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Evaluation of Heat Recovery Steam Generator for Gas/Steam Combined Cycle Power Plants

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Book cover Advances in Fluid and Thermal Engineering

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

Abstract

The combined cycle power plant consists of topping cycle, bottoming cycles and heat recovery steam generators (HRSGs) as the integral systems. The main focus of this work is to predict and analyse fluid flow behaviour in HRSG. The heat transfer and pressure drop analysis are performed by using computational fluid dynamics (CFD) model. The CFD model capability for predicting heat transfer and pressure drop performance of finned tube in cross-flow is analysed. The HRSGs having serrated tube and steady-state approach, with a two-equation turbulence model, is employed to examine fluid flow having Reynolds numbers variation from 5000 to 30,000. The external flow Nusselt number and overall pressure drop predicted by the CFD model are compared with those predicted by published empirical correlations.

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Abbreviations

A :

Area (m2)

CFD 27:

CFD model results for 27 fins

CFD 30:

CFD model results for 30 fins

d f :

Outer diameter of the fin (m)

d i :

Inner diameter of the fin (m)

d o :

Outer diameter of the tube (m)

G max :

Average mass flux at the minimum flow cross-sectional area within the tube bundle (kg/sm2)

h :

Specific enthalpy (J/kg)

h f :

Total fin height (m)

h total :

Total specific enthalpy (J/kg)

k :

Specific kinetic turbulent energy (m2/s2)

L :

Total length of the tube (m)

p :

Pressure in (Pa)

Pr :

Prandtl number

Pr t :

Turbulent Prandtl number

Re :

Reynolds number

t :

Time (s)

T :

Temperature (K, °C)

T + :

Dimensionless temperature

t f :

Fin thickness

t w :

Tube wall thickness (m)

U :

Overall heat transfer coefficient (W/m2K)

ɛ :

Rate of dissipation of turbulent kinetic energy (m2/s3)

ɛ H :

Thermal eddy diffusivity (m2/s)

λ :

Thermal conductivity (W/mK)

µ :

Dynamic viscosity

µ t :

Turbulent viscosity

ρ :

Fluid density (kg/m3)

τ ij :

Viscous shear stress tensor (Pa)

a o :

Outside tube surface area available per unit length (m2/m)

A o :

Total outside tube surface area available per unit length (m2/m)

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Author information

Authors and Affiliations

  1. ASET, Amity University Uttar Pradesh, Noida, India

    Achintya Sharma, Meeta Sharma, Anoop Kumar Shukla & Nitin Negi

Authors
  1. Achintya Sharma
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  2. Meeta Sharma
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  3. Anoop Kumar Shukla
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  4. Nitin Negi
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Corresponding author

Correspondence to Achintya Sharma .

Editor information

Editors and Affiliations

  1. Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA

    Pankaj Saha

  2. Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, Delhi, India

    P.M.V. Subbarao

  3. Department of Mechanical Engineering, Amity School of Engineering and Technology, Amity University Uttar Pradesh, NOIDA, Uttar Pradesh, India

    Basant Singh Sikarwar

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Sharma, A., Sharma, M., Shukla, A.K., Negi, N. (2019). Evaluation of Heat Recovery Steam Generator for Gas/Steam Combined Cycle Power Plants. In: Saha, P., Subbarao, P., Sikarwar, B. (eds) Advances in Fluid and Thermal Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-6416-7_18

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  • DOI: https://doi.org/10.1007/978-981-13-6416-7_18

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-6415-0

  • Online ISBN: 978-981-13-6416-7

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