Re: [MBZ] old technology Some of it, I like...
Right, see the other post where I ponder attaching one to a reflector on the side of the lantern. The reflectors get pretty hot and with the heatsink off to the side as opposed to being right in the rising heat it should be more effective. -Curt From: fmiser via Mercedes To: mercedes@okiebenz.com Cc: fmiser Sent: Tuesday, August 9, 2016 2:43 PM Subject: Re: [MBZ] old technology Some of it, I like... > > > > Jim wrote: > > > > > > > > Peltier devices only work off the heat _differential_, so it > > > > needs ample access to 'cool', > > > Curt wrote: > > > > > > Right! They'll sit on top of the lantern with a big heatsink on > > > top of the device. > > fmiser wrote: > > > > That's good for the hot side. What about the cold side. > > > > It's not just a matter of getting it hot. One side hot, the other > > side cold - then you get current flow. So if you don't do > > something to keep the cold side cold, it won't work so well. > > > > Just having the cold side in the dark should give you a little > > difference. Better would be a big heatsink, with an insulated > > "wall" to keep the lantern heat/light off of it. > Curt wrote: > > Umm, on top of the lantern with a big heatsink on the top of the > device? Quoting myself, "Just having the cold side in the dark should give you a little difference." How do you expect that heatsink to dissipate it's heat? > I don't need a heatsink on the hot side, or rather the lantern's > own vent already is a heatsink on the hot side... I have said almost nothing about the hot side. Stick it as close to the lantern as you can without melting it. Done. I was referring to the COLD side needing a heatsink with an insulated wall to keep the lantern heat off of it. If you put a big, finned aluminum hunk, un-shaded, 1 cm further away from the lamp than the hot side of the peltier - how much cooler do you think it will be? What about after it's been there for 10 minutes? I'm presuming you are wanting sustained current - not just the first 30 seconds until the cold side warms up. That means the heat flowing through the peltier from the hot to the cold side will warm the cold side until there is little current flow. To keep generating electricity, that heat has to be removed from the cold side. A heatsink is a good choice for that job. But for it to work well, the has to be kept out of the heat from the lantern. That's why I mentioned an insulated wall. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
> > > > Jim wrote: > > > > > > > > Peltier devices only work off the heat _differential_, so it > > > > needs ample access to 'cool', > > > Curt wrote: > > > > > > Right! They'll sit on top of the lantern with a big heatsink on > > > top of the device. > > fmiser wrote: > > > > That's good for the hot side. What about the cold side. > > > > It's not just a matter of getting it hot. One side hot, the other > > side cold - then you get current flow. So if you don't do > > something to keep the cold side cold, it won't work so well. > > > > Just having the cold side in the dark should give you a little > > difference. Better would be a big heatsink, with an insulated > > "wall" to keep the lantern heat/light off of it. > Curt wrote: > > Umm, on top of the lantern with a big heatsink on the top of the > device? Quoting myself, "Just having the cold side in the dark should give you a little difference." How do you expect that heatsink to dissipate it's heat? > I don't need a heatsink on the hot side, or rather the lantern's > own vent already is a heatsink on the hot side... I have said almost nothing about the hot side. Stick it as close to the lantern as you can without melting it. Done. I was referring to the COLD side needing a heatsink with an insulated wall to keep the lantern heat off of it. If you put a big, finned aluminum hunk, un-shaded, 1 cm further away from the lamp than the hot side of the peltier - how much cooler do you think it will be? What about after it's been there for 10 minutes? I'm presuming you are wanting sustained current - not just the first 30 seconds until the cold side warms up. That means the heat flowing through the peltier from the hot to the cold side will warm the cold side until there is little current flow. To keep generating electricity, that heat has to be removed from the cold side. A heatsink is a good choice for that job. But for it to work well, the has to be kept out of the heat from the lantern. That's why I mentioned an insulated wall. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
> > > > Jim wrote: > > > > > > > > Peltier devices only work off the heat _differential_, so it > > > > needs ample access to 'cool', > > > Curt wrote: > > > > > > Right! They'll sit on top of the lantern with a big heatsink on > > > top of the device. > > fmiser wrote: > > > > That's good for the hot side. What about the cold side. > > > > It's not just a matter of getting it hot. One side hot, the other > > side cold - then you get current flow. So if you don't do > > something to keep the cold side cold, it won't work so well. > > > > Just having the cold side in the dark should give you a little > > difference. Better would be a big heatsink, with an insulated > > "wall" to keep the lantern heat/light off of it. > Curt wrote: > > Umm, on top of the lantern with a big heatsink on the top of the > device? Quoting myself, "Just having the cold side in the dark should give you a little difference." How do you expect that heatsink to dissipate it's heat? > I don't need a heatsink on the hot side, or rather the lantern's > own vent already is a heatsink on the hot side... I have said almost nothing about the hot side. Stick it as close to the lantern as you can without melting it. Done. I was referring to the COLD side needing a heatsink with an insulated wall to keep the lantern heat off of it. If you put a big, finned aluminum hunk, un-shaded, 1 cm further away from the lamp than the hot side of the peltier - how much cooler do you think it will be? What about after it's been there for 10 minutes? I'm presuming you are wanting sustained current - not just the first 30 seconds until the cold side warms up. That means the heat flowing through the peltier from the hot to the cold side will warm the cold side until there is little current flow. To keep generating electricity, that heat has to be removed from the cold side. A heatsink is a good choice for that job. But for it to work well, the has to be kept out of the heat from the lantern. That's why I mentioned an insulated wall. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
Umm, on top of the lantern with a big heatsink on the top of the device? Which I already wrote right above your reply. I don't need a heatsink on the hot side, or rather the lantern's own vent already is a heatsink on the hot side... -Curt From: fmiser via Mercedes To: mercedes@okiebenz.com Cc: fmiser Sent: Tuesday, August 9, 2016 1:27 PM Subject: Re: [MBZ] old technology Some of it, I like... > > Jim wrote: > > > > Peltier devices only work off the heat _differential_, so it > > needs ample access to 'cool', > Curt wrote: > > Right! They'll sit on top of the lantern with a big heatsink on > top of the device. That's good for the hot side. What about the cold side. It's not just a matter of getting it hot. One side hot, the other side cold - then you get current flow. So if you don't do something to keep the cold side cold, it won't work so well. Just having the cold side in the dark should give you a little difference. Better would be a big heatsink, with an insulated "wall" to keep the lantern heat/light off of it. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
> > Jim wrote: > > > > Peltier devices only work off the heat _differential_, so it > > needs ample access to 'cool', > Curt wrote: > > Right! They'll sit on top of the lantern with a big heatsink on > top of the device. That's good for the hot side. What about the cold side. It's not just a matter of getting it hot. One side hot, the other side cold - then you get current flow. So if you don't do something to keep the cold side cold, it won't work so well. Just having the cold side in the dark should give you a little difference. Better would be a big heatsink, with an insulated "wall" to keep the lantern heat/light off of it. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
I need to do that. Dunno, whats the burning temp of gasoline? I suspect its going to take some experimentation to find the best spot. Probably it'll work better in colder weather when theres a greater temperature differential. Actually just occurred to me they make reflectors that go on the side of the lantern to push light in one direction, the back side of one of those might be a good place for the peltier, it won't get super hot and the heatsink won't be above the lantern. Thats the worst part I think is that the heatsink is going to be in the heat... -Curt From: OK Don To: Curt Raymond ; Mercedes Discussion List Sent: Tuesday, August 9, 2016 12:18 PM Subject: Re: [MBZ] old technology Some of it, I like... How about using an IR thermometer to measure the temps, then place them in the most appropriate places? What is their operating temp range anyway? On Tue, Aug 9, 2016 at 10:48 AM, Curt Raymond via Mercedes wrote: Right!They'll sit on top of the lantern with a big heatsink on top of the device. I was worried about getting them hot enough but you've got me nervous they might get too hot. Maybe when I start I'll use a "big hat" Coleman and mount the device out toward the rim. You can just almost touch the outer rim without burning yourself while the very top of the vent is much too hot to touch. -Curt -- OK Don “Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of our people need it sorely on these accounts.” – Mark Twain"There are three kinds of men: The ones that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves."WILL ROGERS, The Manly Wisdom of Will Rogers2013 F150, 18 mpg2012 Passat TDI DSG, 44 mpg1957 C182A, 12 mpg - but at 150 mph! ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
How about using an IR thermometer to measure the temps, then place them in the most appropriate places? What is their operating temp range anyway? On Tue, Aug 9, 2016 at 10:48 AM, Curt Raymond via Mercedes < mercedes@okiebenz.com> wrote: > Right!They'll sit on top of the lantern with a big heatsink on top of the > device. > I was worried about getting them hot enough but you've got me nervous they > might get too hot. Maybe when I start I'll use a "big hat" Coleman and > mount the device out toward the rim. You can just almost touch the outer > rim without burning yourself while the very top of the vent is much too hot > to touch. > -Curt > -- OK Don *“Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of our people need it sorely on these accounts.”* – Mark Twain "There are three kinds of men: The ones that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves." WILL ROGERS, *The Manly Wisdom of Will Rogers* 2013 F150, 18 mpg 2012 Passat TDI DSG, 44 mpg 1957 C182A, 12 mpg - but at 150 mph! ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
Right!They'll sit on top of the lantern with a big heatsink on top of the device. I was worried about getting them hot enough but you've got me nervous they might get too hot. Maybe when I start I'll use a "big hat" Coleman and mount the device out toward the rim. You can just almost touch the outer rim without burning yourself while the very top of the vent is much too hot to touch. -Curt From: Jim Cathey To: Curt Raymond ; Mercedes Discussion List Sent: Tuesday, August 9, 2016 11:43 AM Subject: Re: [MBZ] old technology Some of it, I like... Peltier devices only work off the heat _differential_, so it needs ample access to 'cool', whatever that is in your design. Also, sufficiently high temperatures can kill them dead. You can't just put them in a hot place and watch the money roll in. -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
Peltier devices only work off the heat _differential_, so it needs ample access to 'cool', whatever that is in your design. Also, sufficiently high temperatures can kill them dead. You can't just put them in a hot place and watch the money roll in. -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
Funny you should post that. I just ordered parts to charge my cell phone based on the waste heat coming off a Coleman lantern. They already make a system to charge your phone off a wick lantern but a Coleman makes a lot more heat.I got 10 peltier devices on eBay from Guangzu Charlie for around $18, he's also sending me a USB voltage regulator. I'm debating if I need to make a custom vent (lid) for a lantern or if I could stick them right to and existing one. Should be a fun experiment anyway. -Curt From: Craig via Mercedes To: Mercedes Discussion List Cc: Craig Sent: Tuesday, August 9, 2016 9:17 AM Subject: Re: [MBZ] old technology Some of it, I like... On Mon, 08 Aug 2016 23:13:22 -0500 Curley McLain via Mercedes wrote: > Like a 110 200D or a 123 240D, or a 124 300D, or a 126 300SDL. > > http://www.popularmechanics.com/technology/g2729/9-pieces-of-obsolete-tech-that-just-wont-die/?mag=pop&list=nl_pnl_news&src=nl&date=080616 > http://www.popularmechanics.com/technology/gadgets/a22208/diy-waterwheel-phone-charger/ It's Just Not Camping Without a DIY Waterwheel to Charge Your Phone Craig ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] old technology Some of it, I like...
On Mon, 08 Aug 2016 23:13:22 -0500 Curley McLain via Mercedes wrote: > Like a 110 200D or a 123 240D, or a 124 300D, or a 126 300SDL. > > http://www.popularmechanics.com/technology/g2729/9-pieces-of-obsolete-tech-that-just-wont-die/?mag=pop&list=nl_pnl_news&src=nl&date=080616 > http://www.popularmechanics.com/technology/gadgets/a22208/diy-waterwheel-phone-charger/ It's Just Not Camping Without a DIY Waterwheel to Charge Your Phone Craig ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] old technology Some of it, I like...
Like a 110 200D or a 123 240D, or a 124 300D, or a 126 300SDL. http://www.popularmechanics.com/technology/g2729/9-pieces-of-obsolete-tech-that-just-wont-die/?mag=pop&list=nl_pnl_news&src=nl&date=080616 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
