Evaluation of Thermodynamic Properties of Helium using Cubic Equation of State based Approach for Energy Industry Applications

Rupsha Bhattacharyya

International journal of Thermodynamics and Chemical Kinetics

Evaluation of Thermodynamic Properties of Helium using Cubic Equation of State based Approach for Energy Industry Applications

Rupsha Bhattacharyya

Abstract

Equations of state based methods are important techniques for thermodynamic property prediction ofcompounds and mixtures. The Peng-Robinson cubic equation of state is one of the most well-knownformulations for gases and gas mixtures used in the process and energy industries. In this study, it isused to predict pertinent thermodynamic state variables of helium gas for its use in very hightemperature as well as extremely low temperature thermodynamic cycle application for powergeneration and cryogenics applications respectively. The departure functions are calculated first.This accounts for the deviation from ideal gas behaviour likely to be exhibited by helium gas underthese process conditions when calculating its properties like enthalpy and entropy. In-house codes forthese thermodynamic calculations are developed and the results are compared with reported propertyvalues. Good agreement is obtained between the two. Real gas properties should be used to estimatepower consumption and work output in turbo-machinery such as gas compressors and gas turbines,particularly when high-pressure conditions are involved. This is illustrated through a case studyinvolving gas compressor selection for high-temperature nuclear reactor cooling. The compressionenergy requirement, as well as the inter-cooling requirement, is estimated and parametric studies areperformed.

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How to cite

Rupsha Bhattacharyya. Evaluation of Thermodynamic Properties of Helium using Cubic Equation of State based Approach for Energy Industry Applications. International journal of Thermodynamics and Chemical Kinetics. 2021;7(1):1–9.

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Evaluation of Thermodynamic Properties of Helium using Cubic Equation of State based Approach for Energy Industry Applications

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