Artículo de revista
Assessment criteria of the feasibility of replacement standard efficiency electric motors with high-efficiency motors
Registro en:
0360-5442
10.1016/j.energy.2021.121877
1873-6785
Corporación Universidad de la Costa
REDICUC - Repositorio CUC
Autor
R. Gómez, Julio
Sousa, Vladimir
Cabello Eras, Juan José
Sagastume Gutiérrez, Alexis
Viego, Percy R.
Quispe, Enrique C.
de León, Gabriel
Institución
Resumen
Currently, the feasibility to replace standard efficiency electric motors with higher efficiency ones is
assessed with considerations differing from real operating conditions in the industry. This study compares the feasibility of replacing 26 standard efficiency motors (IE1) with high-efficiency efficiency ones
(IE2 and IE3) in a sugar plant, based on three different energy scenarios and considering the incremental
costs or depreciated costs of motors. Energy scenario 1 consider that motors operate for 6000 h/year at
full load and nominal efficiency. While scenarios 2 and 3 consider the measured operating time and the
load factor of motors. The results show that scenario 1 overestimates electricity consumption between 2
and 18 times, contrasted with a difference of 1e7% in scenarios 2 and 3, leading to saving potentials in
scenario 1 between 1.2 and 33.4 times higher than for scenarios 2 and 3. Considering the incremental
costs in scenario 1, it is feasibly to replace all the motors in the plant, while it is only feasibly to replace
three motors in scenarios 2 and 3 with the depreciated costs. Therefore, the use of scenario 1 based on
unrealistic conditions and leading to economic loss, should be avoided in future studies.