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Waste heat and electrically driven hybrid cooling systems for a high ambient temperature, off-grid application

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  • Horvath, Christopher
  • Hwang, Yunho
  • Radermacher, Reinhard
  • Gerstler, William
  • Tang, Ching-Jen

Abstract

Forward army bases at high ambient temperature off-grid locations require both power and cooling capacity to function properly. Due to the inefficient existing configuration to meet these demands, there are safety and stability issues as each liter of fuel consumed for electrical power must first pass through a complex, hostile network. In place of the conventional configuration composed of a Genset (electrical generator set) and an electrically powered VCS (vapor compression system), utilizing a smaller Genset with a waste heat driven LiBr/H2O (lithium bromide/water) AS (absorption system) provides a more efficient CHP (combined heat and power) configuration. With design criteria of ambient temperatures up to 51.7 °C, providing up to 3 kW of non-cooling electricity, and 5.3 kW of cooling, these two configurations were simulated in both steady-state and transient conditions. Additionally, the proposed AS's avoid crystallization and have air-cooled heat exchangers unlike conventional AS's which crystallize at high ambient temperatures and have bulky cooling towers. In the transient simulation for the hottest week, results showed a fuel savings of 34–37% with the CHP configuration.

Suggested Citation

  • Horvath, Christopher & Hwang, Yunho & Radermacher, Reinhard & Gerstler, William & Tang, Ching-Jen, 2014. "Waste heat and electrically driven hybrid cooling systems for a high ambient temperature, off-grid application," Energy, Elsevier, vol. 66(C), pages 711-721.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:711-721
    DOI: 10.1016/j.energy.2013.11.058
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    References listed on IDEAS

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    Cited by:

    1. Cao, Tao & Lee, Hoseong & Hwang, Yunho & Radermacher, Reinhard & Chun, Ho-Hwan, 2016. "Modeling of waste heat powered energy system for container ships," Energy, Elsevier, vol. 106(C), pages 408-421.
    2. Ulloa, Carlos & Nuñez, José M. & Lin, Chengxian & Rey, Guillermo, 2018. "AHP-based design method of a lightweight, portable and flexible air-based PV-T module for UAV shelter hangars," Renewable Energy, Elsevier, vol. 123(C), pages 767-780.
    3. Guillermo Rey & Carlos Ulloa & José Luís Míguez & Antón Cacabelos, 2016. "Suitability Assessment of an ICE-Based Micro-CCHP Unit in Different Spanish Climatic Zones: Application of an Experimental Model in Transient Simulation," Energies, MDPI, vol. 9(11), pages 1-13, November.

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