Primary energy savings in desiccant and evaporative cooling-assisted 100% outdoor air system combined with a fuel cell

Min Hwi Kim, Hae Won Dong, Joon Young Park, Jae Weon Jeong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The main purpose of this study involved investigating the primary energy saving potential of a liquid desiccant and evaporative cooling-assisted 100% outdoor air system (LD-IDECOAS) integrated with a proton exchange membrane fuel cell (PEMFC). During the cooling season, the heat produced by the PEMFC was used to regenerate a weak desiccant solution, and the electricity generated was used to operate the LD-IDECOAS. A pilot LD-IDECOAS powered by a PEMFC was installed and operated in an office space to experimentally verify the annual operating energy savings of the proposed system. The findings indicated that the heat reclaimed from the PEMFC saved 42% of the desiccant solution regenerating energy when compared to that in the case of a conventional gas-fired water heater. The results also suggested that the LD-IDECOAS combined with a PEMFC consumed 21% less primary energy when compared with that of a system powered by grid electricity and a conventional gas-fired water heater.

Original languageEnglish
Pages (from-to)446-456
Number of pages11
JournalApplied Energy
Volume180
DOIs
StatePublished - 2016 Oct 15

Fingerprint

Proton exchange membrane fuel cells (PEMFC)
fuel cell
Fuel cells
Energy conservation
membrane
Cooling
cooling
air
Water heaters
Air
electricity
Electricity
Gases
gas
energy
energy saving
water
liquid
Liquids
Hot Temperature

Keywords

  • 100% outdoor air system
  • Desiccant cooling
  • Evaporative cooling
  • Liquid desiccant
  • PEMFC

Cite this

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title = "Primary energy savings in desiccant and evaporative cooling-assisted 100{\%} outdoor air system combined with a fuel cell",
abstract = "The main purpose of this study involved investigating the primary energy saving potential of a liquid desiccant and evaporative cooling-assisted 100{\%} outdoor air system (LD-IDECOAS) integrated with a proton exchange membrane fuel cell (PEMFC). During the cooling season, the heat produced by the PEMFC was used to regenerate a weak desiccant solution, and the electricity generated was used to operate the LD-IDECOAS. A pilot LD-IDECOAS powered by a PEMFC was installed and operated in an office space to experimentally verify the annual operating energy savings of the proposed system. The findings indicated that the heat reclaimed from the PEMFC saved 42{\%} of the desiccant solution regenerating energy when compared to that in the case of a conventional gas-fired water heater. The results also suggested that the LD-IDECOAS combined with a PEMFC consumed 21{\%} less primary energy when compared with that of a system powered by grid electricity and a conventional gas-fired water heater.",
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Primary energy savings in desiccant and evaporative cooling-assisted 100% outdoor air system combined with a fuel cell. / Kim, Min Hwi; Dong, Hae Won; Park, Joon Young; Jeong, Jae Weon.

In: Applied Energy, Vol. 180, 15.10.2016, p. 446-456.

Research output: Contribution to journalArticle

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AU - Dong, Hae Won

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AU - Jeong, Jae Weon

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