Porous Media Reactor Temperature Data

dc.contributor.other Chan, Shaun en_US 2021-11-26T10:42:04Z 2021-11-26T10:42:04Z 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.language English
dc.language.iso EN en_US
dc.rights CC-BY
dc.rights.uri 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.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.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 School of Mechanical and Manufacturing Engineering School of Mechanical and Manufacturing Engineering School of Photovoltaic and Renewable Energy Engineering 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
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Reactors Data Summary.xlsx
648.66 KB
Resource type