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    Wyświetlanie 1-4 z 4
    Tytuł:
    Analyzing temperature changes in the ground massif with a horizontal heat exchanger in the course of the heating season
    Autorzy:
    Adamovsky, R.
    Neuberger, P.
    Sed'ova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/62442.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    temperature change
    ground massif
    horizontal heat exchanger
    heating season
    heat pump
    ground source heat pump
    heat transfer
    energy potential
    ground temperature
    temperature distribution
    Opis:
    The article is devoted to temperature changes in the ground massif with the horizontal heat exchanger as an energy source for a heat pump. The article was aimed at analyzing temperature changes in the ground massif with the horizontal heat exchanger at the beginning, in the course of and at the end of the heating season. Another aim was to analyze temperature differences in the area of the horizontal exchanger and the reference lot. The heat flow utilized in the evaporator of heat pump was extracted from the ground exchanger (nominal output at the condenser was 10.5 kW). Temperatures of the ground massif with the horizontal heat exchanger were measured in its plane in depths of 0.75 m, 0.5 m and 0.25 m. The temperature inside the ground massif on the reference lot and ambient parameters were measured as well. It is obvious that the difference of energetic potentials inside the ground massif with the heat exchanger and on the reference lot is insignificant at the beginning of the heating season. During the heating season, the difference of ground massif energetic potentials increases; at the end it is constant. The difference of temperatures in horizontal planes was not significant at the beginning of the heating season; however, it gradually increased. Maximum differences were detected in the area of the heat exchanger. In higher strata, the difference between temperatures decreases. During a major part of the heating season, temperatures at pipes of the ground exchanger were negative. This fact affected amounts of heat extracted from the ground massif.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2010, 11
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature changes in heat pump horizontal ground source
    Autorzy:
    Adamovsky, R.
    Neuberger, P.
    Sed'ova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/60337.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    temperature change
    heat pump
    ground massif
    horizontal heat exchanger
    heat potential
    soil
    thermal potential
    heating period
    ground temperature
    temperature distribution
    heat transfer
    energy conservation
    Opis:
    The paper deals with assessment of thermal fields and temperature changes in ground massif with horizontal heat exchanger used as a heat source for a heat pump. Temperatures in the zone of the horizontal ground exchanger are compared with temperatures in a reference land. Changes of heat potential of the soil during the heating period are also assessed. Possibilities of recovery of thermal potential of the ground massif when utilizing vertical and horizontal exchangers are analyzed in the opening part of the paper. The results of the first verification indicated that average temperatures in the horizontal planes of the ground massif did not differ considerably with distance from the exchanger tube. Differences in average temperatures in reference and experimental lands confirmed sufficient heat potential of the ground massif even at the peak of the heating period. The differences in average temperatures reached up to 6.51 K in the end of the heating period while at the beginning of the heating period, the differences in average temperatures dropped to 1.35 K. The differences between maximum and minimum temperatures in the zone of the ground exchanger reached up to 1.9 K at the peak of the heating period and rose to 3.9 K at the beginning and end of the heating period. The first results of our measurements indicate the necessity of accumulation of thermal energy in the soil massif in the summer period like in case of the vertical exchangers.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2009, 07
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of a heat pump and solar energy in the heat demand
    Autorzy:
    Noch, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/104452.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    heat pump
    solar energy
    Coefficient of Performance
    energy performance
    heat losses and gains
    heat power
    heat source
    heating
    heating appliances
    temperature
    investment costs
    heat demand
    Opis:
    The article presents the energy performance of a heat pump. The coefficient of performance was taken into account, which is the ratio of the heating energy obtained to the supplied electrical energy necessary for the compressor operation. The focus was on the issue of operating costs of using heat pumps. These costs are mainly influenced by two factors. Firstly, energy performance and the purchase price of electricity. The second factor is investment costs. Heat gains from solar energy were characterized. The value of the solar radiation transmission coefficient for the double glazing was assumed (TR = 0.7). Solar gains were shown in January for windows on the eastern and western facades. The analysis covered the seasonal heat demand for heating. The studies and calculations took into account the occurring heat losses and heat gains from the sun and internal sources with their utilization rate. Particular attention was paid to the fact that the peak power of heating appliances can be calculated by knowing the value of the annual energy demand for heating a building that takes into account the most severe external conditions prevailing in a given climate zone, i.e. the minimum outside temperature.
    Źródło:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 99-108
    2300-5130
    2300-8903
    Pojawia się w:
    Czasopismo Inżynierii Lądowej, Środowiska i Architektury
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance Analysis of Systems Powered by a Ground Source Heat Pump
    Autorzy:
    Fidorów-Kaprawy, Natalia
    Dudkiewicz, Edyta
    Zhelykh, Vasyl
    Powiązania:
    https://bibliotekanauki.pl/articles/2174908.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    heat pump
    SCOP
    heating ceiling
    cooling ceiling
    low-temperature radiator
    climatic conditions in Poland
    climatic conditions in Ukraine
    Opis:
    Heat pumps are known as zero-emission heating and cooling devices at the point of energy production. In order to exploit their advantages, they are combined with low-temperature heating systems. Using the example of a residential building in five climatic zones in Poland and one in Ukraine, systems analyses were carried out, in which heat into rooms is supplied in two different ways: low-temperature radiators and thermally active ceilings. The energy demand for heating, cooling and domestic hot water preparation was calculated. The seasonal coefficient of performance of the ground source heat pump was estimated to compare the systems. The results of the analysis confirmed that the thermo-active ceiling (with a flow temperature of 35°C) ensures a lower final energy demand when it works throughout the year in the heating and natural cooling mode compared to the low-temperature radiators (with a flow temperature of 45°C) which facilitate only the heating mode in the heating season. Performance analysis demonstrated differences in final electric energy demand from 8% in the I climatic zone to 9% in the V climatic zone in Poland and 10% in Ukraine.
    Źródło:
    Rocznik Ochrona Środowiska; 2022, 24; 294--306
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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