Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "heating temperature" wg kryterium: Wszystkie pola


Wyświetlanie 1-6 z 6
Tytuł:
Optimisation of the Thermal Process in Ladle Metallurgy in Terms of the Impact on Energy Consumption and the Environmental Burden During Steel Production
Autorzy:
Lampa, Martin
Mokrošová, Lenka
Powiązania:
https://bibliotekanauki.pl/articles/2174906.pdf
Data publikacji:
2022
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
casting ladle
ladle furnace
extra-furnace processing
lining
energy consumption
ecological burden
steel production
continuous casting
high-temperature heating
Opis:
The paper focuses on reducing the energy intensity of ladle metallurgy as part of steel production and the associated reduction of pollutant emissions. It can be achieved by optimising the thermal work of metallurgical aggregates in terms of the impact on energy consumption and the environmental burden of steel production. It is about minimising the heat loss of liquid steel in the casting ladle throughout the entire process, from the melting equipment, through the extra-furnace processing, to the continuous casting of the steel.
Źródło:
Rocznik Ochrona Środowiska; 2022, 24; 246--259
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ sterowania czasem pracy węzła cieplnego na stan temperaturowo-wilgotnościowy przegród budowlanych
Influence of heating system controlling on the temperature and humidity conditions of the walls
Autorzy:
Szkarowski, A.
Dyczkowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1826007.pdf
Data publikacji:
2008
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
węzły cieplne
ogrzewnictwo
instalacja centralnego ogrzewania
oszczędzanie energii cieplnej
Opis:
Jednym z najbardziej efektywnych, prostych i nisko kosztowych sposobów oszczędzania energii w ogrzewnictwie jest uzasadnione dopuszczalne obniżenie temperatury w pomieszczeniach ogrzewanych stosując czasowe wyłączanie instalacji c.o. W większości przypadków nowoczesnych węzłów cieplnych zastosowanie metody, opiera się wyłącznie o dokładnie przeprowadzone obliczenia, nie wymagając żadnego dodatkowego wyposażenia [1]. W budynkach o czasowym przebywaniu ludzi (większość budynków użyteczności publicznej, szkoły, biurowce itp.) metoda pozwala na oszczędzanie około 20% zapotrzebowania ciepła w sezonie grzewczym [2]. Pewnym paradoksem jest fakt, że tak łatwa do wdrożenia i efektywna metoda nadal jest mało stosowana. Istnieje kilka wyjaśnień takiego stanu rzeczy. Po pierwsze sterowanie czasem pracy często mylone jest z regulacją pogodową czy też z regulacją według krzywych grzania. Jednak bardziej istotną przyczyną jest obawa specjalistów dotycząca obniżenia temperatury przegród budowlanych i co za tym idzie - ich zawilgocenia. Autorzy chcą udowodnić, iż oszczędzanie energii cieplnej przy pomocy omawianej metody nie wpływa niekorzystnie na stan temperaturowowilgotnościowy konstrukcji ścian zewnętrznych. Sterowanie czasem pracy węzła c.o. zastosowano w budynku, w którym tylko okresowo przebywają ludzie. W takim przypadku obniżenie temperatury wewnątrz użytkowanych pomieszczeń jest w pełni uzasadnione, nie powoduje, bowiem obniżenia komfortu cieplnego, natomiast osiągany efekt jest maksymalny. Przedmiotem badań była obserwacja zmiany temperatury na obu powierzchniach ściany zewnętrznej oraz wewnątrz i na zewnątrz pomieszczenia.
One of the most effective, simple and low cost ways of energy saving in the house-heating is well-founded admissible lowering of temperature in heated rooms applying temporary switching off of the central heating installation. In the majority of modern heat centres application of the method is based only on exactly conducted calculations, requiring no additional equipment [1]. In buildings with temporar presence of people (majority of public usefulness buildings, schools, office buildings, etc.) this method allows to save about 20% of heat demand in the heating season [2]. A certain paradox is the fact, that so easy to introduce and effective method is still rarely applied. There are several explanations of state. First control of working time is often confused with weather control or with control according to heating curves.. However, more important cause is anxiety of experts concerning lowering of temperature of building walls and their damping as a result. Authors want to prove, that the saving thermal energy using mentioned method does not negatively influence temperature and humidity conditions of construction of external walls. Steering of heating centre working time was applied in a building in which people are periodically present. In such case lowering of the temperature inside used rooms is fully well-founded, because it does not cause lowering of the thermal comfort, and achieved effect is the highest. The paper presents an results of investigations performed in a thermally modernized building, in which a heating junction worktime control has been applied. The goal of this study was to substantiate the application of qualitative - quantitative regulations in highly insulated buildings. The authors have proven the effectiveness of the applied central heating controlling method in the economical aspect (fig. 1). Results show that the introduced method gives a large energy savings, in comparison to the most often used the economical setting controller. Research and simulations of temperature fluctuations in a building wall prove that there is no risk of wall damage. The results are presented in table 1 and in figures 2 and 3 with the theoretical calculations supplement of temperature fluctuations for the standard values (table 2). The analysis proves that if there is no long-lasting decrease of temperature inside wall then there is no is no cool down of the structure. The temperature and humidity conditions of walls are safe for construction wall because vapour is not condensing on the wall.
Źródło:
Rocznik Ochrona Środowiska; 2008, Tom 10; 343-350
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geothermal Potential of the Lublin Trough is Low-temperature and North-concentrated. What May Be Environmental Impact of Their Use?
Autorzy:
Ciapała, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/27315746.pdf
Data publikacji:
2023
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
geothermal
district heating
energy
heat
assessment
Opis:
The geothermal potential is challenging to assess, as on the one hand it requires subsurface parametric description; on another – the variable surface influences the potential and geological conditions. In the article, the author presents a novel method for assessing geothermal potential and its environmental impact. The procedure is implemented to evaluate the geothermal potential of the Lublin trough. Geological modelling and GIS analyses are used to determine prospective areas where geothermal water accessibility and sufficient head demand occur in the direct vicinity. Maximal geothermal heat production is estimated, and upon that – possible avoided emissions of air pollutants. The study results indicate that this region's geothermal resources are of low temperature (<50°C), so the only opportunity for exploitation is the direct use of geothermal water in objects or the operation of ultra-low-temperature district heating systems. The main geothermal energy production potential of the Lublin trough is in its northern part, close to the Warszawa trough and nearby main fracture zones. In total, up to 300 GWh of geothermal heat per year might be produced and consumed in the study area if residential and commercial objects could take advantage of ultra-low-temperature district heating system. It would lead to locally significant limitation of air pollutant emissions and decreased fossil fuel consumption.
Źródło:
Rocznik Ochrona Środowiska; 2023, 25; 86--104
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
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
Tytuł:
Impact of Heating System Local Control on Energy Consumption in Apartment Buildings
Autorzy:
Deshko, Valerii
Bilous, Inna
Maksymenko, Oleksandra
Powiązania:
https://bibliotekanauki.pl/articles/27315745.pdf
Data publikacji:
2023
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
energy saving
internal temperature
energy control
consumption energy for heating
residential buildings
modelling
Opis:
Improving the energy efficiency of residential buildings is ensured by improving the thermal protection characteristics and the wider introduction of control tools. In order to take into account the influence of individualisation of operating conditions, the study of the regulation of heating distribution of a single-pipe system with bypassed heating devices of a 5-storey typical for Ukraine mass building of the 80s after thermos-modernisation for conditions in Kyiv and Warsaw (Poland) was carried out. On the basis of the simulation model created in the Mathcad software environment for design/rated and average climatic conditions, the influence of internal heat flows into adjacent rooms on the distribution of energy consumption, changes in internal air temperature under the influence of local changes in the heating device flow coefficients were studied. The developed approaches, and the results obtained on the influence of local regulation of devices of vertical single-pipe heating systems can be used to clarify the distribution of energy consumption for heating between individual zones of apartment buildings.
Źródło:
Rocznik Ochrona Środowiska; 2023, 25; 77--85
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transient Energy Models of Housing Facilities Operation
Autorzy:
Deshko, Valerii
Bilous, Inna
Biriukov, Dmytro
Yatsenko, Olena
Powiązania:
https://bibliotekanauki.pl/articles/2069893.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
dynamic modelling
simulation
temperature
heating system load
controller
Matlab
Simscape
Simulink
EnergyPlus
Opis:
Buildings are the main consumer of energy resources in the total energy balance of the countries in Central and Eastern Europe, the main energy consumption is allocated for heating. Efficient use of energy resources for heating needs to a large extent depends on the efficiency of regulation of heating systems. In the article, dynamic mathematical models of a two-room typical apartment in Ukraine, built in 2016, were developed in Matlab and EnergyPlus software environment. The simulations were carried out using IWEC hourly climate data for the city of Kyiv. The results of simulations of thermal energy consumption in Matlab are characterized by a larger range of fluctuations of the heating system load, which is typical for the real operating conditions of the system with the controller of ON/OFF type. In EnergyPlus it is assumed that the gas boiler operates continuously in the ON mode. In the research, the change of load on the apartment heating system was studied at different numbers and locations of air temperature control sensors installation, according to which the controller of the autonomous gas boiler operates.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 539--551
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies