Informacja

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

Wyszukujesz frazę "coefficient of performance" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Review of mechanical vapour compression refrigeration system part 2: performance challenge
Autorzy:
Mahmood, R. A.
Ali, O. M.
Al-Janabi, A.
Al-Doori, G.
Noor, M. M.
Powiązania:
https://bibliotekanauki.pl/articles/2106451.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
para
układ chłodniczy
współczynnik wydajności
vapour compression
refrigeration system
cycle
coefficient of performance COP
Opis:
Reducing energy consumption and providing high performance for a vapour compression refrigeration system are big challenges that need more attention and investigation. This paper provides an extensive review of experimental and theoretical studies to present the vapour compression refrigeration system and its modifications that can be used to improve system’s performance and reduce its energy consumption. This paper also presents the challenges that can be considered as a gab of research for the future works and investigations. Cooling capacity, refrigerant effect, energy consumption can be improved by using vapour injection technique, natural working fluid, and heat exchanger. Based on the outcome of this paper, vapour injection technique using natural refrigerant such as water can provide ultimate friendly refrigeration system. Future vision for the vapour compression refrigeration system and its new design technique using Computational Fluid Dynamic (CFD) is also considered and presented.
Źródło:
International Journal of Applied Mechanics and Engineering; 2021, 26, 3; 119--130
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Portable heat pump testing device
Autorzy:
Kłosowiak, R.
Bartoszewicz, J.
Urbaniak, R.
Powiązania:
https://bibliotekanauki.pl/articles/265008.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
heat pump
renewable energy
coefficient of performance (COP)
pompa ciepła
energia odnawialna
współczynnik wydajności
Opis:
The aim of this paper is to present the design and working principle of a portable testing device for heat pumps in the energy recirculation system. The presented test stand can be used for any refrigerating/reverse flow cycle device to calculate the device energy balance. The equipment is made of two portable containers of the capacity of 250 liters to simulate the air heat source and ground heat source with a system of temperature stabilization, compressor heat pump of the coefficient of performance (COP) of = 4.3, a failsafe system and a control and measurement system.
Źródło:
International Journal of Applied Mechanics and Engineering; 2015, 20, 3; 657-662
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air–water heat pump applied as water boiler in singlefamily house, coefficient of performance analysis under the real conditions
Autorzy:
Lisowska-Lis, A.
Leszczyński, R.
Powiązania:
https://bibliotekanauki.pl/articles/93094.pdf
Data publikacji:
2018
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
heat pump
air-water
coefficient of performance
COP
pompa ciepła
powietrze-woda
współczynnik wydajności
Opis:
The subject of the research was an air-water heat pump, model PCUW 2.5kW from HEWALEX, installed in a single-family house. The pump is only used for heating water. The research was carried out from 25-08-2017 to 18-09-2017 in the village of Zborowice, in Malopolska region, Poland. The data were recorded from the heat pump system: temperature of the lower heat source (external air), temperature of the upper heat source (water temperature in the tank), time of heat pump was calculated during the analysed cycle of work and electrical energy consumption. The Coefficient Of Performance (COP) of the analysed air-water heat pump was determined. The analysis of the results was carried out using the MATLAB and EXCEL statistical tools. The correlation between COP coefficient and external air temperature is strong: 0.67.
Źródło:
Science, Technology and Innovation; 2018, 3, 2; 58-61
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operation of an adsorption chiller in different cycle time conditions
Autorzy:
Szyc, M.
Nowak, W.
Powiązania:
https://bibliotekanauki.pl/articles/185219.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adsorption chiller
coefficient of performance
silica gel adsorption
single stage system
adsorpcja
współczynnik wydajności
żel krzemionkowy
Opis:
This paper is devoted to application of adsorption process for cooling power generation in a cooling devices. Construction and working principle of a water-silica gel adsorption chiller has been presented and the basic refrigeration cycle has been discussed. The article outlines behavior of a single-stage adsorption system influenced by changes in cycle time. The effect of cycle time and inlet chilled water temperatures on the main system performance parameters has been analysed.
Źródło:
Chemical and Process Engineering; 2014, 35, 1; 109-119
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling the performance of water-zeolite 13X adsorption heat pump
Autorzy:
Kowalska, K.
Ambrożek, B.
Powiązania:
https://bibliotekanauki.pl/articles/240147.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
desorption
adsorption
mathematical simulation
heat pump
coefficient of performance
desorpcja
adsorpcja
symulacja matematyczna
pompa ciepła
współczynnik wydajności
Opis:
The dynamic performance of cylindrical double-tube adsorption heat pump is numerically analysed using a non-equilibrium model, which takes into account both heat and mass transfer processes. The model includes conservation equations for: heat transfer in heating/cooling fluids, heat transfer in the metal tube, and heat and mass transfer in the adsorbent. The mathematical model is numerically solved using the method of lines. Numerical simulations are performed for the system water-zeolite 13X, chosen as the working pair. The effect of the evaporator and condenser temperatures on the adsorption and desorption kinetics is examined. The results of the numerical investigation show that both of these parameters have a significant effect on the adsorption heat pump performance. Based on computer simulation results, the values of the coefficients of performance for heating and cooling are calculated. The results show that adsorption heat pumps have relatively low efficiency compared to other heat pumps. The value of the coefficient of performance for heating is higher than for cooling
Źródło:
Archives of Thermodynamics; 2017, 38, 4; 191--207
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorptive solar refrigerators based on composite adsorbents 'silica gel – sodium sulphate'
Autorzy:
Belyanovskaya, Elena A.
Pustovoy, Grigoriy N.
Sukhyy, Kostyntyn M.
Sergiyenko, Yana O.
Yeromin, Oleksandr O.
Prokopenko, Elena .
Gubinsky, Mikhailo V.
Kizek, Ján
Lukáč, Ladislav
Powiązania:
https://bibliotekanauki.pl/articles/396041.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
adsorptive refrigerator
composite adsorbent
coefficient of performance
adsorptive capacity
regeneration temperature
chłodziarka adsorpcyjna
adsorbent
współczynnik wydajności
zdolność adsorpcyjna
temperatura
Opis:
The operation processes of adsorptive solar refrigerators based on composite adsorbents ‘silica gel - sodium sulphate’ were studied. The correlation between the adsorbent composition and the coefficient of the energy performance of the device was stated. As a consequence of the decreasing of adsorbent mass, the coefficient of performance is increased when sodium sulphate content in the composite increased. Effect of the regeneration process parameters on the composite on the coefficient of performance of the adsorptive refrigenerator was stated. The growth of the coefficient of performance is shown to result from decreasing the difference between adsorbent temperature and regeneration temperature from 85 to 55°C. The maximum values of the coefficient of performance of studied solar adsorptive refrigenerator about of 1.14 are stated for composites containing about 20 wt. % silica gel and 80 wt. % sodium sulphate.
Źródło:
Civil and Environmental Engineering Reports; 2019, 29, 3; 200-208
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
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