EXERGY-BASED CONTROL STRATEGY IN A DWELLING VENTILATION SYSTEM WITH HEAT RECOVERY

Volodymyr Voloshchuk

Vl.Volodya@gmail.com
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Department of Automation of Thermal (Ukraine)
http://orcid.org/0000-0003-0687-8968

Mariya Polishchuk


National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Department of Automation of Thermal (Ukraine)
http://orcid.org/0000-0003-2273-3750

Abstract

The paper presents energy and exergy analysis of a typical dwelling ventilation system with heat recovery for Ukrainian climatic conditions using a quasi-steady state approach over 24-hour time-steps. Evaluation of such systems on the base of the first law of thermodynamics demonstrates that heat recovery is beneficial for the whole variety of operational modes. Such methodology identifies as a thermodynamic inefficiency only energy losses to the surroundings with the exhaust air. The exergy-based analysis can detect additional inefficiencies due to irreversibilities within the components of the system. As a result the exergetic investigations show that for the ventilation systems there are operating conditions for which heat recovery increases exergy of fuel expended to provide the ventilation air compared to cases without bringing any recovery of heat and additional power consumption to drive the air flow by the fans. For the specified system, in case of switching ventilation unit to the operation mode of lower values of spent fuel exergy it is possible to provide annual saving of the primary energy sources from 5 to 15%.


Keywords:

ventilation system, exergy analysis, control, heat recovery, exergy saving

Gjennestad M.Aa., Aursand E., Magnanelli E., Pharoah J.: Performance analysis of heat and energy recovery ventilators using exergy analysis and nonequilibrium thermodynamics. Energy and Buildings 170, 2018, 195–205.
DOI: https://doi.org/10.1016/j.enbuild.2018.04.013   Google Scholar

Hepbasli A.: Low exergy (LowEx) heating and cooling systems for sustainable buildings and societies. Renewable and Sustainable Energy Reviews 16(1), 2012, 73–104.
DOI: https://doi.org/10.1016/j.rser.2011.07.138   Google Scholar

Jensen J.K., Ommen T., Reinholdt L., Markussen W.B., Elmegaard B.: Heat pump COP, part 2: Generalized COP estimation of heat pump processes. Proceedings of the 13th IIR-Gustav Lorentzen Conference on Natural Refrigerants 2, 2018, 1136–1145.
  Google Scholar

Laverge J., Janssens A.: Heat recovery ventilation operation traded off against natural and simple exhaust ventilation in Europe by primary energy factor, carbon dioxide emission, household consumer price and exergy. Energy and Buildings 50, 2012, 315–323.
DOI: https://doi.org/10.1016/j.enbuild.2012.04.005   Google Scholar

Mert Cuce P., Riffat S.: A comprehensive review of heat recovery systems for building applications. Renewable and Sustainable Energy Reviews 47, 2015, 665–682.
DOI: https://doi.org/10.1016/j.rser.2015.03.087   Google Scholar

Rosen M.A., Dincer I.: Effect of varying dead-state properties on energy and exergy analyses of thermal systems. International Journal of Thermal Sciences 43, 2004, 121–133.
DOI: https://doi.org/10.1016/j.ijthermalsci.2003.05.004   Google Scholar

Sakulpipatsin P., Boelman E., Cauberg J.J.M.: Exergy analysis as an assessment tool of heat recovery of dwelling ventilation systems. Int. J. of Ventilation 6(1), 2007, 77–85.
DOI: https://doi.org/10.1080/14733315.2007.11683767   Google Scholar

Tsatsaronis G.: Definitions and nomenclature in exergy analysis and exergoeconomics. Energy 32, 2007, 249–253.
DOI: https://doi.org/10.1016/j.energy.2006.07.002   Google Scholar

Zmeureanu R., Wu X.Y.: Energy and exergy performance of residential heating systems with separate mechanical ventilation, Energy 32(3), 2007, 187–195.
DOI: https://doi.org/10.1016/j.energy.2006.04.007   Google Scholar

National Standard of Ukraine: Instruction for development of energy passport of buildings under new construction and reconstruction: DSTU-N B A.2.2-5:2007. Minregionbud of Ukraine, Kiev 2008.
  Google Scholar

Download


Published
2020-06-30

Cited by

Voloshchuk, V., & Polishchuk, M. (2020). EXERGY-BASED CONTROL STRATEGY IN A DWELLING VENTILATION SYSTEM WITH HEAT RECOVERY. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 10(2), 44–47. https://doi.org/10.35784/iapgos.933

Authors

Volodymyr Voloshchuk 
Vl.Volodya@gmail.com
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Department of Automation of Thermal Ukraine
http://orcid.org/0000-0003-0687-8968

Authors

Mariya Polishchuk 

National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Department of Automation of Thermal Ukraine
http://orcid.org/0000-0003-2273-3750

Statistics

Abstract views: 306
PDF downloads: 204