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 language | English |
|---|---|
| Pages (from-to) | 2174-2181 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |
| Volume | 64 |
| Issue number | 623 |
| Publication status | Published - 1998 Jul |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Development of evaporation equipment for reforming by spray flow
AU - Hishida, Koichi
AU - Arai, Kiyoshi
PY - 1998/7
Y1 - 1998/7
N2 - 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.
AB - 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.
KW - Enhancement of evaporation
KW - Spray
KW - Steam reforming
KW - Utilization of waste heat
UR - http://www.scopus.com/inward/record.url?scp=71249151247&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=71249151247&partnerID=8YFLogxK
M3 - Article
VL - 64
SP - 2174
EP - 2181
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 623
ER -