On the efficient use of a lowtemperature heat source by the organic Rankine cycle

• Autorzy: Mikielewicz D. , Mikielewicz J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

organic rankine cycle; heat supply; energy efficiency

PL

organiczny obieg Rankine'a; dostawy ciepła; efektywność energetyczna

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2013
• Tom: Vol. 34, no. 3
• Strony: 61--73
• Opis fizyczny: Bibliogr. 6 poz., il.

Twórcy

autor

Mikielewicz D.

• The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland
• Gdańsk University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Mikielewicz J.

• Gdańsk University of Technology, Faculty of Mechanical Engineering, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

• [1] Mikielewicz D., Mikielewicz J.: Utilisation of bleed steam heat to increase the upper heat source temperature in low-temperature ORC. Arch. Thermodyn. 32(2011), 3, 57-70.
• [2] Liu B-T, Chien K-H, Wang C-C.: Effect of working fluids on organic Rankine cycle for waste heat recovery. Energy 29(2004), 1207-1217.
• [3] Saleh B., Koglbauer G., Wendland M., Fischer J.: Working fluids for low temperature organic Rankine cycles. Energy 32(2007), 1210-1221.
• [4] Lakew A.A., Bolland O.: Working fluids for low-temperature heat Skurce. Appl. Therm. Eng. 30(2010), 1262-1268.
• [5] Khennich M., Galanis N.: Thermodynamic analysis and optimization of power cycles using a finite low-temperature heat source. Int. J. Energ. Res. 2011, Res. DOI:10.1002/er.1839.
• [6] Refprop 9.0. National Institute of Standards, 2010.