Two-phase operation of a Terry steam turbine using air and water mixtures as working fluids

Patil, Abhay; Wang, Yintao; Solom, Matthew; Alfandi, Ashraf; Sundar, Shyam; Kirkland, Karen Vierow; Morrison, Gerald

doi:10.1016/j.applthermaleng.2019.114567

Two-phase operation of a Terry steam turbine using air and water mixtures as working fluids

Journal Article · Sat Oct 24 00:00:00 EDT 2020 · Applied Thermal Engineering

DOI:https://doi.org/10.1016/j.applthermaleng.2019.114567· OSTI ID:1607508

Patil, Abhay ^[1]; Wang, Yintao ^[1]; Solom, Matthew ^[2]; Alfandi, Ashraf ^[1]; Sundar, Shyam ^[1]; Kirkland, Karen Vierow ^[1]; Morrison, Gerald ^[1]

Texas A & M Univ., College Station, TX (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Terry steam turbines are employed in the safety systems of many nuclear Boiling Water Reactors to drive pumps and provide cooling water to the nuclear reactor core. While the turbine efficiency is low, the more important feature is high reliability under off-normal conditions. An important aspect of reliability is the ability to function with two-phase steam-water injection into the turbine, as most likely occurred in the Fukushima Dai-ichi nuclear accidents. This study investigates the characteristics of a Terry turbine during air-water injection with gas mass fractions ranging from 1 (dry gas) to 0.05 (wet gas), to better understand the Terry turbine’s true operational capabilities and provide justification for extended Terry turbine use for reactor safety. Other parameters investigated are the inlet pressure, the exhaust backpressure and the turbine’s rotational speed. The turbine performance is presented in terms of dynamometer loading and pump performance change as functions of the gas mass fraction.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE), Nuclear Reactor Technologies (NE-7)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1607508

Alternate ID(s):: OSTI ID: 1780009

Report Number(s):: SAND--2020-3457J; 684941

Journal Information:: Applied Thermal Engineering, Journal Name: Applied Thermal Engineering Journal Issue: C Vol. 165; ISSN 1359-4311

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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