Study of parameters of operation of the fan in a thermally non-stationary ventilation system
Abstract
Study of parameters of operation of the fan in a thermally non-stationary ventilation system
Incoming article date: 03.10.2017The aim of this work is determination of regularities that determine the operation parameters of the fan in a thermally non-stationary ventilation system contains a heater located along the air flow after the fan. It is established that the ventilation system, containing the heater, has two characteristics aerodynamic resistance related to the volumetric air flow at the sections of the network before and after the heater. It is proved that when using the superposition method, P-L characteristics to determine the parameters of the fan in the system, you must apply the P-L characteristic of the network is related to the volumetric air flow to the heater. The obtained dependences determine the parameters of the fan depending on its aerodynamic characteristics and the location of the heater in the system.
Keywords: the ventilation system is in a thermally transient mode, fan, heater, energy efficiency, energy conservation