Design and performance analysis of a hydrogen liquefaction process

  • What is the economics of hydrogen liqtion?

    Economics: hydrogen liqtion is an energy-intensive process.
    Current processes have specific energy consumptions (SEC\xb6) of between (11.9 and 15) kWh kgLH2−1 which is (35 to 45)% of the lower heating value of hydrogen..

  • What is the efficiency of hydrogen liqtion?

    FUELS – HYDROGEN STORAGE Liquid
    Current hydrogen liqtion plants operate with a relatively modest thermodynamic energy efficiency of 30 to 35%..

  • What is the efficiency of hydrogen liquefier?

    FUELS – HYDROGEN STORAGE Liquid
    Current hydrogen liqtion plants operate with a relatively modest thermodynamic energy efficiency of 30 to 35%..

  • What is the process of liqtion of hydrogen?

    Liqtion.
    Gaseous hydrogen is liquefied by cooling it to below −253\xb.

    1. C (−423\xb
    2. F).
      3. Once hydrogen is liquefied it can be stored at the liqtion plant in large insulated tanks.

  • The pressure required to reach this point is called the critical pressure which, for hydrogen, is 1.239 MPa=179.7 psi.
    Hence, while you can't change hydrogen into a liquid at room temperature, you can change it into a (supercritical) fluid.
Apr 2, 2021The performance of the hydrogen liquefaction process can be evaluated based on its the coefficient of performance (COP), specific energy 

Performance Evaluation of The System

The hydrogen liquefaction process shown in Fig. 2 is simulated based on Aspen HYSYS software and following assumptions (Ghorbani et al

Energy Analysis

In the analysis of the system, the mass, energy and exergy balance should be considered (Seyam et al. 2020)

Exergy Analysis

Exergy of a system is the maximum effective work it demands or provides to reach the standard state

Sensitivity Analysis

Sensitivity analysis is a practical tool for analyzing the fluctuations of performance caused by the variation of independent variables

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