Description
A set of 10 anaerobic gasification experiments was conducted on the poly(methyl methacrylate), PMMA, made available to participants in the MaCFP-2 Workshop. In each test, samples (i.e., PMMA discs of approximate dimensions: 7 cm diameter, 5.8 mm thickness) were exposed to radiant heating (nominally 50 kW m-2 across their top surface) in an anaerobic environment. Samples were insulated at their back surface and continuously heated until complete decomposition was observed. Test boundary conditions (e.g., time- and spatially-resolved measurements of incident radiant heat flux; chamber wall temperatures) were carefully characterized.Six additional tests were also conducted to measure the temperature rise of inert materials (Copper and Kaowool PM Insulation) exposed to the same conditions (i.e., Nitrogen flow rate + incident radiant heat flux) as used during tests on PMMA samples. These test results may be used to validate material thermophysical properties and boundary conditions (e.g., convection heat transfer) controlling heat transfer in this system.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Black-Copper_q50_Temp | CSV | Temperature rise of 1/8 in. black copper disc when exposed at top surface to 50 kW/m2 incident radiation and insulated at back with 1.125 in. Kaowool PM insulation board. Temperature values represent an average of 3 tests conducted in triplicate; uncertainties (Uc) represent 2 stdev_mean of Temp values recorded in triplicate tests in a +/- 1 s time window (i.e., 3 time steps averaged across 3 tests) | Open resource |
| Black-Insulation_q50_Temp | CSV | Temperature rise of 5x 1/4 in. thick Kaowool PM board insulation discs when exposed at top surface (painted with medtherm optical black coating, emissivity = 0.95) to 50 kW/m2 incident radiation. Temperature measurements are recorded at 3 locations (x, distance from top surface); each column / value represents an average of 3 tests conducted in triplicate.Uncertainties (Uc) at each location represent 2 stdev_mean of Temp values recorded at that specific location in triplicate tests in a +/- 1 s time window (i.e., 3 time steps averaged across 3 tests; 9 total values) | Open resource |
| Gasification_Apparatus_Schematic_w-sample | Schematic of gasification apparatus with highlight of sample/insulation assembly | Open resource | |
| README | Binary | Description of test goals, apparatus setup and calibration, and measurement results. | Open resource |
| MaCFP-PMMA_Gasification_q50_Mass_R3 | CSV | Measured sample mass of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R3) | Open resource |
| MaCFP-PMMA_Gasification_q50_Mass_R4 | CSV | Measured sample mass of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R4) | Open resource |
| MaCFP-PMMA_Gasification_q50_Mass_R5 | CSV | Measured sample mass of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R5) | Open resource |
| MaCFP-PMMA_Gasification_q50_Temp_R1 | CSV | Measured back surface temperature of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R1) | Open resource |
| MaCFP-PMMA_Gasification_q50_Temp_R2 | CSV | Measured back surface temperature of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R2) | Open resource |
| MaCFP-PMMA_Gasification_q50_Temp_R3 | CSV | Measured back surface temperature of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R3) | Open resource |
| MaCFP-PMMA_Gasification_q50_Temp_R4 | CSV | Measured back surface temperature of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R4) | Open resource |
| MaCFP-PMMA_Gasification_q50_Temp_R5 | CSV | Measured back surface temperature of MaCFP-PMMA during anaerobic pyrolysis when exposed to 50 kW/m2 of external radiant heating (test repetition R5) | Open resource |
| PMMA Mass vs time (q50) | Time-resolved measurements of PMMA Mass when exposed to an incident radiant heat flux of 50 kW m-2. | Open resource | |
| PMMA MLR vs time (q50) | Time-resolved measurements of PMMA Mass Loss Rate when exposed to an incident radiant heat flux of 50 kW m-2. | Open resource | |
| PMMA Temperature vs. time (q 50) | Time-resolved measurements of PMMA back surface temperature when exposed to an incident radiant heat flux of 50 kW m-2. | Open resource | |
| Measured steady state heat flux profile across the sample's surface for tests conducted at 50 kW m-2 | contourf plot of heat flux distribution across sample's surface at steady state (target flux = 50 kW m-2) | Open resource | |
| Time-averaged, normalized incident heat flux (i.e., q*=q"/q"{240s-300s}) at r = 0, 2.5, 5.0 and 7.1 cm (21 locations) | normalized (q*=q"/q"steady) time-response of gasification apparatus heat flux across the sample's surface | Open resource | |
| Anaerobic gasification of poly(methyl methacrylate) under external thermal radiation | Unknown | Anaerobic gasification of poly(methyl methacrylate) under external thermal radiation in the NIST Gasification Apparatus. Measurement data includes back surface temperature and sample mass loss rate of ~5.8mm thick, 7cm diameter PMMA discs | Open resource |