INNOVATSION TEXNOLOGIYALAR Maxsus son, 2023-yil, dekabr
ISSN 2181-4732
24
=
р
∙
∙ (
−
) +
=
р
∙
∙ (
−
)
(4)
For multi-stage compression
= ∑
р
∙
∙ (
−
)
(5)
Here c
p
is the constant pressure in the heat capacity of air J / (kg K); M - compressor
efficiency, kg/s; T
1
, T
1
', T
1i
- absolute air temperature at the beginning of compression in the first,
second, i - stages of the compressor, K; T
2
, T
2'
, T
2i
- the absolute air temperature at the end of
compression in the first, second, and i stages of the compressor, K.
By reusing the heat released from the compressed air in the compressor, the overall FIK in
pneumatic devices increases and can approach the FIK of electrified drives. In this case, pneumatic
machines, while maintaining all other advantages, turn out to be less economical than electric devices.
