Tom M's posts

Posted by Tom M on Jul 22, 2004 08:00 am

#451 -  Renewable Energy > Technical Discussion: Other > Re: Bypass Diodes / Do I need them?
Chris, you said it is in the controller..

Posted by Tom M on Jul 15, 2004 10:46 am

#452 -  Renewable Energy > Wanted > Re: Propane Refrigerator In Stainless?
Clair, buy some stainless steel sheet and attach it to the surface area of the refrigerator.....

Posted by Tom M on Jul 15, 2004 10:08 am

#453 -  Renewable Energy > Technical Discussion: Other > Re: Last-Ditch Gel Cell Fix....
Chris, go for it..old gel cell batteries need the distilled water as a medium to transfer it's electrolytes..sounds like the batteries are pretty old anyway...might be time for new ones....

Posted by Tom M on Jul 15, 2004 09:37 am

#454 -  Renewable Energy > RE General Discussion > Re: The law and electricity
Thomas, it's not with the government per se, supposedly the people are the government, so it is people who are to blame. Education is the real key. Ignorance is bliss? This is why those who run the government keep us in the dark, on many issues,(it was funny when bush didn't know what a CNC machine was and was joking about it the other week), though the option to see the light is there. We can educate ourselves and learn what they are doing to us or else fall prey to them. A good example is the FDA, especially pharmacuticles, people wait until they approve what we intake, only then do the people ingest. Then time down the road, we are told it is no good and then have to fix ourselves with what they come up with next, not realizing that this too is not what it claims to be. So solar is something we have to do ourselves, and monies wasted on trying to convince those in the gov. otherwise could be used to grow the solar economy by manufacturing and installing and lowering pricing......with out their okay...since it is already legal.....

Posted by Tom M on Jul 6, 2004 04:25 pm

#455 -  Renewable Energy > RE General Discussion > Re: hydroelectric power system
chcoffing, best thing to do is decide what unit you are going to use then examine their specs as to what head and what flow (gpm) will work best for your application. Different size nozzles can be added depending on these inputs....

Posted by Tom M on Jul 6, 2004 04:21 pm

#456 -  Renewable Energy > Technical Discussion: Other > Re: GFP breakers
Thomas, not sure why you need GFP breakers. The panels should be grounded along with the rest of the system. Regular electric breakers are good for pv system up to 48 volts dc and are a lot cheaper and readily available....

Posted by Tom M on Jul 6, 2004 04:04 pm

#457 -  Renewable Energy > RE General Discussion > Re: Am I really being Net Metered?
Chris, the best thing to do is disconnect yourself from the utility company, who you are trying to avoid in the first place and use your generated electricity for yourself. When you sell your power back to the company, do you charge them all the fees that they charge you, which is normally 1/3+ of your bill. Then the energy you supply them will be redistributed at their higher rate. So then there will be no confusion of who's paying who. Also the money you save on fees can be put toward a battery bank. Then maybe you can sell your excess to your neighbors....

Posted by Tom M on Jul 6, 2004 03:57 pm

#458 -  Renewable Energy > RE General Discussion > Re: Books
goliath, you should be able to find all the basic info you need in your studies as an engineer, so check out your textbooks......

Posted by Tom M on Jun 23, 2004 07:35 am

#459 -  Renewable Energy > RE General Discussion > Re: NOVICE Q: Solar feasibility in Northeast US suburbs
burke, here are some answers to your questions;
1. new england is perfect for solar. Lower temperatures and clear skies in the colder seasons actually increase radiation gain. System work well year round.

2. using hot water panels. Radiation actually penetrates the snow and ice to heat the panel which will eventually melt the snow. Or, you can just turn on your pump manually to run hot water into the panel from your tank or boiler to melt the snow. Or you can consider a ground mount, then you can clean them whenever it is needed.

3. South is best, you can alway tilt the panels. You just have to be careful of shading.

4. Yup, you can use the hot water for heating too. Using a heat exchanger tank you can send hot water through your radiant heat or baseboards or fan assisted heat exchanger.

5. pumps, piping to and from panels, insulation and controls and wiring......


Posted by Tom M on Jun 23, 2004 07:23 am

#460 -  Renewable Energy > RE General Discussion > Re: solar startr
jonathan, first you need to know what you plan to utilize the solar for ......

Posted by Tom M on Jun 23, 2004 07:00 am

#461 -  Renewable Energy > RE General Discussion > Re: Need help with solar panels
jessiwall, it is possible that the three that are disconnected may be bad. Look for specifications on the panels, there should be some type of metal/metallic tag attached somewhere, that will tell you the panel's rating. To test them, disconnect all the panels and test the two panels that seem to be good, check the voltage output by attaching an electrical meter, set to read DC voltage, to the positive and negative leads. It should read somewhere between 12 and 18 V DC in good sun. If your meter is able to read current, amps, then switch the meter to that mode and again attach the leads +/-. If they are 64 Watt panels then the short circuit current (Isc) should be between 64/12 = 5 amps or so. Do this for each panel. If a panel is damaged the readings will be a lot lower. Sometimes it is just one cell in the panel that can break the chain and degrade the entire panel, then if it is attached with others it will degrade the whole system, which may be why some are detached. You can open the panel and check each individual cell to determine which one/s are bad and skip over them if you are handy with soldering.....Otherwise, keeping the other panels will definately not hurt. You can use them to have several batteries charged at all times and with a small inverter you can run dedicated circuits to lights and outlets to operate items year round and in emergencies, even some heating systems.....

Posted by Tom M on Apr 21, 2004 09:18 am

#462 -  Renewable Energy > Technical Discussion: Other > Re: Active wifi repeater with solar cell
Alex, a 20 watt panel should give you 160 watt hrs per day, if you have 8 hrs of sun, then along with small charge controller and a battery with at least 80 amp hours of storage, to last for three days should do you. You may be best off if you get a small 12 to 120 Volt inverter if your radio already has a 120 to 5 volt adapter.

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