dc.contributor.author |
P, Senthilkumar
|
es_ES |
dc.contributor.author |
Bakshi, Shamit
|
es_ES |
dc.contributor.author |
T.N.C, Anand
|
es_ES |
dc.date.accessioned |
2018-04-12T11:32:07Z |
|
dc.date.available |
2018-04-12T11:32:07Z |
|
dc.date.issued |
2017-07-28 |
|
dc.identifier.isbn |
9788490485804 |
|
dc.identifier.uri |
http://hdl.handle.net/10251/100303 |
|
dc.description.abstract |
[EN] Selective Catalytic Reduction (SCR) using Urea-Water Solution (UWS) as an ammonia precursor is considered
as one of the best choices to meet the current stringent emission norms for reduction of NOX in diesel engines.
UWS sprayed in the engine exhaust line forms ammonia, and this ammonia reduces NOX into nitrogen. The NOX
reduction efficiency depends on the mixing and evaporation behavior of the UWS spray in the hot exhaust gas.
Spray characteristics decide the evaporation rate and hence the NOX reduction efficiency. The spray structure is
closely related to the breakup point and breakup mode of the jet. Hence, in this study, breakup length and
breakup mode were investigated by injecting UWS (32.5 % by weight) through a nozzle in a hot air cross flow. A
CCD camera and pulsed Nd:Yag laser were used for capturing the images. Experiments were conducted with
varying nozzle size (150, 250 and 400 micron), injection pressure (0.5 to 3 bar), temperature (32 °C,150 °C and
200 °C) and air flow rate. The effect of operating parameters (nozzle size, injection pressure, air temperature and
velocity) in terms of dimensionless numbers (Weber number and momentum flux ratio) on jet breakup mode and
jet breakup length was studied. It was observed that the breakup length for UWS was close to that of water. The
jet breakup length increases with momentum flux ratio since a jet having a higher momentum is able to penetrate
a larger distance in the cross flow. Increasing the air temperature increases the velocity of the cross flow and
hence reduces the breakup length. A correlation for jet breakup length was developed. The effect of inclusion of
Weber number in the breakup length correlation, in addition to the momentum flux ratio, was studied. Visual
observation shows that droplet sizes obtained from the plain orifice injector without preheating is large. Preheating
the UWS before injection is recommended to reduce the droplet size. |
es_ES |
dc.format.extent |
8 |
es_ES |
dc.language |
Inglés |
es_ES |
dc.publisher |
Editorial Universitat Politècnica de València |
es_ES |
dc.relation.ispartof |
Ilass Europe. 28th european conference on Liquid Atomization and Spray Systems |
es_ES |
dc.rights |
Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) |
es_ES |
dc.subject |
UWS |
es_ES |
dc.subject |
Cross flow |
es_ES |
dc.subject |
Breakup length and laser diagnostics |
es_ES |
dc.title |
Breakup length on Urea Water Solution jet in hot cross flow |
es_ES |
dc.type |
Capítulo de libro |
es_ES |
dc.type |
Comunicación en congreso |
es_ES |
dc.identifier.doi |
10.4995/ILASS2017.2017.4982 |
|
dc.rights.accessRights |
Abierto |
es_ES |
dc.description.bibliographicCitation |
P, S.; Bakshi, S.; T.n.c, A. (2017). Breakup length on Urea Water Solution jet in hot cross flow. En Ilass Europe. 28th european conference on Liquid Atomization and Spray Systems. Editorial Universitat Politècnica de València. 838-845. https://doi.org/10.4995/ILASS2017.2017.4982 |
es_ES |
dc.description.accrualMethod |
OCS |
es_ES |
dc.relation.conferencename |
ILASS2017 - 28th European Conference on Liquid Atomization and Spray Systems |
es_ES |
dc.relation.conferencedate |
September 06-08,2017 |
es_ES |
dc.relation.conferenceplace |
Valencia, Spain |
es_ES |
dc.relation.publisherversion |
http://ocs.editorial.upv.es/index.php/ILASS/ILASS2017/paper/view/4982 |
es_ES |
dc.description.upvformatpinicio |
838 |
es_ES |
dc.description.upvformatpfin |
845 |
es_ES |
dc.type.version |
info:eu-repo/semantics/publishedVersion |
es_ES |
dc.relation.pasarela |
OCS\4982 |
es_ES |