Talk:Furnace temperature and pressure math - Revision history

Wark at 10:27, 17 October 2021

2021-10-17T10:27:19Z

← Older revision		Revision as of 10:27, 17 October 2021
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	#The obtained value was 4.99999 J per ignite.		#The obtained value was 4.99999 J per ignite.
	#The experiment was repeated with a larger amount of N2. The obtained value was 5.0126 J per ignite.		#The experiment was repeated with a larger amount of N2. The obtained value was 5.0126 J per ignite.

			===Measuring R in PV=nRT just to see what happens===
			#A MIPS program was prepared to calculate and display R=(PV)/(nT)
			*50.00kPa gave R = 8.31439978
			*38.89kPa gave R = 8.31440004
			*15.12kPa gave R = 8.31439978
			*10.64kPa gave R = 8.31440002
			*10.44kPa gave R = 8.31439940
			The value fluctuates in the 8th digit. This is espcially easy to see by inserting/releasing gas slowly and watching the value change. There is a precision error here, maybe a result of a rounding error in the game. Since it appears random, it can't explain the error in the released energy above, since that one has a trend.

Wark at 09:54, 17 October 2021

2021-10-17T09:54:22Z

← Older revision		Revision as of 09:54, 17 October 2021
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	***diluted with some warm N2 (37% mol N2) gave 563 452.120		***diluted with some warm N2 (37% mol N2) gave 563 452.120
	**506.00kPa (perfect fuel) gave 563 451.456		**506.00kPa (perfect fuel) gave 563 451.456
	*The trend is: less fuel gives a higher released energy value. Increasing the pressure with inert gases also increases the released energy slightly.		*The trend is: less fuel gives a higher released energy value (this fits with the idea of the 5 J from ignition behind behind this). Increasing the pressure with inert gases also increases the released energy slightly (this contradicts the idea that the 5 J added from ignition is behind this).

	===Spark energy experiment===		===Spark energy experiment===

Wark at 09:47, 17 October 2021

2021-10-17T09:47:49Z

← Older revision		Revision as of 09:47, 17 October 2021
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	</div>		</div>

			*Some mesurements
			**10.65kPa (perfect fuel) gave 563 454.676
			***diluted with O2/N2 to 130.91kPa gave 563 454.729
			**50kPa (perfect 1:2 fuel) gave 563 452.094
			***diluted with some warm N2 (37% mol N2) gave 563 452.120
			**506.00kPa (perfect fuel) gave 563 451.456
			*The trend is: less fuel gives a higher released energy value. Increasing the pressure with inert gases also increases the released energy slightly.

	===Spark energy experiment===		===Spark energy experiment===

Wark at 22:06, 16 October 2021

2021-10-16T22:06:01Z

← Older revision		Revision as of 22:06, 16 October 2021
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	===Improved experiment===		===Improved experiment===
	#An advanced furnace with two connected LED consoles and an IC housing to accurately track the data was prepared. A MIPS program was written to calculate and display the released energy. The script runs only once, immediately after being inserted into its housing, and it will ignite the furnace automatically. Both the 95% combustion efficiency value and the full 100% combustion efficiency value are displayed. The 5 J added by the ignite is not subtracted.		#An advanced furnace with two connected LED consoles and an IC housing to accurately track the data was prepared. A MIPS program was written to calculate and display the released energy. The script runs only once, immediately after being inserted into its housing, and it will ignite the furnace automatically. Both the 95% combustion efficiency value and the full 100% combustion efficiency value are displayed. The 5 J added by the ignite is not subtracted. Different starting pressure gives slightly different values (in the 6th digit) for the released energy are obtained.

	<div class="mw-collapsible mw-collapsed" data-expandtext="{{int:EXPAND - a MIPS script for calculating the energy released from 1 mol O2 + 2 mol H2 combusting}}" data-collapsetext="{{int:COLLAPSE - a MIPS script for calculating the energy released from 1 mol O2 + 2 mol H2 combusting}}">		<div class="mw-collapsible mw-collapsed" data-expandtext="{{int:EXPAND - a MIPS script for calculating the energy released from 1 mol O2 + 2 mol H2 combusting}}" data-collapsetext="{{int:COLLAPSE - a MIPS script for calculating the energy released from 1 mol O2 + 2 mol H2 combusting}}">
	<pre>		<pre>

Wark at 21:58, 16 October 2021

2021-10-16T21:58:38Z

@@ Line 11: / Line 11: @@
 ===Improved experiment===
-#An advanced furnace with connected LED consoles to accurately track temperature and pressure was prepared, a MIPS program was written to calculate the released energy
+#An advanced furnace with two connected LED consoles and an IC housing to accurately track the data was prepared. A MIPS program was written to calculate and display the released energy. The script runs only once, immediately after being inserted into its housing, and it will ignite the furnace automatically. Both the 95% combustion efficiency value and the full 100% combustion efficiency value are displayed. The 5 J added by the ignite is not subtracted.
 ===Spark energy experiment===

Wark at 21:36, 16 October 2021

2021-10-16T21:36:37Z

← Older revision		Revision as of 21:36, 16 October 2021
Line 11:		Line 11:

	===Improved experiment===		===Improved experiment===
	#An advanced furnace with connected LED consoles to accurately track temperature and pressure was prepared, a MIPS program was written to ~~show practical and theoretical values~~		#An advanced furnace with connected LED consoles to accurately track temperature and pressure was prepared, a MIPS program was written to calculate the released energy
	#the ~~furnace was loaded with fuel and the game saved~~
	~~#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy~~
	~~#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier~~
	~~#eventually there is a precision error when different amounts of gas are inside of the furnace, it's assumed that this error comes from the energy added by the ignition spark~~
	~~#some test results (these predictions use 593120.4978 J as the value for the energy~~ released ~~per 1 mol O2 and 2 mol H2 that combusts)~~
	*12.55kPa fuel in furnace (33.3335906% oxygen)
	**predicted temp: 2475.82064K
	**actual temp: 2475.82959K (slightly higher)
	*518.77kPa fuel in furnace (33.3335906% oxygen)
	**predicted temp: 2475.820748K
	**actual temp: 2475.818359K (slightly lower)
	*The error is assumed to be the energy from the spark. This is because the chemical energy released is per mol, but the spark is a flat value, so the spark should give a decreasing effect as the number of moles inside the furnace increases. While it is possible to account for this by tracking the TotalMoles value from the furnace, the error is so tiny that the extra calculations required just doesn't seem worth doing.

	===Spark energy experiment===		===Spark energy experiment===
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	#Ignite was pressed 2 times, each time the new Temperature was recorded, the increase was the same		#Ignite was pressed 2 times, each time the new Temperature was recorded, the increase was the same
	#The energy added per ignite was calculated as: EnergyChange = moles * specificHeat * TemperatureChange		#The energy added per ignite was calculated as: EnergyChange = moles * specificHeat * TemperatureChange
	#The obtained value was 4.99999 J ~~for each button press~~		#The obtained value was 4.99999 J per ignite.
			#The experiment was repeated with a larger amount of N2. The obtained value was 5.0126 J per ignite.

Wark at 09:16, 16 October 2021

2021-10-16T09:16:37Z

← Older revision		Revision as of 09:16, 16 October 2021
Line 29:		Line 29:
	#Ignite was pressed 2 times, each time the new Temperature was recorded, the increase was the same		#Ignite was pressed 2 times, each time the new Temperature was recorded, the increase was the same
	#The energy added per ignite was calculated as: EnergyChange = moles * specificHeat * TemperatureChange		#The energy added per ignite was calculated as: EnergyChange = moles * specificHeat * TemperatureChange
	#The obtained value was 0.~~499999~~ J for each button press		#The obtained value was 4.99999 J for each button press

Wark at 09:03, 16 October 2021

2021-10-16T09:03:20Z

← Older revision		Revision as of 09:03, 16 October 2021
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	#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy		#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy
	#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier		#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier
			#eventually there is a precision error when different amounts of gas are inside of the furnace, it's assumed that this error comes from the energy added by the ignition spark
			#some test results (these predictions use 593120.4978 J as the value for the energy released per 1 mol O2 and 2 mol H2 that combusts)
			*12.55kPa fuel in furnace (33.3335906% oxygen)
			**predicted temp: 2475.82064K
			**actual temp: 2475.82959K (slightly higher)
			*518.77kPa fuel in furnace (33.3335906% oxygen)
			**predicted temp: 2475.820748K
			**actual temp: 2475.818359K (slightly lower)
			*The error is assumed to be the energy from the spark. This is because the chemical energy released is per mol, but the spark is a flat value, so the spark should give a decreasing effect as the number of moles inside the furnace increases. While it is possible to account for this by tracking the TotalMoles value from the furnace, the error is so tiny that the extra calculations required just doesn't seem worth doing.

	===Spark energy experiment===		===Spark energy experiment===

Wark at 22:25, 15 October 2021

2021-10-15T22:25:04Z

← Older revision		Revision as of 22:25, 15 October 2021
Line 15:		Line 15:
	#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy		#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy
	#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier		#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier
	~~#it was noticed that pressing ignite added a small bit of energy to the furnace, this value was found to be 5 J by a different experiment and subtracted from this result~~
	~~#The energy added for combustion (50KPa perfect 2:1 fuel at 4.1°C) was measured to be 563 464.4729 J~~
	~~#removing the 5 J from the spark gives 563 459.4729 J~~
	~~#dividing by 0.95 to get the energy released per 1 mol O2 + 2 mol H2 -> 6 mol CO2 + 3 mol X resulted in 593115.2346 J energy released~~

	===Spark energy experiment===		===Spark energy experiment===

Wark at 21:17, 15 October 2021

2021-10-15T21:17:13Z

← Older revision		Revision as of 21:17, 15 October 2021
Line 9:		Line 9:
	#Deconstruct the furnace completely to disarm it safely, or connect a single pipe so it can burst and act as a vent		#Deconstruct the furnace completely to disarm it safely, or connect a single pipe so it can burst and act as a vent
	#Alternatively: A circuit could maybe also be used to capture the temperature and pressure at the point of ignition... before the furnace explodes (the pressure will be around 200MPa)		#Alternatively: A circuit could maybe also be used to capture the temperature and pressure at the point of ignition... before the furnace explodes (the pressure will be around 200MPa)

			===Improved experiment===
			#An advanced furnace with connected LED consoles to accurately track temperature and pressure was prepared, a MIPS program was written to show practical and theoretical values
			#the furnace was loaded with fuel and the game saved
			#the fuel was ignited, the temperature and pressure was recorded with many decimal values accuracy
			#the MIPS program numerical value for the released energy was manually tweaked until it was a close fit to the actual Temperature value recorded earlier
			#it was noticed that pressing ignite added a small bit of energy to the furnace, this value was found to be 5 J by a different experiment and subtracted from this result
			#The energy added for combustion (50KPa perfect 2:1 fuel at 4.1°C) was measured to be 563 464.4729 J
			#removing the 5 J from the spark gives 563 459.4729 J
			#dividing by 0.95 to get the energy released per 1 mol O2 + 2 mol H2 -> 6 mol CO2 + 3 mol X resulted in 593115.2346 J energy released

			===Spark energy experiment===
			#A small amount of N2 was placed in an advanced furnace. The TotalMoles and Temperature values were recorded, the specific heat was looked up in game and found to be 20.6
			#Ignite was pressed 2 times, each time the new Temperature was recorded, the increase was the same
			#The energy added per ignite was calculated as: EnergyChange = moles * specificHeat * TemperatureChange
			#The obtained value was 0.499999 J for each button press