CR4 - Forum: Sustainable Engineering

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Discussion Threads

Create Date / Rating Title / Poster	Last Post	Comments	Views
02/16/2012 7:00 AM Hydro Generator Setup by Basco	03/30/2012 10:14 PM by czgut	19	343
02/02/2012 8:51 AM Search for the Salvaged (Liberty Engines) by EkoNation	02/02/2012 2:08 PM by SolarEagle	3	106
01/26/2012 12:57 PM Looking For a Dissociation/Co-generation Solution by michael phelan Pathfinder Tags: cogeneration high carbon efficiencies	01/27/2012 3:43 PM by SolarEagle	1	58
01/25/2012 9:29 AM Can Syngas Be Used As An Industrial Gas (As An Oxyfuel) To Cut Metal by GlobalReach	08/26/2012 9:35 AM by chtank	51	400
01/23/2012 4:26 PM Dubai Too Hot for Solar Panels? by GlobalReach	03/07/2012 3:44 PM by Johny451	30	553
01/22/2012 1:11 AM R.O. Reject Water Disposal by I.L.M.E.	04/06/2012 6:03 PM by kazemoskoui	24	529
01/18/2012 4:05 AM Quick Charging Technology For Car Battery by Kuldeep Yadav	02/13/2012 5:35 PM by elnav	18	254
01/13/2012 5:25 AM How to Convert Off-peak Wind Energy Into On-peak Electricity Production? by GlobalReach Pathfinder Tags: green tech hydrogen wind energy	02/07/2012 9:32 PM by czgut	93	671
01/07/2012 5:53 PM PV Price Discrepancies by Tompa Pathfinder Tags: energy generation Renewable solar	01/15/2012 8:27 AM by Tompa	75	481
01/03/2012 11:34 PM Waterless Toilets- For Droughted Areas by ds Pathfinder Tags: Alternative toilets	01/12/2012 3:54 PM by Ried	11	254
12/23/2011 4:49 PM Life of the Christmas Tree by HUSH	01/05/2012 2:23 AM by pnaban	3	169
12/21/2011 9:47 AM re-engineering an Economy by David Arens Pathfinder Tags: Money Economy social engineering	01/03/2012 12:31 PM by Anonymous Poster	61	345
12/20/2011 1:42 PM Methane Fuel Cells by Ron Davison Pathfinder Tags: fuel cells	12/31/2011 1:37 AM by ds	54	381
12/17/2011 8:22 PM Glass Recycling by Sid_Sidow	12/31/2011 2:09 AM by ds	15	401
12/07/2011 1:49 AM Capacitor That Serve For Domestic Appliances by Anonymous Poster User-tagged by 1 user	08/23/2012 6:30 AM by Engineer in traing	7	312
12/05/2011 6:05 AM Geothermal Energy by Anonymous Poster	03/01/2012 10:15 AM by vicini	15	153
12/04/2011 4:34 AM Solar Collector by bravo88	12/06/2011 9:11 AM by Ried	11	325
12/01/2011 7:00 AM How Many Retailers Does It Take to Change a Lightbulb? by PWSlack	12/22/2011 10:54 PM by 129CBRider	14	303
11/26/2011 2:03 AM Stirling Engines by nikos larissis	12/02/2011 4:24 AM by woodpower	5	315
11/21/2011 9:10 PM Test On the Underwater-Current Flow Along the Eastern Coastal Waters of Negros by Hyginus Parco Pathfinder Tags: Renewable Energy Using under-water tidal current	11/30/2011 11:00 AM by cuba_pete	4	59
11/21/2011 4:45 PM Very Small Commercial Windmill/Generator? by Roland Burton Pathfinder Tags: very small windmill	11/22/2011 10:09 AM by 129CBRider	9	300
11/17/2011 11:06 PM Small Vehicle for Pulling Unmotorized RVs by ds	12/03/2011 8:13 AM by 129CBRider	17	272
11/12/2011 11:24 AM Question About Design Programs by shaqtus	11/13/2011 10:36 PM by lyn	15	91
11/08/2011 11:05 PM Solar Cell Deteriorates When Exposed to Air by conntaxman	11/10/2011 3:27 PM by Tompa	23	355
11/08/2011 10:13 PM Power in the Wind by johnnyb5	01/17/2012 6:52 AM by Garthh	36	329
11/05/2011 2:15 AM Solar Evaporation Ponds by gaurav.rkadam	11/10/2011 4:17 AM by PWSlack	3	84
11/04/2011 9:04 AM Wind Power Illusion by zgm	11/04/2011 11:05 AM by tcmtech	6	130
11/02/2011 7:30 AM Voltage Rating by garuda777 Pathfinder Tags: crash barrier voltage rating	11/02/2011 7:33 PM by jack of all trades	1	55
10/30/2011 8:00 AM Photovoltaic Cells- What's to Stop You Doing This.... by brian hughes	11/02/2011 9:32 AM by brian hughes	17	354
10/27/2011 9:31 AM Dust Emission Calculation by gussosa Pathfinder Tags: Air bulk control dust emission ...	09/25/2012 12:37 PM by hzheng	10	208
10/26/2011 3:08 AM Resonance, Traveling Wave: Cheap Way to Compress Air? by Lutherman Pathfinder Tags: "closed side branches" "flow-induced pulsations" "vortex-induced pulsations"	05/07/2012 9:05 AM by MarkhamCornoit	122	778
10/23/2011 2:42 PM Welding E4340 by w.c.proctor	10/23/2011 2:42 PM by w.c.proctor	0	40
10/19/2011 1:39 AM Plasma Arc Trash Treatment by gibraltar Pathfinder Tags: plasma	10/09/2012 9:36 AM by MJCronin	4	90
10/17/2011 7:37 AM New Use For Thin Plastic Store Bags by kramarat Pathfinder Tags: Recycling plastic bags	10/24/2011 4:08 PM by 34point5	35	507
10/15/2011 7:19 PM Test by Anonymous Poster	10/19/2011 6:33 AM by RoyBoy2727	13	65
10/15/2011 11:59 AM What are the Benefits of Reforestation by ravimalhi544	11/23/2011 12:03 AM by 129CBRider	17	158
10/15/2011 11:49 AM Reforestation by ravimalhi544	10/16/2011 9:28 AM by jtd405	4	101
10/11/2011 8:52 PM Philippine Test Case 1201-C: What Better Option(s) Would You Suggest? by manilaman Pathfinder Tags: CHP Paper Mill Philippines renewable energy	10/13/2011 7:23 PM by Far	1	86
10/06/2011 5:11 AM Facts ? by Dilip Dombivalikar Pathfinder Tags: Other side of the coin	10/19/2011 12:01 AM by pnaban	26	223
10/02/2011 5:40 AM Windmill Vs Grid Stability? by mansoor_vm	10/18/2011 1:17 PM by russ123	16	371
09/25/2011 1:23 AM Small 12v Project Needs Help by oscarillo	09/30/2011 4:27 PM by K_Fry	35	370
09/24/2011 11:57 PM Use of Air Conditioner by package54	09/26/2011 7:46 AM by ozzb	9	292
09/16/2011 1:31 AM Something New in Fusion Research by Ed Weldon Pathfinder Tags: fusion green energy ITER stallerator tokomak ...	09/18/2011 11:10 PM by Tornado	13	227
09/15/2011 10:27 AM Energy Harvesting Gets a Boost by AstroNut	09/17/2011 12:18 PM by James Stewart	6	169
09/12/2011 10:03 AM DIY Gassification by bc_eng	10/20/2011 4:18 PM by marcopolo	17	385
09/08/2011 6:46 AM Solar Pre-heated Water - Need Help Getting Water To Flow by Dennis Beckwith Pathfinder Tags: HOTWATER solar	09/17/2011 2:06 PM by artsmith	44	841
09/05/2011 12:34 PM Nutrient Value of Algae by qaqcpipeman	09/27/2011 5:21 PM by qaqcpipeman	10	251
09/04/2011 6:38 AM Micro Hydro and Wind Turbine - Closed Loop for Water by cristle	01/30/2012 8:38 PM by czgut	15	388
09/01/2011 4:21 PM Harvesting Overflow to Boost Water Pressure by Garthh	09/25/2011 1:21 AM by MUKULMAHANT	30	421
08/31/2011 2:42 PM Solyndra Chapter 11; End of US Solar mfg.? by Ed Weldon	09/09/2011 7:42 AM by PFR	33	354
08/29/2011 1:38 AM Concre flooring with Acid Stain finish by foretec	08/29/2011 1:46 AM by Tornado	1	77
08/25/2011 11:47 PM Philippine Test Case # 1201: What would you recommend as a Power Plant by manilaman Pathfinder Tags: alternative energy CHP Philippines renewable energy	08/26/2011 12:09 AM by Tornado	1	133
08/23/2011 5:15 AM Methane Yield Versus Duration of Exposure (Before Getting Into Digester) by Kemal Pathfinder Tags: biogas	08/23/2011 9:45 AM by Kemal	3	152
08/21/2011 10:31 PM Plant Advisor by Arianto Soebagio	08/23/2011 10:53 PM by Qwack	5	147
08/13/2011 9:50 AM Implux and Windgate Wind Turbines for Low Breezes. by duikerbok	08/26/2011 1:21 PM by duikerbok	5	140
08/12/2011 4:47 PM Philippine Test Case # 1101: What Would You Recommend As An Appropriate RE Power by manilaman Pathfinder Tags: alternative energy Philippines	08/15/2011 5:41 PM by indel	16	130
08/04/2011 8:21 AM Above Ground Pool Solar Coil Design by brfox Pathfinder Tags: Above Ground Pools solar coil	08/13/2011 3:45 PM by ky	15	165
08/03/2011 2:27 AM Air Compressor Capacity? by JBK Pathfinder Tags: Air Compressor Capacity	08/03/2011 6:52 AM by Anonymous Poster	1	159
07/31/2011 2:27 PM Cheap Plastic Made from Sugarcane by Garthh	08/08/2011 10:31 AM by Doorman	30	322
07/28/2011 10:02 AM House made of plastic bottles by Blokle	07/29/2011 9:20 AM by 34point5	9	127
07/24/2011 8:00 PM ICF or SIP's Even Steel is Actually Sustainable by rwengin	07/24/2011 8:00 PM by rwengin	0	73
07/11/2011 10:02 AM Lamp Recycling = Artificial Industry? by NotUrOrdinaryJoe Pathfinder Tags: fluorescent lamps Lamp recycling lead Mercury	07/13/2011 11:35 AM by WWkayaker	14	294
07/08/2011 9:38 PM Why We Should Build Floating Towns and Cities by GEORGEB	10/07/2011 2:47 AM by YASHWANTH prathap chandran	30	382
07/07/2011 11:55 AM Optimized Engineering Materials Through Cleantech by pvhramani Pathfinder Tags: Agro-biogenics Aircrfat Structure APIX Products Automobile Structure Bio-Composites ...	07/26/2011 11:18 AM by pvhramani	14	713
07/02/2011 8:07 PM Wave Power Generation Using Reservoirs by GEORGEB Pathfinder Tags: wave power	07/08/2011 4:34 PM by Sleepy	35	376
06/28/2011 12:46 AM Power generation from Cotton Waste by ajsmmill	07/06/2011 8:56 PM by 129CBRider	6	89
06/24/2011 6:11 AM Wind Loads on PV Structures, Ground Mounted by Raam Pathfinder Tags: mounting PV structures TILT Wind Loads	12/22/2011 12:15 AM by rikio	13	398
06/22/2011 4:12 AM Reciprocating Air Compressor with Bull Power by balakrishnan Pullat	07/07/2011 12:37 PM by esbuck	26	250
06/20/2011 10:36 PM Wind Turbine Local Loop by JEP	07/14/2011 10:48 PM by 129CBRider	44	365
06/20/2011 8:57 AM Biogas Generation by bravo88	06/22/2011 12:41 PM by Gazu	5	207
06/19/2011 8:11 AM Stirling Engine by chandu krishnamurthi	09/18/2011 1:18 AM by redfred	65	410
06/19/2011 4:26 AM Can Mother Earth Sustain Her Population? by bravo88	06/24/2011 10:00 AM by electronick	22	151
06/16/2011 7:15 PM Specific Heat Value of Cow Manure by johnroy	06/19/2011 10:42 AM by pritam	14	449
06/13/2011 2:19 PM Recycled Wood and Wood Products by Nickjd Pathfinder Tags: cellulose composite lignin recycled wood wood	06/23/2011 9:21 PM by 129CBRider	21	384
06/12/2011 2:40 PM Waste Water Treatment by Magz Pathfinder Tags: recycling of pig house water waste water processing	06/15/2011 9:42 AM by WJMFIRE	16	262
06/11/2011 1:17 PM Designing Gas for Different Temperatures to Cut Costs by ds	08/12/2011 4:29 PM by ky	22	187
06/07/2011 5:45 AM Residual Current by 466576266	06/07/2011 5:49 AM by Anonymous Poster	1	63
06/03/2011 11:59 PM Off Grid PV Solar Array Sizing by A.A.Khi Pathfinder Tags: Solar PV	06/06/2011 4:27 AM by Andy Germany	16	289
06/01/2011 9:45 AM Micro Biogas System? by jayjayfraher Pathfinder Tags: Ground Source Heat Pumps Human Effluent Methane gas	09/16/2011 10:33 AM by Mizun	4	96
05/28/2011 11:23 PM Gravity Siphoning A Pond- Siphon Is Underground, Moving Water To Ground Surface? by Seechet	06/03/2011 1:01 PM by Seechet	14	375
05/23/2011 2:33 PM Cost of Shipping Containers in Haiti by Shannon Link	07/05/2011 2:52 PM by sophia	27	349
05/18/2011 2:09 AM Possibly the Perfect Reflective Surface for Solar? by sugarandfat Pathfinder Tags: solar reflective surface aluminium aluminum	06/06/2012 6:54 AM by sugarandfat	20	450
05/15/2011 10:51 AM Hydro Power-Clarification Request On Certain Doubts by s.udhayamarthandan Pathfinder Tags: Hydro power turbine capacities Vs electrical gener	06/12/2011 7:40 AM by pritam	5	134
05/14/2011 3:39 PM Food Grows Where Water Flows...How Fast? by JCOLL	05/14/2011 3:39 PM by JCOLL	0	67
05/13/2011 12:26 AM Drone Submarine Oil Tanks by ds	05/14/2011 9:26 AM by HiTekRedNek	4	125
05/10/2011 8:08 AM Installation of Solar System by Anonymous Poster	05/14/2011 9:28 AM by Gazu	28	431
05/09/2011 1:36 AM Lightening Energy Spectrum by mikespike	05/31/2011 12:14 PM by mjb1962853	13	258
05/02/2011 5:28 AM Modern Solar Heat Collectors, What Happens If the Energy is Not Used? by Andy Germany Pathfinder Tags: solar hot water vacuum collector glass overheating	05/07/2011 3:07 PM by Andy Germany	20	586
05/02/2011 12:51 AM Smart Grid by mansoor_vm	05/26/2011 2:43 PM by RAMConsult	33	373
04/29/2011 12:12 PM Xantrex 1800 Watt Solar Package by huron Pathfinder Tags: Xantrex Solar Package 1800 Watt	05/04/2011 10:59 PM by EV1guy2004	28	381
04/26/2011 7:01 PM Stored Used Reactor Rods by NoSciFi Pathfinder Tags: fission Oklo storage	05/04/2011 8:54 AM by Rorschach	47	634
04/22/2011 2:42 AM Nano Airlift Pump? How High Can it Pump? by gaiatechnician Pathfinder Tags: airlift. bubble pump User-tagged by 1 user	03/13/2012 1:18 PM by gaiatechnician	14	375
04/20/2011 12:22 PM Waste to Energy Technology Wanted by chrissaki Pathfinder Tags: Energy waste	04/21/2012 2:36 AM by umer001	13	174
04/19/2011 3:00 PM Vanadium Inhabitor by adnanfakhar	04/19/2011 3:00 PM by adnanfakhar	0	28
04/15/2011 6:10 AM Sorting Plastic from Paper by bvandedr Pathfinder Tags: Environment MSW plastics RDF recycling ...	05/10/2011 10:44 AM by vanrainey	16	205
04/13/2011 11:42 AM Potential Hydro Sites by Stan The Man	04/18/2011 7:55 PM by buzneg	30	278
04/05/2011 6:29 AM High Temperature Water vs Pressure by riverrunner	04/05/2011 3:28 PM by Noudge79	3	141
03/31/2011 5:22 AM Jacket Around Pipe Having High Pressure Ammonia by Narinder Pal Singh	05/09/2011 1:20 AM by Narinder Pal Singh	28	489
03/30/2011 11:54 PM How do we Cope with Change? by intwizs	05/07/2011 1:04 AM by 2tinker	9	184
03/25/2011 10:35 PM Thermal Storage by Anonymous Poster	12/23/2011 5:56 PM by oliverg1	13	295
03/25/2011 1:21 AM Solar Power by Joe Cacek Pathfinder Tags: solar collectors	04/06/2011 3:36 AM by Ram44	2	197

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