Temat: obieg Rankine’a - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparative investigation of working fluids for an organic Rankine cycle with geothermal water
Autorzy:: Liu, Y.-N.
Xiao, S.
Powiązania:: https://bibliotekanauki.pl/articles/240415.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: geothermal water
energy efficiency
organic Rankine cycle
wody geotermalne
efektywność energetyczna
organiczny obieg Rankine'a
Opis:: In this paper, the thermodynamic investigation on the use of geothermal water (130°C as maximum) for power generation through a basic Rankine has been presented together with obtained main results. Six typical organic working fluids (i.e., R245fa, R141b, R290, R600, R152a, and 134a) were studied with modifying the input pressure and temperature to the turbine. The results show that there are no significant changes taking place in the efficiency for these working fluids with overheating the inlet fluid to the turbine, i.e., efficiency is a weak function of temperature. However, with the increasing of pressure ratio in the turbine, the efficiency rises more sharply. The technical viability is shown of implementing this type of process for recovering low temperature heat resource.
Źródło:: Archives of Thermodynamics; 2015, 36, 2; 75-84
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: On the efficient use of a lowtemperature heat source by the organic Rankine cycle
Autorzy:: Mikielewicz, D.
Mikielewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/240003.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: organic rankine cycle
heat supply
energy efficiency
organiczny obieg Rankine'a
dostawy ciepła
efektywność energetyczna
Opis:: The evaporation temperature is regarded as one of the major parameters influencing the organic Rankine cycle (ORC) efficiency. Majority of contributions in literature for ORC cycle analyses treat the heat source as if it had an infinite heat capacity. Such analyses are not valuable as the resulting temperature drops of the heat source needs to be small. That leads to the fact that the heat source is not well explored and in the case of waste heat utilization it can prove the poor economics of the ORC. In the present study cooperation of the ORC cycle with the heat source available as a single phase or phase changing fluids is considered. The analytical heat balance models have been developed, which enable in a simple way calculation of heating fluid temperature variation as well as the ratio of flow rates of heating and working fluids in ORC cycle. The developed analytical expressions enable also calculation of the outlet temperature of the heating fluid.
Źródło:: Archives of Thermodynamics; 2013, 34, 3; 61-73
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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