Forum : Sustainable Engineering

35

676

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

23

1862

03/07/2023 6:46 PM New Nuke

by lyn

Last post: 03/09/2023 8:52 PM

by lyn

3

716

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

713

11/07/2022 11:18 AM Egg Whites to Filter liquids

by lyn

Last post: 11/08/2022 7:05 AM

by Randall

7

556

10/25/2022 3:10 PM Car radiator, heater core or something else for greenhouse?

Last post: 10/29/2022 11:25 AM

by HiTekRedNek

6

115

06/08/2022 5:08 PM How much does convection slow heat flow downwards in still water?

Last post: 09/18/2022 12:08 PM

by truth is not a compromise

19

259

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

266

04/04/2022 4:43 PM Four seasons greenhouse. 3 inch pipes instead of 2 x 4s in insulated north wall?

Last post: 04/17/2022 7:55 PM

by artsmith

10

182

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

13

61

06/23/2021 3:19 PM Wind and Solar Energy Becomes Cheaper than Coal

by redfred

Last post: 07/01/2021 2:58 AM

26

896

05/26/2021 3:50 AM Maybe Restarting My Solar Experiments, Fixing Past Failings

Last post: 05/28/2021 11:31 PM

by dkwarner

7

1204

01/19/2021 3:55 AM Experimental Greenhouse, Which Data Loggers?

Last post: 05/12/2021 1:52 PM

15

2650

03/26/2021 3:40 AM Energy of the Phase Change in Condensation -- Where Does it Go?

Last post: 04/07/2021 12:51 PM

6

1892

02/09/2021 9:34 AM Size of Cable

by naouras

Last post: 02/12/2021 4:56 AM

by Anonymous Poster

18

867

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

1332

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

13

1222

05/11/2018 11:36 AM Self-Sustained Water Pump

by spammy

Last post: 09/28/2020 5:07 AM

58

3478

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

3895

03/23/2020 12:20 PM COVID-19

by gutmonarch

Last post: 03/24/2020 10:32 AM

by Torqued

20

3017

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

3538

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

518

12/04/2019 12:07 PM China is Building Coal-fired Power Plants in Other Countries

Last post: 01/22/2020 11:44 AM

by DaveD

57

1230

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

1029

11/08/2019 12:51 PM Coal Seam Fires Pour Out CO2 and Poisons

Last post: 11/13/2019 12:32 AM

37

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11/06/2019 2:46 PM Separation

by kambiz2019

Last post: 11/07/2019 4:01 AM

7

1299

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

408

11/01/2019 12:27 PM Negative Efforts to Reduce Global Warming

Last post: 11/04/2019 8:21 AM

23

291

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

407

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

242

05/19/2019 7:26 AM Fuel Cells

by PAPADOC

Last post: 05/23/2019 5:49 PM

29

284

05/13/2019 3:15 PM Hemp Plastic

by icapackrat

Last post: 05/19/2019 2:11 PM

4

94

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

462

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

1046

07/11/2018 9:49 AM Great Pacific Garbage Patch Solutions

by HeadsUp

Last post: 10/31/2018 3:03 PM

by munch

68

657

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

528

08/08/2009 4:05 AM Making Cement from Recycled Materials

by mrswamy

Last post: 09/05/2018 1:15 AM

by sceptic

15

267

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

314

06/22/2017 3:14 PM Rotating Dwelling With Utility Hub Challenge of the Month

Last post: 08/24/2018 9:23 AM

by JBTardis

43

507

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

711

07/13/2017 9:00 AM Climate Change - Again

by PWSlack

Last post: 07/13/2018 6:36 AM

by phoenix911

28

374

04/15/2011 6:10 AM Sorting Plastic from Paper

by bvandedr

Last post: 05/24/2018 2:47 AM

by pranay123

18

745

05/21/2018 12:18 AM Interesting Piece on Environmental Pollution

by lyn

Last post: 05/23/2018 5:06 AM

by IdeaSmith

4

242

12/06/2017 2:15 PM Rheological Testing of Texas Fruitcake

Last post: 05/14/2018 10:02 AM

by davidkakku

45

515

04/06/2018 10:28 AM Salt Battery

by PAPADOC

Last post: 04/09/2018 6:40 PM

by HiTekRedNek

14

735

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

1219

04/25/2010 12:41 PM Solar Air Heater

by nikolay

Last post: 02/08/2018 1:57 PM

by avid0g

55

669

11/20/2017 12:40 PM Distillation Generator

Last post: 12/04/2017 3:16 PM

59

722

11/12/2011 11:24 AM Question About Design Programs

by shaqtus

Last post: 10/28/2017 8:36 AM

by tarun1919

16

150

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

2974

10/11/2017 3:23 PM AI Versus Human Engineering

Last post: 10/23/2017 3:25 PM

by PeterT

13

209

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

344

09/28/2017 10:07 AM New Army Front Deployed Energy Source

Last post: 10/03/2017 3:22 PM

29

360

09/28/2017 10:44 AM Bacterial Spore Engines and Applications?

Last post: 09/28/2017 3:28 PM

by Rixter

8

188

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

845

06/06/2015 10:24 PM Home Built Solar Heater

by Luke S.

Last post: 07/23/2017 4:20 AM

by tonylampard

34

815

09/13/2015 6:34 AM Charging R600a

by hydrogenhead

Last post: 07/21/2017 4:36 PM

by RAMConsult

34

942

05/19/2017 4:30 PM Diatoms and Silica Patterns

Last post: 05/22/2017 11:25 AM

by dkwarner

9

217

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

374

05/04/2017 11:09 AM Energy Storage Efficiency Compared to Scalability Volume

Last post: 05/09/2017 12:11 PM

16

281

04/25/2017 4:48 PM Thermophotovoltaic Advances?? Anyone?

Last post: 04/26/2017 8:44 AM

13

273

04/20/2017 2:05 PM Water Taste Test Winners

Last post: 04/24/2017 4:01 PM

by Brave Sir Robin

4

170

04/17/2017 1:46 PM Solar Moisture Harvesting Using Metal Organic Framework (MOF)

Last post: 04/20/2017 10:44 AM

15

299

04/03/2017 5:52 PM Ground Source Heat Pump - Calculators and Good Idea (?)

by MillMatt

Last post: 04/10/2017 6:53 PM

27

521

03/16/2017 1:16 PM The Big Let Down in Molten Salt Nuclear Fission

Last post: 03/23/2017 10:01 AM

39

386

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

234

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

493

03/12/2017 10:10 PM INDRA Engineering Prize

by GSE

Last post: 03/13/2017 2:49 PM

by Brave Sir Robin

1

178

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

244

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

279

12/15/2016 4:20 PM Heating 14,000 Gallons of Water With No Added Equipment

Last post: 01/24/2017 9:48 AM

36

412

11/22/2016 11:44 AM Hydroelectric Power Generation System Design Recommendation

by philfloridabuckeye

Last post: 11/23/2016 9:06 AM

14

339

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

433

01/08/2008 8:21 AM Smokeless Fuel

by johncash

Last post: 10/02/2016 12:18 AM

by michael htut

5

139

09/26/2016 10:13 AM Fly Away Flywheels

by Drew K

Last post: 10/01/2016 11:38 AM

81

1165

09/27/2016 1:18 PM Solar Water Distillation Using Vacuum Pump

by Metom

Last post: 09/29/2016 10:57 AM

16

404

09/23/2016 9:26 AM HOIP Solar Cells

Last post: 09/27/2016 11:35 AM

17

419

09/08/2016 1:32 PM 24/7 Solar?

by Hannes

Last post: 09/09/2016 4:58 PM

1

307

08/09/2016 4:48 PM Low Energy Nuclear Transmutations

Last post: 08/11/2016 4:09 PM

18

370

09/24/2015 1:06 AM Texas, Unique in so Many Ways

by lyn

Last post: 06/06/2016 2:26 PM

34

513

01/12/2015 9:34 PM Re-purposing Some Items

by lyn

Last post: 06/03/2016 6:51 PM

by Injiniir

15

494

03/28/2016 5:22 AM Ox Power

by Ramm

Last post: 05/26/2016 11:51 AM

by Jpfalt

15

324

04/21/2016 10:57 AM Mars Terraforming Plan Suggestions

Last post: 04/26/2016 2:53 PM

20

350

04/07/2016 7:50 AM Pumps and Energy

by jackiemax

Last post: 04/15/2016 7:37 AM

by phoenix911

15

441

03/31/2016 4:38 AM FW From SW

by Ramm

Last post: 04/10/2016 7:53 AM

by Just an Engineer

26

349

03/05/2016 12:31 PM Vertical Farming Structural Design

by xsolen

Last post: 03/28/2016 4:05 AM

by Ramm

7

331

02/29/2016 11:38 AM Product Reuse - Portable Wind Turbine

by PhoenixBath

Last post: 02/29/2016 2:10 PM

by Doorman

2

228

02/19/2016 1:24 PM Passive Solar Heating/Cooling

Last post: 02/22/2016 2:08 PM

by lyn

22

414

02/15/2016 3:50 PM Geothermal Investors

by sakkid

Last post: 02/19/2016 4:10 PM

by sakkid

8

242

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

714

01/23/2016 9:13 PM Fibre Reinforced Polymer

by Anonymous Poster

Last post: 02/08/2016 11:18 AM

by kayode Oluwabunmi

24

463

01/28/2016 6:32 AM Uruguay Now Generates Almost 100 Percent Of Its Electricity From Renewables

by energyconversion

Last post: 01/29/2016 1:18 PM

4

402

12/13/2015 10:52 PM What is Your Environmental Contribution - Post COP21

by Don from Oz

Last post: 01/25/2016 12:34 AM

by Casper71

44

657

12/08/2015 7:27 AM Solar Energy

by Anonymous Poster

Last post: 12/09/2015 5:17 PM

7

450

10/26/2015 5:21 AM Land Use PM Emission Calculation

by harryspark

Last post: 12/01/2015 9:34 AM