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    Wyświetlanie 1-9 z 9
    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:
    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:
    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:
    Methodology of solar installation design for water heating system in the swimming pool in Tarnów
    Autorzy:
    Wachowicz-Pyzik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/184467.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    solar energy
    solar instalations
    vacuum-tube collectors
    renewable energy sources
    Opis:
    The aim of this article is to present designing methodology of solar installation for hot water, which allows us to determine the maximum benefit of a solar system. The complicated process of designing solar installation, is based mostly on the solar exposure conditions and hot water demand. Therefore, designing a particular solar system is a multi-objective task and should be performed carefully. Based on the proposed methodology, a conceptual model of the solar system for the swimming pool in Tarnów is presented. Designed solar installation was assumed to cover the demand of the object for domestic hot water consumption by 40% during the year. As a result, 270 vacuum-tube solar collectors were selected. The various stages of the design of solar installations, as well as a detailed economic analysis with the determination of the profitability of investments in two variants are discussed. In both assumed variants the payback period was quite satisfactory. Also, the sensitivity analysis was conducted and the main factors affecting the return of investment were determined.
    Źródło:
    Geology, Geophysics and Environment; 2012, 38, 3; 339-351
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    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
    Tytuł:
    Analysis of energy costs in a single family house with gas boiler for a heating system and solar collectors in a domestic hot water system
    Autorzy:
    Wądołowska, Bernadetta
    Krawczyk, Dorota Anna
    Powiązania:
    https://bibliotekanauki.pl/chapters/31015901.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    renewable energy sources
    solar collectors
    DHW
    heating
    Opis:
    Solar collectors are commonly used in domestic hot water (DHW) systems in different types of buildings. In this paper we conducted the analysis for a single family house located in two countries: Poland (Warsaw) and Spain (Madrid). Various factors like national rules, climatic conditions, investment costs or fuel and electricity prices were taken into consideration. We took into account flat-plate and vacuum pipe collectors to select the best solution. The results show that the use of solar collectors in Poland and Spain is economically justified. Moreover we analyzed heat loses and annual operating costs of the heating installation for both buildings and they were found to be at a similar level, due to high fuel prices in Spain.
    Źródło:
    Innovations – Sustainability – Modernity – Openness. Energy; 9-17
    9788366391291
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of heating and hot water supply system like a power of low-temperature heating utilization in combination with solar collectors
    Projektowanie ogrzewania i systemu ciepłej wody użytkowej jako źródeł niskotemperaturowych w połączeniu z kolektorami słonecznymi
    Autorzy:
    Jasminska, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/2065154.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    heating systems
    hot water supply systems
    renewable energy sources
    system centralnego ogrzewania
    system przygotowania ciepłej wody użytkowej
    odnawialne źródła energii
    Opis:
    The low-potential sources in combination with solar devices used in supply heating systems present a perspective alternative to fossil energy in both economic and environmental point of view. The issue of low-temperature heating and renewable energy sources at present, when humanity stands on the threshold of fuel-energy sources selection, is extraordinarily important. Currently the solar energy, geothermal water energy and environmental energy used in supply of heating systems with low-energy potential present a perspective alternative in comparison to limited fossil energy. The energy utilization appropriateness depends on geographic area and climate zone. The article presents and solves the design issue of low-temperature heat pump system in combination with solar panel devices.
    Niskotemperaturowe źródła w połączeniu z urządzeniami słonecznymi w systemach ogrzewania stanowią perspektywicznie alternatywę dla paliw kopalnych z punktu widzenia ekonomicznego i środowiskowego. Kwestia niskotemperaturowego ogrzewania i odnawialnych źródeł energii jest w chwili obecnej, kiedy ludzkość stoi na progu paliwowo-energetycznego doboru źródeł, niezwykłe ważna. Obecnie energia słoneczna, geotermalna i inne źródła niekonwencjonalne wykorzystywane w systemach ciepłowniczych są alternatywą w porównaniu do ograniczonych zasobów energii z paliw kopalnych. Wykorzystanie energii jest uzależnione od obszaru geograficznego i strefy klimatycznej. Artykuł przedstawia rozwiązanie niskotemperaturowego systemu pompy ciepła w połączeniu z panelami słonecznymi.
    Źródło:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2013, 1 (11); 34--43
    2299-8535
    2544-963X
    Pojawia się w:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water-paraffin dispersion systems: manufacturing and application
    Autorzy:
    Yovchenko, Alla
    Bespalko, Sergii
    Tryhub, Oksana
    Poliakov, Sviatoslav
    Baret, Guy
    Munoz, Miranda Alberto
    Powiązania:
    https://bibliotekanauki.pl/articles/1429993.pdf
    Data publikacji:
    2020
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    heat storage
    phase change material
    phase change suspension
    surface active agent
    enthalpy
    solar heating system
    magazynowanie ciepła
    materiał o przemianie fazowej
    środek powierzchniowo czynny
    entalpia
    system ogrzewania słonecznego
    Opis:
    The paper presents the study results of the stability and heat storage capacity of paraffin-in-water phase change suspensions (PCSs) obtained by the homogenization of paraffin and water in the developed rotary hydrodynamic homogenizer. The optimal concentration of components for obtaining stable paraffin-in-water suspensions is found. It is shown that the stable PCSs in the form of pastes, gels, and liquids can be obtained depending on the concentration of water, paraffin, and the surface active agent (SAA) as well as its type. In addition, the scheme of the solar heating system with the heat storage tank where the PCS functions both as the heat transfer fluid and the heat storage media is presented. It is shown that the use of PCS in the domestic solar heating system allowed the heat storage capacity of the storage tank to be increased by 25% as a result of the high fusion heat of paraffin and the high value of the water specific heat capacity. The estimation of the saving rate from applying fluid PCS as a heat storage medium is also presented and discussed.
    Źródło:
    Acta Innovations; 2020, 36; 31-47
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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