Dataset:
Porous Media Reactor Temperature Data
Porous Media Reactor Temperature Data
| dc.contributor.other | Chan, Shaun | en_US |
| dc.date.accessioned | 2021-11-26T10:42:04Z | |
| dc.date.available | 2021-11-26T10:42:04Z | |
| dc.date.issued | 2018 | en_US |
| dc.description.abstract | Temperature recordings collected from the porous media reactor using S-type and K-type thermocouples and the SignalExpress Software | en_US |
| dc.identifier.uri | http://hdl.handle.net/1959.4/resource/collection/resdatac_592/1 | |
| dc.language | English | |
| dc.language.iso | EN | en_US |
| dc.rights | CC-BY | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
| dc.subject.other | Porous Media Combustion | en_US |
| dc.subject.other | Thermophotovoltaics | en_US |
| dc.title | Porous Media Reactor Temperature Data | en_US |
| dc.type | Dataset | en_US |
| dcterms.accessRights | open access | |
| dcterms.accrualMethod | In order to initiate the reactor, the following procedure based on Bubnovich et al. [1] and Mathis and Ellzey [2] was used. Note that the units of nlpm (normal litres per minute) were adopted in this study and that all the experiments were carried out using 273.15 K and 1 atm as the reference temperature and pressure. First, the water tap for the water-cooling system was opened. After that, the mass flow controllers were set for a volumetric flow rate of 9.48 nlpm (500 kW/m2) for stoichiometric combustion. Once the flows were stabilized the reactor was ignited from the top. After the first type S thermocouple (A) reached its peak temperature (this condition is detected on SignalExpress when the temperature begins to decrease), the equivalence ratio was set to 0.7 and the firing rate was adjusted to the desired value by changing the flow rates using the mass flow controllers. After a few minutes the flame usually moved upstream. Once the flame reached the interface zone (i.e. maximum temperature between thermocouple B and C), a stabilizing period of 20 minutes was required for flame stabilization. If within that period of time the flame moved upstream, a flashback event was recorded. If a stabilized flame was found, then the firing rate was reduced by 100 kW/m2 each time, until flashback was found. Then, the firing rate was increased back to starting value and wait for steady state conditions and rise the firing rate by 100 kW/m2 and wait for steady state conditions. This was repeated until the blow off limit was found. If the firing rate was too high that compromises some hazard, such as breaking the quartz due to high temperature the reactor was shut down and no blow-off limit is found. Once all the test cases have been recorded, the air gas ball valve was closed first to avoid flashback. Next, the fuel valve was closed immediately after. After this, the cooling water was continued for an additional 15 minutes as part of the cool down protocol. [1] V. Bubnovich, M. Toledo, L. Henríquez, C. Rosas, and J. Romero, “Flame stabilization between two beds of alumina balls in a porous burner,” Appl. Therm. Eng., vol. 30, no. 2–3, pp. 92–95, Feb. 2010. [2] W. M. Mathis and J. L. Ellzey, “Flame stabilization, operating range, and emissions for a methane/air porous burner,” Combust. Sci. Technol., vol. 175, no. 5, pp. 825–839, May 2003. | en_US |
| dcterms.rightsHolder | Copyright 2018, Philippe Andre Gentillon Molina | en_US |
| dspace.entity.type | Dataset | en_US |
| unsw.accessRights.uri | https://purl.org/coar/access_right/c_abf2 | |
| unsw.contributor.leadChiefInvestigator | Gentillon Molina, Philippe | en_US |
| unsw.contributor.leadChiefInvestigator | Taylor, Robert | en_US |
| unsw.contributor.researchDataCreator | Southcott, Jake | en_US |
| unsw.description.storageplace | School of Photovoltaic and Renewable Energy Engineering, Faculty of Engineering, UNSW | en_US |
| unsw.identifier.doi | https://doi.org/10.26190/unsworks/1416 | |
| unsw.isDatasetRelatingToDataset | Porous media combustion-based thermophotovoltaic (PMC-TPV) reactor experiment | |
| unsw.relation.OriginalPublicationAffiliation | Gentillon Molina, Philippe, PV & Renewable Energy Eng, Engineering, | en_US |
| unsw.relation.OriginalPublicationAffiliation | Southcott, Jake, Mech & Manufacturing Engineer, Faculty of Engineering, | en_US |
| unsw.relation.OriginalPublicationAffiliation | Chan, Shaun, Mech & Manufacturing Eng, Engineering, | en_US |
| unsw.relation.OriginalPublicationAffiliation | Taylor, Robert, Mech & Manufacturing Eng, Engineering, | en_US |
| unsw.relation.faculty | Engineering | |
| unsw.relation.fundingScheme | School research fund | en_US |
| unsw.relation.projectDesc | Porous media combustion (PMC) is characterized by intense heat exchange from the combustion gases to the solid media, enabling higher temperatures at the outer surface of the solid matrix. This research, for the first time, experimentally investigates how to control combustion inside a porous media matrix to take advantage of its hot outer surface for active emission to a thermophotovoltaic (TPV) system. This ‘coupled porous media combustion-based thermophotovoltaic (PMC-TPV) system’ requires a stable flame over (only) the narrow height where the photovoltaics are mounted. Thus, this study reports a systematic flame stability analysis for lean Air/CH4 mixtures to optimize the radiant performance of 3 different porous media combustor designs for thermophotovoltaic applications. In this study, the equivalence ratio was set at 0.7 and the firing rates were varied in order to find the stable and unstable regimes of each reactor. Results indicate that the use of a radiant reflector shifts the stable flame regimes and increases the radiant efficiency to 63% at an operating temperature of 1,356 °C. It was also found that superadiabatic conditions were possible in this system, with a maximum temperature of 1538 °C. These fundamental combustion findings will help to define the operating parameters and improve the electrical conversion efficiency in future PMC-TPV systems. | en_US |
| unsw.relation.projectEndDate | 2017-12-31 | en_US |
| unsw.relation.projectStartDate | 2017-03-01 | en_US |
| unsw.relation.projectTitle | Stable flame limits for optimal radiant performance of porous media reactors for thermophotovoltaic applications using packed beds of alumina | en_US |
| unsw.relation.school | School of Mechanical and Manufacturing Engineering | |
| unsw.relation.school | School of Mechanical and Manufacturing Engineering | |
| unsw.relation.school | School of Photovoltaic and Renewable Energy Engineering | |
| unsw.relation.school | School of Mechanical and Manufacturing Engineering | |
| unsw.subject.SEOcode | 859999 Energy not elsewhere classified | en_US |
| unsw.subject.fieldofresearchcode | 091305 Energy Generation, Conversion and Storage Engineering | en_US |
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