File:Energy density.svg

Original file (SVG file, nominally 1,080 × 675 pixels, file size: 64 KB)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

DescriptionEnergy density.svg	English: A plot of selected energy densities (excluding oxidizers).
Date	22 December 2008
Source	Own work Data Source: Energy density, Lithium-ion battery
Author	Scott Dial
Other versions	Derivative works of this file: Energy density-fr.svg Image:Energy_Density.PNG
SVG development InfoField	The SVG code is valid. This plot was created with Matplotlib.
Source code InfoField	Python code #!/usr/bin/env python3 # -- encoding: utf-8 -- import matplotlib matplotlib.use('agg') from matplotlib.font_manager import FontProperties import pylab import sys # (name, MJ/kg, MJ/L, [label-adjustments]) data = ( ('Aluminum', 31.0, 83.8), ('Anthracite', 32.5, 72.4, {'valign': 'top'}), ('Bituminous', 24, 20, {'valign': 'center', 'x': 6.5}), ('Butanol', 36.6, 29.2, {'valign': 'center', 'x': 5}), ('Diesel', 46.2, 37.3, {'valign': 'center', 'x': 4}), ('Ethanol', 30, 24, {'valign': 'center', 'x': 5}), ('Fat Metabolism', 38, 35, {'x': -0.5}), ('Gasoline', 46.4, 34.2, {'valign': 'center', 'x': 5}), ('Gasohol E85', 33.1, 25.65, {'valign': 'center', 'x': 7.5}), ('Glucose', 15.55, 23.9, {'valign': 'center', 'x': 5}), ('Hydrazine', 19.5, 19.3, {'valign': 'center', 'x': -6.5}), ('Hydrogen Gas', 143, 0.01079), ('Hydrogen Gas (700 bar)', 143, 5.6), ('Iron', 5.2, 40.68), # (burned to Fe2O3) ('Kerosene', 42.8, 33, {'valign': 'top'}), ('Liquid Ammonia', 18.6, 11.5, {'valign': 'center', 'x': 9.5}), ('Liquid Hydrogen', 143, 10.1), ('Liquid Natural Gas', 53.6, 22.2, {'valign': 'center', 'x': 10.5}), ('Lithium', 43.1, 23.0, {'valign': 'top'}), ('Lithium Borohydride', 65.2, 43.4), ('LPG Propane', 49.6, 25.3, {'valign': 'center', 'x': 8}), ('LPG Butane', 49.1, 27.7, {'valign': 'center', 'x': 7}), ('Magnesium', 24.7, 43.0), ('Methanol', 19.7, 15.6, {'valign': 'center', 'x': 6}), ('Natural Gas', 53.6, 0.0364), ('Natural Gas (250 bar)', 53.6, 9), ('Polyester', 26.0, 35.6, {'valign': 'top'}), ('Polyethylene', 46.3, 42.6, {'valign': 'center', 'x': 7.5}), ('Polystyrene', 41.4, 43.5), ('Silicon', 32.6, 75.9), ('Sodium', 13.3, 12.8), # (burned to wet NaOH) ('Sugar Metabolism', 17, 26.2), ('Zinc', 5.3, 38.0, {'valign': 'top'}), ('Zinc–Air Battery', 1.59, 6.02, {'valign': 'center', 'x': 9}), # 0.54-0.72, 0.9-1.9 (values used are from the Li-Ion battery article) ('Lithium-Ion Battery', 0.576, 0.972, {'valign': 'center', 'x': 11}), ) font12 = FontProperties(family=['sans-serif'], size=12) font10 = FontProperties(family=['sans-serif'], size=10) font8 = FontProperties(family=['sans-serif'], size=8) pylab.rcParams.update({'figure.figsize': [12, 7.5]}) fig=pylab.figure(1) ax=pylab.axes([0.05, 0.05, 0.95 - 0.05, 0.95 - 0.05]) ax.set_axisbelow(True) for v in data: # (name, MJ/kg, MJ/L, label-adjustments) label = v[0] x = v[1] y = v[2] if len(v) < 4: halign = 'center' valign = 'bottom' x_text = x y_text = y + 0.9 else: halign = v[3].get('halign', 'center') valign = v[3].get('valign', 'bottom') x_text = x + v[3].get('x', 0) y_text = y + v[3].get('y', 0) if valign == 'bottom': y_text += 0.9 elif valign == 'top': y_text -= 0.9 pylab.scatter(x=[x], y=[y], c='b', edgecolors='black') pylab.text(x=x_text, y=y_text, s=label, horizontalalignment=halign, verticalalignment=valign, fontproperties=font10) pylab.title('Selected Energy Densities', fontproperties=font12) pylab.ylabel('MJ/L', fontproperties=font10) pylab.xlabel('MJ/kg', fontproperties=font10) pylab.xticks(fontproperties=font8) pylab.yticks(fontproperties=font8) ax.grid(linestyle='dashed') ax.tick_params(axis="y", direction="in") ax.tick_params(axis="x", direction="in") ax.xaxis.grid(True) ax.yaxis.grid(True) pylab.xlim(0, 160) pylab.ylim(0, 90) pylab.savefig('energy_density.svg', transparent=True)

Licensing

I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	12:58, 23 January 2023	1,080 × 675 (64 KB)	Scott Dial	Restore background transparency
	12:53, 23 January 2023	1,080 × 675 (63 KB)	Scott Dial	Restored title capitalization
	12:41, 23 January 2023	1,080 × 675 (63 KB)	Scott Dial	Fix ticks to be inside of the plot area
	12:33, 23 January 2023	1,080 × 675 (63 KB)	Scott Dial	Restored original chart style
	19:31, 2 November 2021	1,080 × 675 (75 KB)	Mikhail Ryazanov	rm. capitalitis, upd. for modern Python
	05:51, 9 February 2011	1,080 × 675 (114 KB)	Scott Dial	Added and updated points in the graph.
	23:46, 9 February 2009	1,080 × 675 (102 KB)	Scott Dial	Added Li-Ion Battery and removed Teflon
	19:30, 22 December 2008	1,080 × 675 (104 KB)	Scott Dial	{{Information \|Description={{en\|1=A plot of selected energy densities (excluding oxidizers).}} \|Source=Own work by uploader \|Author=Scott Dial \|Date=December 22, 2008 \|Permission= \|other_versions=Image:Energy_Density.PNG }} Data S