collectors, as well as data on insolation, the analysis was performed to determine the installation and operation costs and the depreciation period of the investigated SWH system.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 6; 75-80
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology for measurement the energy efficiency involving solar heating systems using stochastic modelling
    Autorzy:
    Menita, B. G.
    Medeiros, G. P.
    Domingos, J. L.
    Domingues, E. G.
    Alves, A. J.
    Faria, A. F.
    Miguel, M. L. S.
    Calixto, W. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/136254.pdf
    Data publikacji:
    2017
    Wydawca:
    EEEIC International Barbara Leonowicz Szabłowska
    Tematy:
    energy efficiency
    geometric brownian motion
    Monte Carlo simulation
    performance measurement
    verification
    solar water heating
    Opis:
    The purpose of the present study is to evaluate gains through measurement and verification methodology adapted from the International Performance Measurement and Verification Protocol, from case studies involving Energy Efficiency Projects in the Goias State, Brazil. This paper also presents the stochastic modelling for the generation of future scenarios of electricity saving resulted by these Energy Efficiency Projects. The model is developed by using the Geometric Brownian Motion Stochastic Process with Mean Reversion associated with the Monte Carlo simulation technique. Results show that the electricity saved from the replacement of electric showers by solar water heating systems in homes of low-income families has great potential to bring financial benefits to such families, and that the reduction in peak demand obtained from this Energy Efficiency Action is advantageous to the Brazilian electrical system. Results contemplate also the future scenarios of electricity saving and a sensitivity analysis in order to verify how values of some parameters influence on the results, once there is no historical data available for obtaining these values.
    Źródło:
    Transactions on Environment and Electrical Engineering; 2017, 2, 1; 42-51
    2450-5730
    Pojawia się w:
    Transactions on Environment and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solar Hot Water Heating and Electricity Generation Using PV/T Hybrid System
    Autorzy:
    Badran, Ali A.
    Obeidat, Firas A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086426.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    solar energy system
    water heating system
    PV module
    flat plate solar collector
    Opis:
    Experimental work has been carried out to study the possibility of combining a conventional solar water collector with a hybrid device, developed previously and known as PV/T system, in order to obtain hot water with temperature above 40 °C. The effect of the combination on the productivity of hot water and the produced electricity was found. The formerly developed device, in which there was a multi-purpose solar collector, can produce hot water and electricity. It was connected to the conventional fin-tube collector in series in order to raise the product temperature to a higher level. This development was achieved for the first time as a combination between a PV/T and a conventional fin-tube collector. Instrumentation to measure temperatures, solar radiation, wind speed and flow rate was installed on the system. It was found that the water temperature was raised from 29 °C to 32 °C in the PV/T collector system and, after flowing through the conventional collector, it was raised to 50 °C and above. It was also found that the power efficiency in the case of water flow is always higher than in the case of no water flow.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 5; 196--206
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conceptual adsorption system of cooling and heating supplied by solar energy
    Autorzy:
    Turski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/952679.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    solar cooling
    solar heating
    solar energy
    adsorption chiller
    adsorption ice water
    generator
    chłodzenie słoneczne
    ogrzewanie słoneczne
    energia słoneczna
    adsorpcja wody lodowej
    Opis:
    This paper presents the possibility of reducing the demand for nonrenewable primary energy for buildings using a new conceptual adsorption system of cooling and heating supplied by solar energy. Moreover, the aim of this study is to shorten the payback time of investment in the standard adsorption cooling system through its integration with the heating system. Research has been carried out for an energy-efficient medium-sized single-family building with a floor area of 140 m 2 and a heat load of 4.2 kW and cold load of 4.41 kW. It has been shown that the use of an adsorption system of cooling and heating supplied by solar energy decreased the demand for nonrenewable primary energy by about 66% compared to the standard building that meets the current requirements.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 2; 293-304
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of solar collectors on the example of a water-park. Part 1: Technical analysis
    Wykorzystanie kolektorow slonecznych na przykladzie parku wodnego. Cz. 1: Analiza techniczna
    Autorzy:
    Tucki, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/793132.pdf
    Data publikacji:
    2016
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    solar collector
    technological analysis
    modernization
    energy system
    water park
    heating system
    swimming pool
    venting system
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2016, 16, 1
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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