Effect of the Volumetric Flow Rate Measurement Methodology of Positive Pressure Ventilators on the Parameters of the Drive Unit

Łukasz Warguła (), Piotr Kaczmarzyk, Piotr Lijewski, Paweł Fuć, Filip Markiewicz, Daniel Małozięć and Bartosz Wieczorek
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Łukasz Warguła: Faculty of Mechanical Engineering, Institute of Machine Design, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland
Piotr Kaczmarzyk: Faculty of Mechanical Engineering, Institute of Machine Design, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland
Piotr Lijewski: Faculty of Civil Engineering and Transport, Institute of Internal Combustion Engines and Drives, Poznan University of Technology, Piotrowo 3, 60-965 Poznań, Poland
Paweł Fuć: Faculty of Civil Engineering and Transport, Institute of Internal Combustion Engines and Drives, Poznan University of Technology, Piotrowo 3, 60-965 Poznań, Poland
Filip Markiewicz: Faculty of Civil Engineering and Transport, Institute of Internal Combustion Engines and Drives, Poznan University of Technology, Piotrowo 3, 60-965 Poznań, Poland
Daniel Małozięć: Scientific and Research Centre for Fire Protection, National Research Institute, Nadwiślańska 213, 05-420 Józefów, Poland
Bartosz Wieczorek: Faculty of Mechanical Engineering, Institute of Machine Design, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland

Energies, 2023, vol. 16, issue 11, 1-13

Abstract: The nature and conditions of the execution of tests (open or duct flow) in terms of evaluating the flow rate generated by positive pressure ventilators (PPV) may affect the parameters of the drive unit recorded during testing. In this article, popular PPVs (conventional type—W1 and turbo type—W2) of about 4.2 kW were tested under open flow (Method A) and duct flow (Method B) conditions. During the tests, engine load values were recorded: torque, speed, horsepower and, using portable emissions measurement systems (PEMS), exhaust gas emissions: carbon monoxide (CO), carbon dioxide (CO 2 ), hydrocarbons (HC), nitrogen oxides (NO x ) and fuel consumption. Depending on the method used to measure ventilator flow rates, drive units can have different drive power requirements (from 3.2% to 4.5%). Changes in drive unit operating conditions induced by the flow measurement method are observed in the results of fuel consumption (from 0.65% to 9.8%) and emissions of harmful exhaust compounds: CO 2 up to 2.4%, CO up to 67%, HC up to 93.2% and NO x up to 37%. The drive units of turbo type fans (W2) are more susceptible to the influence of the test methods in terms of flow assessment, where they have higher emissions of harmful exhaust gases when tested by Method A. Flow measurement methods affect the oscillation of propulsion power, which contributes to disturbances in the control of the fuel–air mixture composition. The purpose of this article is to analyse the impact of testing methods for measuring the flow rate of positive pressure ventilators on the performance of the drive unit.

Keywords: portable emissions measurement systems (PEMS); fuel consumption; non-road small engine; methods of measuring fan flow rates; positive pressure ventilators (PPV); mobile fan (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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