TY - JOUR TI - Vibration isolation of variable fan speed in HVAC systems AU - Przydróżny, Edward AU - Walaszczyk, Juliusz TI - Vibration isolation of variable fan speed in HVAC systems AB - This article analyses two samples of existing vibration isolation systems. The first sample applies to rubber absorbers, the second, to spring absorbers. The article presents a method of setting the parameters of a second order differential equation describing oscillation movement. The equation parameters were selected on the basis of amplitude measurement and rotation velocity in two representative points – (i) in the resonance and (ii) at the maximum rotation velocity when the influence of the damping factor for the oscillation amplitude can be ignored. Equations of motion simulations were performed and the results were compared with the actual values of displacement and the velocity vibration platform. VL - 2014 IS - Mechanika Zeszyt 2-M (13) 2014 PY - 2014 SN - 0011-4561 C1 - 2353-737X SP - 31 EP - 44 DO - 10.4467/2353737XCT.14.288.3376 UR - https://ejournals.eu/czasopismo/czasopismo-techniczne/artykul/vibration-isolation-of-variable-fan-speed-in-hvac-systems