Forum : Sustainable Engineering

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Create Date / Rating Title / Poster	Last Post	Comments	Views
04/26/2009 5:32 AM Goodbye to Chemical Batteries by Azizsangi	Last post: 10/27/2025 10:07 AM by Makallamt	46	2858
09/29/2025 10:02 PM Where is the Cheapest Gas in North America for Gas Turbine Driven Bitcoin Mining Data Centers to be Built by Anonymous Poster	Last post: 10/01/2025 4:33 AM by DaveD	2	96
09/16/2025 8:18 AM Sustainable Engineering: The Role of Environmental Product Declarations (EPDs) in Green Projects by certifypowerhouse	Last post: 09/16/2025 9:22 AM by certifypowerhouse	5	95
08/27/2025 1:36 AM "Sun Scoop" Tacking Solar Cooker, 600 Watts, How Much Dehydration? by gaiatechnician	Last post: 08/28/2025 7:13 PM by gaiatechnician	7	314
07/27/2025 2:19 PM Solar-Steamed Soil with Chopped Weeds, Alternative to Slash and Burn? by gaiatechnician	Last post: 08/04/2025 8:11 AM by HiTekRedNek	9	319
05/25/2025 10:33 PM Impact Resistant Solar PV Panels by Ron Nombri	Last post: 06/20/2025 5:31 AM by HiTekRedNek	12	651
10/12/2014 9:51 AM Fresh bachelor by Anonymous Poster	Last post: 03/24/2025 6:23 AM by PWSlack	58	1353
04/11/2010 8:47 AM How to Separate Al and Cu? by Anonymous Poster	Last post: 08/15/2024 9:35 AM by PWSlack	13	1899
07/13/2010 6:34 AM Thickness and Melting Point of AISI 304 Stainless Steel by kokyr	Last post: 02/21/2024 8:06 AM by PWSlack	8	1162
09/08/2017 3:53 AM New Method of Sea Water Desalination by Flotation of Liquid Salt by mikespike	Last post: 09/20/2023 7:34 AM by PWSlack	35	1047
03/27/2008 10:55 AM Can an electric water heater be operated on its side? by corneliusvansant	Last post: 09/01/2023 7:29 AM by PWSlack	23	2608
03/07/2023 6:46 PM New Nuke by lyn	Last post: 03/09/2023 8:52 PM by lyn	3	758
11/26/2022 7:58 AM Inverted Spillway on a Lake by HiTekRedNek ; also posted in General Discussion, Civil Engineering	Last post: 12/03/2022 12:03 PM by redfred	19	854
11/07/2022 11:18 AM Egg Whites to Filter liquids by lyn	Last post: 11/08/2022 7:05 AM by Randall	7	596
10/25/2022 3:10 PM Car radiator, heater core or something else for greenhouse? by gaiatechnician	Last post: 10/29/2022 11:25 AM by HiTekRedNek	6	172
06/08/2022 5:08 PM How much does convection slow heat flow downwards in still water? by gaiatechnician	Last post: 09/18/2022 12:08 PM by truth is not a compromise	19	309
06/02/2022 4:58 PM This just in,… what a messed up world… by phoenix911	Last post: 06/09/2022 11:50 AM by Anonymous Poster	24	329
04/04/2022 4:43 PM Four seasons greenhouse. 3 inch pipes instead of 2 x 4s in insulated north wall? by gaiatechnician	Last post: 04/17/2022 7:55 PM by artsmith	10	250
02/15/2022 7:59 AM I designed a 1 megawatt wind turbine that cost $25000 to $16000 for 25 years of active use what's it worth by alex12	Last post: 02/15/2022 9:36 PM by SolarEagle	13	193
06/23/2021 3:19 PM Wind and Solar Energy Becomes Cheaper than Coal by redfred	Last post: 07/01/2021 2:58 AM by SolarEagle	26	932
05/26/2021 3:50 AM Maybe Restarting My Solar Experiments, Fixing Past Failings by gaiatechnician	Last post: 05/28/2021 11:31 PM by dkwarner	7	1241
01/19/2021 3:55 AM Experimental Greenhouse, Which Data Loggers? by gaiatechnician	Last post: 05/12/2021 1:52 PM by gaiatechnician	15	2730
03/26/2021 3:40 AM Energy of the Phase Change in Condensation -- Where Does it Go? by gaiatechnician	Last post: 04/07/2021 12:51 PM by gaiatechnician	6	1932
02/09/2021 9:34 AM Size of Cable by naouras	Last post: 02/12/2021 4:56 AM by Anonymous Poster	18	929
01/03/2021 1:24 PM Creating 0.7 MW -1 MW Wind Turbines for Less then 40,000 USD by alex12	Last post: 01/17/2021 10:17 PM by jack of all trades	29	1410
01/08/2021 10:20 AM Green Energized Off Grid Mobile Homes NSA Fasttrack Grant Need Partner by David Pressler	Last post: 01/09/2021 12:47 PM by SolarEagle	13	1263
05/11/2018 11:36 AM Self-Sustained Water Pump by spammy	Last post: 09/28/2020 5:07 AM by gaiatechnician	58	3524
12/13/2010 6:12 PM Sticker Remover Methods by mdsrecycling ; also posted in Chemical & Material Science	Last post: 09/14/2020 3:35 AM by WindyInTexas	54	3936
03/23/2020 12:20 PM COVID-19 by gutmonarch	Last post: 03/24/2020 10:32 AM by Torqued	20	3048
08/12/2013 3:35 PM Sustainable Earth Coupling or Wind Milling? by JP76	Last post: 03/04/2020 4:40 PM by Yury P.	78	3604
01/23/2020 6:33 AM Mixed Plastic Waste Converted Back to Oil by jhhassociates	Last post: 01/27/2020 7:05 AM by Just an Engineer	12	569
12/04/2019 12:07 PM China is Building Coal-fired Power Plants in Other Countries by StandardsGuy	Last post: 01/22/2020 11:44 AM by DaveD	57	1268
12/10/2019 3:50 AM Power Plant Set to Become World's First Carbon-Negative Business by PWSlack	Last post: 12/15/2019 8:21 PM by JWthetech	9	1069
11/08/2019 12:51 PM Coal Seam Fires Pour Out CO2 and Poisons by StandardsGuy	Last post: 11/13/2019 12:32 AM by SolarEagle	37	1504
11/06/2019 2:46 PM Separation by kambiz2019	Last post: 11/07/2019 4:01 AM by PWSlack	7	1332
10/22/2019 8:41 AM Ozone Hole Smallest Since Records Began, Say Scientists by PWSlack	Last post: 11/06/2019 11:58 AM by MR. Guest	22	441
11/01/2019 12:27 PM Negative Efforts to Reduce Global Warming by StandardsGuy	Last post: 11/04/2019 8:21 AM by PWSlack	23	329
10/15/2019 5:21 PM Calculating Torque Over a Surface Area by MICHAEL BERDAN	Last post: 10/17/2019 9:00 AM by MICHAEL BERDAN	18	524
08/03/2019 6:20 AM Recycling Bikini Wax by Nothing is Impossible	Last post: 08/24/2019 11:06 AM by Anonymous Poster	4	272
05/19/2019 7:26 AM Fuel Cells by PAPADOC	Last post: 05/23/2019 5:49 PM by SolarEagle	29	314
05/13/2019 3:15 PM Hemp Plastic by icapackrat	Last post: 05/19/2019 2:11 PM by PWSlack	4	127
03/11/2019 5:07 PM Recycling... Have We Created a Monster? by JE in Chicago	Last post: 03/18/2019 1:25 PM by rashavarek	41	501
04/16/2014 2:28 AM An Idea For Safer Storage of HHO by hydrogenhead	Last post: 02/10/2019 1:10 PM by Feenix	22	1173
07/11/2018 9:49 AM Great Pacific Garbage Patch Solutions by HeadsUp	Last post: 10/31/2018 3:03 PM by munch	68	697
01/30/2011 7:52 AM Woodfired Boiler For Home Radiant Heating? by bobthefarmer	Last post: 10/17/2018 5:11 AM by Andy Germany	18	561
08/08/2009 4:05 AM Making Cement from Recycled Materials by mrswamy	Last post: 09/05/2018 1:15 AM by sceptic	15	321
08/24/2018 1:58 AM Upcycle or Recycle: What Would You Build? by Nothing is Impossible	Last post: 09/02/2018 8:25 PM by Nothing is Impossible	19	349
06/22/2017 3:14 PM Rotating Dwelling With Utility Hub Challenge of the Month by James Stewart	Last post: 08/24/2018 9:23 AM by JBTardis	43	547
10/15/2017 12:31 PM Interesting? New Wind Turbine Design by lyn	Last post: 08/24/2018 5:39 AM by truth is not a compromise	42	760
07/13/2017 9:00 AM Climate Change - Again by PWSlack	Last post: 07/13/2018 6:36 AM by phoenix911	28	417
04/15/2011 6:10 AM Sorting Plastic from Paper by bvandedr	Last post: 05/24/2018 2:47 AM by pranay123	18	821
05/21/2018 12:18 AM Interesting Piece on Environmental Pollution by lyn	Last post: 05/23/2018 5:06 AM by IdeaSmith	4	270
12/06/2017 2:15 PM Rheological Testing of Texas Fruitcake by James Stewart	Last post: 05/14/2018 10:02 AM by davidkakku	45	573
04/06/2018 10:28 AM Salt Battery by PAPADOC	Last post: 04/09/2018 6:40 PM by HiTekRedNek	14	779
03/06/2009 6:36 AM What's the True Cost of Wind Energy? by cwarner7_11	Last post: 02/19/2018 4:51 PM by avid0g	92	1274
04/25/2010 12:41 PM Solar Air Heater by nikolay	Last post: 02/08/2018 1:57 PM by avid0g	55	738
11/20/2017 12:40 PM Distillation Generator by James Stewart	Last post: 12/04/2017 3:16 PM by James Stewart	59	757
11/12/2011 11:24 AM Question About Design Programs by shaqtus	Last post: 10/28/2017 8:36 AM by tarun1919	16	185
09/30/2012 10:55 AM Low Pressure Water Distillation. Why is it Not Used More? by tcmtech	Last post: 10/27/2017 12:49 AM by RegularAndy	55	3199
10/11/2017 3:23 PM AI Versus Human Engineering by James Stewart	Last post: 10/23/2017 3:25 PM by PeterT	13	245
10/20/2017 4:55 PM An Interesting (Surprising) Perspective on Coal by lyn	Last post: 10/23/2017 11:58 AM by Dennis R. Levesque	4	377
09/28/2017 10:07 AM New Army Front Deployed Energy Source by James Stewart	Last post: 10/03/2017 3:22 PM by James Stewart	29	403
09/28/2017 10:44 AM Bacterial Spore Engines and Applications? by James Stewart	Last post: 09/28/2017 3:28 PM by Rixter	8	217
07/19/2017 11:54 PM Shortcuiting the Solar PV Array by sudhakar veerasamy	Last post: 07/31/2017 8:10 PM by truth is not a compromise	43	1102
06/06/2015 10:24 PM Home Built Solar Heater by Luke S.	Last post: 07/23/2017 4:20 AM by tonylampard	34	852
09/13/2015 6:34 AM Charging R600a by hydrogenhead	Last post: 07/21/2017 4:36 PM by RAMConsult	34	1259
05/19/2017 4:30 PM Diatoms and Silica Patterns by James Stewart	Last post: 05/22/2017 11:25 AM by dkwarner	9	259
05/11/2017 12:32 PM Tesla Solar Panel Vs. Hail Cannon by rashavarek	Last post: 05/15/2017 11:26 AM by Brave Sir Robin	9	415
05/04/2017 11:09 AM Energy Storage Efficiency Compared to Scalability Volume by James Stewart	Last post: 05/09/2017 12:11 PM by James Stewart	16	327
04/25/2017 4:48 PM Thermophotovoltaic Advances?? Anyone? by James Stewart	Last post: 04/26/2017 8:44 AM by James Stewart	13	302
04/20/2017 2:05 PM Water Taste Test Winners by James Stewart	Last post: 04/24/2017 4:01 PM by Brave Sir Robin	4	209
04/17/2017 1:46 PM Solar Moisture Harvesting Using Metal Organic Framework (MOF) by James Stewart	Last post: 04/20/2017 10:44 AM by James Stewart	15	346
04/03/2017 5:52 PM Ground Source Heat Pump - Calculators and Good Idea (?) by MillMatt	Last post: 04/10/2017 6:53 PM by SolarEagle	27	569
03/16/2017 1:16 PM The Big Let Down in Molten Salt Nuclear Fission by James Stewart	Last post: 03/23/2017 10:01 AM by James Stewart	39	409
03/19/2017 2:27 PM Art Rosenfeld the Father of Energy Efficiency by EV1guy2004	Last post: 03/20/2017 2:37 PM by tcmtech	3	275
03/11/2017 9:45 PM Mini Boiler Project of Mine by tcmtech	Last post: 03/16/2017 12:25 PM by Drew K	47	541
03/12/2017 10:10 PM INDRA Engineering Prize by GSE	Last post: 03/13/2017 2:49 PM by Brave Sir Robin	1	220
02/11/2017 5:02 PM Manipulated Global Warming Data--Billions Spent by JE in Chicago	Last post: 02/21/2017 6:04 PM by Mikerho	39	276
02/05/2017 6:16 PM Leading AGW/Climate Change Leaders Caught Manipulating Data Again by tcmtech	Last post: 02/15/2017 1:48 PM by tcmtech	27	317
12/15/2016 4:20 PM Heating 14,000 Gallons of Water With No Added Equipment by James Stewart	Last post: 01/24/2017 9:48 AM by James Stewart	36	462
11/22/2016 11:44 AM Hydroelectric Power Generation System Design Recommendation by philfloridabuckeye	Last post: 11/23/2016 9:06 AM by James Stewart	14	380
10/12/2016 2:40 PM Cost Per Unit kWh of a Battery Over Its Life by jawadwaheed09	Last post: 11/20/2016 4:15 PM by 67model	17	477
01/08/2008 8:21 AM Smokeless Fuel by johncash	Last post: 10/02/2016 12:18 AM by michael htut	5	172
09/26/2016 10:13 AM Fly Away Flywheels by Drew K	Last post: 10/01/2016 11:38 AM by SolarEagle	81	1224
09/27/2016 1:18 PM Solar Water Distillation Using Vacuum Pump by Metom	Last post: 09/29/2016 10:57 AM by James Stewart	16	443
09/23/2016 9:26 AM HOIP Solar Cells by James Stewart	Last post: 09/27/2016 11:35 AM by James Stewart	17	462
09/08/2016 1:32 PM 24/7 Solar? by Hannes	Last post: 09/09/2016 4:58 PM by James Stewart	1	340
08/09/2016 4:48 PM Low Energy Nuclear Transmutations by James Stewart	Last post: 08/11/2016 4:09 PM by James Stewart	18	410
09/24/2015 1:06 AM Texas, Unique in so Many Ways by lyn	Last post: 06/06/2016 2:26 PM by James Stewart	34	543
01/12/2015 9:34 PM Re-purposing Some Items by lyn	Last post: 06/03/2016 6:51 PM by Injiniir	15	530
03/28/2016 5:22 AM Ox Power by Ramm	Last post: 05/26/2016 11:51 AM by Jpfalt	15	363
04/21/2016 10:57 AM Mars Terraforming Plan Suggestions by James Stewart	Last post: 04/26/2016 2:53 PM by James Stewart	20	377
04/07/2016 7:50 AM Pumps and Energy by jackiemax	Last post: 04/15/2016 7:37 AM by phoenix911	15	480
03/31/2016 4:38 AM FW From SW by Ramm	Last post: 04/10/2016 7:53 AM by Just an Engineer	26	384
03/05/2016 12:31 PM Vertical Farming Structural Design by xsolen	Last post: 03/28/2016 4:05 AM by Ramm	7	361
02/29/2016 11:38 AM Product Reuse - Portable Wind Turbine by PhoenixBath	Last post: 02/29/2016 2:10 PM by Doorman	2	261
02/19/2016 1:24 PM Passive Solar Heating/Cooling by James Stewart	Last post: 02/22/2016 2:08 PM by lyn	22	452
02/15/2016 3:50 PM Geothermal Investors by sakkid	Last post: 02/19/2016 4:10 PM by sakkid	8	280
12/01/2015 7:51 AM Carbon Free Power Production by 2050 by NotUrOrdinaryJoe	Last post: 02/10/2016 8:43 PM by Canary	102	764
01/23/2016 9:13 PM Fibre Reinforced Polymer by Anonymous Poster	Last post: 02/08/2016 11:18 AM by kayode Oluwabunmi	24	498

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