Influence of voltage difference on energy characteristics of ventilation plants
DOI:
https://doi.org/10.31548/energiya2020.04.019Abstract
Abstract. Deviation of voltage from the nominal value leads to losses that have an electromagnetic and technological component.
Due to the voltage deviation, the angular velocity of the motor changes, which causes a change in the technological characteristics of the fan. However, no studies have been conducted on the effect of voltage deviation on the energy performance of ventilation systems.
The purpose of the study is to establish the effect of voltage deviation on energy characteristics of ventilation systems.
When the voltage deviates, the constant and variable losses in the asynchronous motor are change.
It is proposed to conduct an energy assessment of the ventilation unit for the specific power consumption.
Theoretical and experimental researches of influence of voltage deviation on power characteristics of ventilating installations are carried out. The dependences of productivity, power of the ventilation installation and specific consumption of electricity on voltage are obtained. It is established that when the voltage is reduced by 20 %, the productivity of the ventilation system is reduced to 3 %, power - up to 8 %, and the specific power consumption increases by 15%.
Key words: ventilation system, power, fan performance, specific power consumption
References
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