Abstract
The paper presents a part of ongoing research into the use of a proton exchange membrane fuel cell (PEM-FC) to power military installations and personal power supply of soldier or rescuer. Construction of this type device use elements, which generate vibration, noise and heat. Emitting these types of pollution worsens the detection of military installations as well as operator’s safety. The presented research includes the assessment of noise and vibration hazards generated by 20 Watt PEM-FC personal power supply which was created by Polish Naval Academy in consortium with Central Laboratory of Batteries and Cells in Poznan and Impact Clean Power Technology S.A. in Warsaw. Measurements of noise and vibration levels were performed in an anechoic chamber at AGH University of Science and Technology during nominal operation of the device. The vibration parameters transferred to external cover as well sound power level and the insulation effectiveness of device cover were determined.
Highlights
Nowadays, each of the existing or evolving military areas is dependent on electric power sources
proton exchange membrane fuel cell (PEM-FC) is an electrochemical converter of energy, replacing the chemical energy into electrical energy by controlled and separated reactions, i.e. oxygen reduction reaction (ORR) and hydrogen oxidation reaction (HOR), which occurs at the cell’s cathode and anode, respectively
Since the cell stack requires cooling and air/water vapor outlet, the current demonstrator uses cooling with constant speed air fan and a water vapor valve, which are the source of vibration transmitted to the casing and further emitted to the air as an acoustic waves
Summary
Each of the existing or evolving military areas is dependent on electric power sources. The advantages regarding power density and high energy conversion efficiency make this type of energy source attractive for powering objects where the amount of space and mass allocated to the electric power source is strictly limited Their construction uses elements (air or water vapor valves, air cooling fan) which generate noise and vibration, as a principle of operation requires the dissipation of heat [1]. Emitting these types of pollution into the environment worsens the detection of military installations as well as operator’s safety.
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