Development of evaporation equipment for reforming by spray flow

Koichi Hishida, Kiyoshi Arai

Research output: Contribution to journalArticle

Abstract

An experimental study was conducted in order to establish the thermal and fluid design criteria for a new steam reforming device, and a proposal was submitted to employ a flow laden with droplets (water and methanol mixture solution) directly impinging on a heated plate in the new reforming device. Experiments have been conducted by controlling spray impingement on a heated plate covered with a porous plate made by sintered metal. The new configuration of the reforming device is able to enhance the evaporation of liquid by using a low-level heat source held at lower than 600 K. Droplets atomized by a spray nozzle instantaneously evaporate on the heating surface without bouncing, since the sintered metal surface provides a higher Leidenfrost temperature due to surface roughness. The characteristics of spray flow and evaporation efficiency have been measured by Phase Doppler Anemometer which permits local measurements of size and velocity of liquid droplets, size distribution and mass flux of droplet. Results have confirmed that superheated gas was directly generated from the spray liquid with high efficiency, and the locations of heating plates and spray- nozzle were optimized. Finally the rate of evaporation was enhanced by pre-heating the liquid before atomization.

Original languageEnglish
Pages (from-to)2174-2181
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume64
Issue number623
Publication statusPublished - 1998 Jul
Externally publishedYes

Fingerprint

Reforming reactions
spray nozzles
sprayers
Evaporation
evaporation
Spray nozzles
heating
liquid atomization
Liquids
liquids
Heating
porous plates
anemometers
impingement
heat sources
Porous plates
steam
metal surfaces
proposals
Steam reforming

Keywords

  • Enhancement of evaporation
  • Spray
  • Steam reforming
  • Utilization of waste heat

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Development of evaporation equipment for reforming by spray flow. / Hishida, Koichi; Arai, Kiyoshi.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 64, No. 623, 07.1998, p. 2174-2181.

Research output: Contribution to journalArticle

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