How much energy is consumed in reality in steam compression?

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SUMMARY

The energy consumption of real steam compressors operating at 1 kg/sec from 2.56 kPa to 1 bar is significantly higher than the theoretical value of 141 kW, which assumes 100% efficiency. In practical applications, steam is condensed to water condensate before being pumped to the required pressure, which alters the energy dynamics. The discussion emphasizes the need for clarity on actual energy usage rather than theoretical calculations, particularly in the context of steam compression systems.

PREREQUISITES
  • Understanding of steam compression principles
  • Familiarity with thermodynamic cycles, particularly the Rankine cycle
  • Knowledge of energy efficiency metrics in industrial applications
  • Basic concepts of fluid dynamics related to compressible gases
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  • Research real-world energy consumption metrics for steam compressors
  • Explore the differences between theoretical and actual performance in steam systems
  • Investigate energy efficiency improvements in steam compression technology
  • Learn about the energy requirements for pumping water condensate in steam systems
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Engineers, energy analysts, and professionals involved in steam system design and optimization will benefit from this discussion, particularly those focused on energy consumption and efficiency in steam compression processes.

pranj5
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I want to know how much energy REAL steam compressors consume in compressing steam @ 1 kg/sec from 2.56 kPa to 1 bar. Theoretically (with `100% efficiency) it's 141 kW for making 1 kg/sec steam flow assuming that the temperature doesn't decrease due to loss of heat as latent heat of vaporization.
Can anybody help me?
 
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In reality, in a Rankine cycle, steam isn't compressed due to the fact that it requires quite a lot of energy to "pump" a compressible gas such as steam to a higher pressure. In reality, the steam is condensed to water condensate which is subsequently pumped up to the boilers working pressure. The energy required to do this is usually negligible.

I know that doesn't answer your question but I just wanted to clear up any possible misunderstanding.
 
I don't want to know about Rankine Cycle. Steam compressors are available in reality. I just want to know much energy a REAL steam compressor consumes during the compression operation as I have mentioned in my query. Theoretically it's 141 kW for making 1 kg/sec steam flow (with 100% efficiency).
 

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