Studies on the process of recovering low-temperature waste heat from a flue gas in a pilot-scale plant

• Autorzy: Szulc P. , Tietze T. , Wójs K.

Identyfikatory

DOI

10.1515/cpe-2016-0043

• Języki publikacji: EN

Abstrakty

EN

This paper presents studies carried out in a pilot-scale plant for recovery of waste heat from a flue gas which has been built in a lignite-fired power plant. The purpose of the studies was to check the operation of the heat recovery system in a pilot scale, while the purpose of the plant was recovery of waste heat from the flue gas in the form of hot water with a temperature of approx. 90 °C. The main part of the test rig was a condensing heat exchanger designed and built on the basis of laboratory tests conducted by the authors of this paper. Tests conducted on the pilot-scale plant concerned the thermal and flow parameters of the condensing heat exchanger as well as the impact of the volumetric flow rate of the flue gas and the cooling water on the heat flux recovered. Results show that the system with a condensing heat exchanger for recovery of low-temperature waste heat from the flue gas enables the recovery of much higher heat flux as compared with conventional systems without a condensing heat exchanger.

Słowa kluczowe

EN

heat recovery; condensation; inert gas

PL

odzysk ciepła; kondensacja; gaz obojętny

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2016
• Tom: Vol. 37, nr 4
• Strony: 529--543
• Opis fizyczny: Bibliogr. 11 poz., fot., rys., tab.

Twórcy

autor

Szulc P.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Tietze T.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Wójs K.

• Wrocław University of Technology, Faculty of Mechanical and Power Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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• 2. Chaojun W., Boshu H., Shaoyang S., Ying W., Na Y., Linbo Y., Xiaohui P., 2012. Application of a low pressure economizer for waste heat recovery from the exhaust flue gas in a 600 MW power plant. Energy, 48, 196-202. DOI: 10.1016/j.energy.2012.01.045.
• 3. Dexin W., Ainan B., Kunc W., Liss W., 2012. Coal power plant flue gas waste heat and water recovery. Appl. Energy, 91, 341-348. DOI: 10.1016/j.apenergy.2011.10.003.
• 4. Rączka P., Wójs K., 2014. Methods of thermal calculations for a condensing waste-heat exchanger. Chem. Process Eng., 35, 447-461. DOI: 10.2478/cpe-2014-0034.
• 5. Szulc P., Tietze T., Wójs K., 2013. The influence of the volumetric flow of exhaust gas on low temperature waste heat recovered in condensing heat exchanger, In: Węglowski B., Duda P. (Eds.), Analysis of power energy systems. Publishing House of the Cracow University of Technology, Kraków, 317-330, (in Polish).
• 6. Szulc P., Tietze T., Wójs K., 2012. Balance model of the counter-current heat exchanger with horizontal arrangement of the cooling tubes, In: Wójs K., Szulc P., Tietze T. (Eds), Current directions of power energy development. Publishing House of the Wrocław University of Technology, Wrocław, 113-123 (in Polish).
• 7. Szulc P., Tietze T., Wójs K., Numerical analysis of a waste heat recovery process with account of condensation of steam from flue gases. Arch. Civil Mech. Eng., 2015, 15, 1017-1023. DOI: 10.1016/j.acme.2015.05.002.
• 8. Tietze T., Szulc P., Lepszy M., Wójs K., 2014. Test rig of the heat exchanger to recover waste heat from the exhaust gas. Rynek Energii, 3(112), 93-100 (in Polish).
• 9. Wójs K., Szulc P., Tietze T., Sitka A., 2010. Concept of a system for waste heat recovery from flue gases in a coal-fired power plant, J. Energy Science, 1(1), 191-200. Available at: OAI: www.dbc.wroc.pl:4928.
• 10. Wójs K., Szulc P., Tietze T., 2015. The recovery of low temperature waste heat from the exhaust gas, In: Wójs K. (Ed.), Recovery and development of low temperature waste heat from the exhaust gas (Odzysk i zagospodarowanie niskotemperaturowego ciepła odpadowego ze spalin wylotowych). Wydawnictwo Naukowe PWN, Warszawa, 1-111 (in Polish).
• 11. Xiaojun S., Defu C., Brian Agnew b, Jianmin Gao, 2011. An investigation of the performance of compact heat exchanger for latent heat recovery from exhaust flue gases. Int. J. Heat Mass Transfer 54, 606-615. DOI: 10.1016/j.ijheatmasstransfer.2010.09.009.