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Experimentally validated modeling of a turbo-compression cooling system for power plant waste heat recovery

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  • Garland, Shane D.
  • Noall, Jeff
  • Bandhauer, Todd M.

Abstract

Waste heat recovery systems utilize exhaust heat from power generation systems to produce mechanical work, provide cooling, or create high temperature thermal energy. One system that provides a cooling effect is the turbo-compression cooling system, which operates by using low-grade waste heat to vaporize a fluid and spin a turbine in a recuperative Rankine cycle. The turbine power is used to directly drive a compressor in a traditional vapor-compression cycle. This study presents a theoretical modeling approach that uses compressor and turbine efficiency maps and a heat exchanger UA scaling methodology to make performance predictions over a range of ambient temperatures and cooling loads. The results of experimental testing for a 250 kWth TCCS showed good correlation (maximum error of 2.0%) for power and cooling cycle mass flow ranges of 0.35 kg s−1–0.5 kg s−1 and 0.65–0.85 kg s−1, respectively. The validated modeling approach was used to predict system performance for a Natural Gas Combined Cycle power plant application.

Suggested Citation

  • Garland, Shane D. & Noall, Jeff & Bandhauer, Todd M., 2018. "Experimentally validated modeling of a turbo-compression cooling system for power plant waste heat recovery," Energy, Elsevier, vol. 156(C), pages 32-44.
    • Handle: RePEc:eee:energy:v:156:y:2018:i:c:p:32-44
    DOI: 10.1016/j.energy.2018.05.048
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    Cited by:

    1. Zhou, Xia & Fang, Song & Zhang, Hanwei & Xu, Zhuoren & Jiang, Hanying & Rong, Yangyiming & Wang, Kai & Zhi, Xiaoqin & Qiu, Limin, 2023. "Dynamic characteristics of a mechanically coupled organic Rankine-vapor compression system for heat-driven cooling," Energy, Elsevier, vol. 280(C).
    2. Alshammari, Saif & Kadam, Sambhaji T. & Yu, Zhibin, 2023. "Assessment of single rotor expander-compressor device in combined organic Rankine cycle (ORC) and vapor compression refrigeration cycle (VCR)," Energy, Elsevier, vol. 282(C).
    3. Grauberger, Alex & Young, Derek & Bandhauer, Todd, 2022. "Experimental validation of an organic rankine-vapor compression cooling cycle using low GWP refrigerant R1234ze(E)," Applied Energy, Elsevier, vol. 307(C).
    4. Grauberger, Alex & Young, Derek & Bandhauer, Todd, 2022. "Off-design performance of an organic Rankine-vapor compression cooling cycle using R1234ze(E)," Applied Energy, Elsevier, vol. 321(C).

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