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Groups > sci.electronics.design > #447363 > unrolled thread
| Started by | rickman <gnuarm@gmail.com> |
|---|---|
| First post | 2017-02-11 22:02 -0500 |
| Last post | 2017-03-01 17:33 -0800 |
| Articles | 20 on this page of 92 — 24 participants |
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Window Heater rickman <gnuarm@gmail.com> - 2017-02-11 22:02 -0500
Re: Window Heater bill.sloman@ieee.org - 2017-02-11 20:57 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 01:02 -0500
Re: Window Heater whit3rd <whit3rd@gmail.com> - 2017-02-11 23:07 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 03:52 -0500
Re: Window Heater whit3rd <whit3rd@gmail.com> - 2017-02-12 18:32 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 21:42 -0500
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-13 10:04 -0600
Re: Window Heater makolber@yahoo.com - 2017-02-13 10:17 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-13 15:30 -0500
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-13 15:39 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-13 20:28 -0500
Re: Window Heater krw@notreal.com - 2017-02-13 20:48 -0500
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-13 13:47 -0800
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 06:56 -0800
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-14 07:17 -0800
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 13:20 -0800
Re: Window Heater George Herold <gherold@teachspin.com> - 2017-02-14 16:17 -0800
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-14 16:28 -0800
Re: Window Heater George Herold <gherold@teachspin.com> - 2017-02-14 17:42 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 21:18 -0500
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 19:20 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 22:42 -0500
Re: Window Heater George Herold <gherold@teachspin.com> - 2017-02-15 06:51 -0800
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-15 06:06 -0800
Re: Window Heater George Herold <gherold@teachspin.com> - 2017-02-15 06:54 -0800
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-15 09:15 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-15 15:02 -0500
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-15 16:38 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-15 19:50 -0500
Re: Window Heater Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2017-02-17 11:18 +0000
Re: Window Heater Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2017-02-16 08:28 +0000
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 14:07 -0500
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 12:57 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 17:32 -0500
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 19:12 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 14:16 -0500
Re: Window Heater dagmargoodboat@yahoo.com - 2017-02-14 12:53 -0800
Re: Window Heater John S <Sophi.2@invalid.org> - 2017-02-14 16:14 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 17:35 -0500
Re: Window Heater John S <Sophi.2@invalid.org> - 2017-02-15 10:45 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-15 15:06 -0500
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-15 16:46 -0500
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 17:34 -0500
Re: Window Heater bill.sloman@ieee.org - 2017-02-12 04:57 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 18:19 -0500
Re: Window Heater Winfield Hill <hill@rowland.harvard.edu> - 2017-02-12 10:42 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 18:30 -0500
Re: Window Heater Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-02-12 08:45 +0000
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 03:57 -0500
Re: Window Heater Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-02-12 09:34 +0000
Re: Window Heater Jon Elson <elson@pico-systems.com> - 2017-02-11 23:52 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 01:07 -0500
Re: Window Heater Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2017-02-14 10:40 +0000
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 06:00 -0500
Re: Window Heater John S <Sophi.2@invalid.org> - 2017-02-14 16:17 -0600
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-14 14:28 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-14 17:36 -0500
Re: Window Heater Mikko OH2HVJ <mikko.syrjalahti@nospam.fi> - 2017-02-12 14:54 +0200
Re: Window Heater Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2017-02-12 08:56 -0700
Re: Window Heater Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-02-12 20:14 +0200
Re: Window Heater Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-02-11 00:30 -0500
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 18:56 -0500
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-12 06:35 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 19:01 -0500
Re: Window Heater "dcaster@krl.org" <dcaster@krl.org> - 2017-02-12 17:29 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 21:37 -0500
Re: Window Heater Jon Elson <jmelson@wustl.edu> - 2017-02-13 15:08 -0600
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-13 13:32 -0800
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-12 08:20 -0800
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-12 11:48 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 19:03 -0500
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-13 09:58 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-13 15:33 -0500
Re: Window Heater Jon Elson <jmelson@wustl.edu> - 2017-02-13 15:10 -0600
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-13 13:36 -0800
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-13 15:40 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-13 20:34 -0500
Re: Window Heater krw@notreal.com - 2017-02-13 20:52 -0500
Re: Window Heater Tim Wescott <seemywebsite@myfooter.really> - 2017-02-12 12:02 -0600
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 19:05 -0500
Re: Window Heater Tim Wescott <seemywebsite@myfooter.really> - 2017-02-14 17:49 -0600
Re: Window Heater bitrex <bitrex@de.lete.earthlink.net> - 2017-02-12 13:06 -0500
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-12 19:05 -0500
Re: Window Heater Clifford Heath <no.spam@please.net> - 2017-02-13 11:21 +1100
Re: Window Heater krw@notreal.com - 2017-02-12 19:28 -0500
Re: Window Heater Martin Riddle <martin_ridd@verizon.net> - 2017-02-12 21:57 -0500
Re: Window Heater "Tim Williams" <tiwill@seventransistorlabs.com> - 2017-02-13 10:01 -0600
Re: Window Heater Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-13 13:49 -0800
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-02-13 20:36 -0500
Re: Window Heater rickman <gnuarm@gmail.com> - 2017-03-01 19:44 -0500
Re: Window Heater George Herold <gherold@teachspin.com> - 2017-03-01 17:33 -0800
Page 4 of 5 — ← Prev page 1 2 3 [4] 5 Next page →
| From | Tauno Voipio <tauno.voipio@notused.fi.invalid> |
|---|---|
| Date | 2017-02-12 20:14 +0200 |
| Message-ID | <o7q8jm$9f9$1@dont-email.me> |
| In reply to | #447411 |
On 12.2.17 17:56, Jim Thompson wrote: > On Sun, 12 Feb 2017 14:54:33 +0200, Mikko OH2HVJ > <mikko.syrjalahti@nospam.fi> wrote: > >> rickman <gnuarm@gmail.com> writes: >> >>> I sit directly under a window much of the time (don't suggest I move, >>> there just isn't another practical option). When it is cold the >>> window has a draft that is downright brutal. I plugged the window >>> with a 3/4 inch piece of Styrofoam insulation and the draft persists >>> (sealed with tape around the edges). Seems even a couple of degrees >>> difference with the room air can create a draft that is cold enough to >>> be a bother. The wall around the window reads 66 degrees while the >>> Styrofoam reads about 64 degrees. >> >> The setup is not completely clear to me, is it a vertical window in the >> wall, horizontal in the roof or an angled one ? >> >> In Finland where we can have -30°C outside the typical solution is an >> argon filled 2 or 3 pane window with low-e coatings and a radiator under >> the window. The radiator creates an upward airflow, which keeps the >> feeling of draft away. Typical power is 50-200W or 500-700W if you heat the >> room with the same ones. > > It's been in the low 80°F's here the last few days, but colder today, > only 75°F (24°C >:-} > > I hate cold... that's why I came straight to Arizona upon graduating > from MIT in 1962. > > ...Jim Thompson It has been a quite mild winter here, only once near -20C. The temperature range I have seen here, on the south coast of Finland, is from -36C to +34C. -- -TV
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| From | Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> |
|---|---|
| Date | 2017-02-11 00:30 -0500 |
| Message-ID | <o7q8nj$9t6$1@dont-email.me> |
| In reply to | #447434 |
On 02/12/2017 01:14 PM, Tauno Voipio wrote: > On 12.2.17 17:56, Jim Thompson wrote: >> On Sun, 12 Feb 2017 14:54:33 +0200, Mikko OH2HVJ >> <mikko.syrjalahti@nospam.fi> wrote: >> >>> rickman <gnuarm@gmail.com> writes: >>> >>>> I sit directly under a window much of the time (don't suggest I move, >>>> there just isn't another practical option). When it is cold the >>>> window has a draft that is downright brutal. I plugged the window >>>> with a 3/4 inch piece of Styrofoam insulation and the draft persists >>>> (sealed with tape around the edges). Seems even a couple of degrees >>>> difference with the room air can create a draft that is cold enough to >>>> be a bother. The wall around the window reads 66 degrees while the >>>> Styrofoam reads about 64 degrees. >>> >>> The setup is not completely clear to me, is it a vertical window in the >>> wall, horizontal in the roof or an angled one ? >>> >>> In Finland where we can have -30°C outside the typical solution is an >>> argon filled 2 or 3 pane window with low-e coatings and a radiator under >>> the window. The radiator creates an upward airflow, which keeps the >>> feeling of draft away. Typical power is 50-200W or 500-700W if you >>> heat the >>> room with the same ones. >> >> It's been in the low 80°F's here the last few days, but colder today, >> only 75°F (24°C >:-} >> >> I hate cold... that's why I came straight to Arizona upon graduating >> from MIT in 1962. >> >> ...Jim Thompson > > > It has been a quite mild winter here, only once near -20C. The > temperature range I have seen here, on the south coast of Finland, > is from -36C to +34C. > Ah, the Finnish Riviera. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics 160 North State Road #203 Briarcliff Manor NY 10510 hobbs at electrooptical dot net http://electrooptical.net
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-12 18:56 -0500 |
| Message-ID | <o7qsl3$im3$1@dont-email.me> |
| In reply to | #447399 |
On 2/12/2017 7:54 AM, Mikko OH2HVJ wrote: > rickman <gnuarm@gmail.com> writes: > >> I sit directly under a window much of the time (don't suggest I move, >> there just isn't another practical option). When it is cold the >> window has a draft that is downright brutal. I plugged the window >> with a 3/4 inch piece of Styrofoam insulation and the draft persists >> (sealed with tape around the edges). Seems even a couple of degrees >> difference with the room air can create a draft that is cold enough to >> be a bother. The wall around the window reads 66 degrees while the >> Styrofoam reads about 64 degrees. > > The setup is not completely clear to me, is it a vertical window in the > wall, horizontal in the roof or an angled one ? Vertical window in wall. The draft is only a slight one as I have the window opening filled with 3/4 inch Styrofoam behind the two pane glass. > In Finland where we can have -30°C outside the typical solution is an > argon filled 2 or 3 pane window with low-e coatings and a radiator under > the window. The radiator creates an upward airflow, which keeps the > feeling of draft away. Typical power is 50-200W or 500-700W if you heat the > room with the same ones. A radiator under the window is what I am making. This room is a corner room with two windows, so they gave it two heating vents (forced air), but they are on either side of the *other* window as that's the direction the rafters in the floor run. To put one of the vents under this window would require the ducts to run under the rafters rather than between them lowering the ceiling further in the basement. -- Rick C
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| From | "dcaster@krl.org" <dcaster@krl.org> |
|---|---|
| Date | 2017-02-12 06:35 -0800 |
| Message-ID | <21a9ea36-c78b-40ec-a980-8a3790cce67d@googlegroups.com> |
| In reply to | #447363 |
On Saturday, February 11, 2017 at 10:02:37 PM UTC-5, rickman wrote:
> I sit directly under a window much of the time (don't suggest I move,
> there just isn't another practical option). When it is cold the window
> has a draft that is downright brutal.
> --
>
> Rick C
You might try something like a gutter to catch the cold air with a down spout to direct the cold air to the floor.
You could mock this up using some cardboard to determine if it is a satisfactory solution.
This would not use electricity for heating, which ought to be more economical.
If you use resisters you might mount them on some heat sinks.
Dan
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-12 19:01 -0500 |
| Message-ID | <o7qstq$jeh$1@dont-email.me> |
| In reply to | #447403 |
On 2/12/2017 9:35 AM, dcaster@krl.org wrote: > On Saturday, February 11, 2017 at 10:02:37 PM UTC-5, rickman wrote: >> I sit directly under a window much of the time (don't suggest I move, >> there just isn't another practical option). When it is cold the window >> has a draft that is downright brutal. >> -- >> >> Rick C > > You might try something like a gutter to catch the cold air with a down spout to direct the cold air to the floor. Lol. I did put a piece of cardboard in the window behind the slatted blinds with a gap at the edges. That sort of works, but I think trying to get an air draft to follow a gutter sideways to a downspout would be a trick. Another thing I thought of was to use the plastic window kits to make an airspace and just blowing air through it with a fan. That would make all the cold come out at the other end and with the air moving a bit faster than the draft, it wouldn't be cold. But I don't want to hear the durn fan. I guess I could use one that is very, very quiet. But that's too mechanical of a solution and the plastic is not very pretty. When I am done my window radiator will actually look pretty nice. -- Rick C
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| From | "dcaster@krl.org" <dcaster@krl.org> |
|---|---|
| Date | 2017-02-12 17:29 -0800 |
| Message-ID | <679953ad-6dfb-4a21-91a1-36aafa2b5959@googlegroups.com> |
| In reply to | #447482 |
On Sunday, February 12, 2017 at 7:01:47 PM UTC-5, rickman wrote:
>
> Lol. I did put a piece of cardboard in the window behind the slatted
> blinds with a gap at the edges. That sort of works, but I think trying
> to get an air draft to follow a gutter sideways to a downspout would be
> a trick.
I think it would work. But one experiment is worth a thousand guesses. which is why I suggested trying it using cardboard. It would only take about 15 minutes to try. the down spout would be a fairly long column of denser air which would help to increase the flow. I think one down spout at one end would work. But a down spout in the center would be better as would a down spout at each end.
Dan
>
>
> --
>
> Rick C
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-12 21:37 -0500 |
| Message-ID | <o7r62l$jq$1@dont-email.me> |
| In reply to | #447501 |
On 2/12/2017 8:29 PM, dcaster@krl.org wrote: > On Sunday, February 12, 2017 at 7:01:47 PM UTC-5, rickman wrote: > >> >> Lol. I did put a piece of cardboard in the window behind the slatted >> blinds with a gap at the edges. That sort of works, but I think trying >> to get an air draft to follow a gutter sideways to a downspout would be >> a trick. > > I think it would work. But one experiment is worth a thousand guesses. which is why I suggested trying it using cardboard. It would only take about 15 minutes to try. the down spout would be a fairly long column of denser air which would help to increase the flow. I think one down spout at one end would work. But a down spout in the center would be better as would a down spout at each end. I wanted to improve passive cooling of a computer once and constructed a test of the chimney effect. I positioned a 3 foot long 3 or 4 inch diameter aluminum tube over a 100 watt light bulb. I was not able to measure any movement of the air whatsoever. I tried the most sensitive thing I could find which was a bit of down on a thread. It never moved when held near the top of the chimney. I guess looking for air movement to cool a computer box is one thing and the slow, steady draft from a window is another. But the gutter would be in my way a lot of the time and I'm happy with the heater idea. Air movement is the key. But any air movement that hits me needs to be some degrees warmer than ambient. The only way to eliminate the draft I can conceive of is to heat the air next to the window so it isn't falling on me. I guess it isn't really even important for the heater to be right behind me. If it were higher up it would still stop the draft and perhaps even better, stopping it before it gets started. If it wasn't so expensive, I'd get a sheet of aluminum the full size of the window. Then it would approach the model of heating a space between the Styrofoam and the room. A piece 12 inches tall and as wide as the window is going to run $60 with shipping. I should try to find a local source. But I bet it costs more for the material. lol -- Rick C
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| From | Jon Elson <jmelson@wustl.edu> |
|---|---|
| Date | 2017-02-13 15:08 -0600 |
| Message-ID | <BvKdna7DnK3dvT_FnZ2dnUU7-InNnZ2d@giganews.com> |
| In reply to | #447512 |
rickman wrote: > I wanted to improve passive cooling of a computer once and constructed a > test of the chimney effect. I positioned a 3 foot long 3 or 4 inch > diameter aluminum tube over a 100 watt light bulb. I was not able to > measure any movement of the air whatsoever. I tried the most sensitive > thing I could find which was a bit of down on a thread. It never moved > when held near the top of the chimney. > The problem is the aluminum tube cooled the air. if you insulated the outside of the tube, it ought to have worked. I've certainly seen rising drafts cause by an old light bulb, no chimney needed. The tube might need a "hat" to make sure room air didn't plunge down the tube from the top. You want the whole column of air to rise in unison, not have bubbles of hot air tumbling in it. There were only passive cooling chimneys used a hundred years ago that had features like that. Jon
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| From | Lasse Langwadt Christensen <langwadt@fonz.dk> |
|---|---|
| Date | 2017-02-13 13:32 -0800 |
| Message-ID | <72a1e896-f8e2-455e-bd68-0ac63511096a@googlegroups.com> |
| In reply to | #447590 |
Den mandag den 13. februar 2017 kl. 22.08.25 UTC+1 skrev Jon Elson: > rickman wrote: > > > > I wanted to improve passive cooling of a computer once and constructed a > > test of the chimney effect. I positioned a 3 foot long 3 or 4 inch > > diameter aluminum tube over a 100 watt light bulb. I was not able to > > measure any movement of the air whatsoever. I tried the most sensitive > > thing I could find which was a bit of down on a thread. It never moved > > when held near the top of the chimney. > > > The problem is the aluminum tube cooled the air. if you insulated the > outside of the tube, it ought to have worked. I've certainly seen rising > drafts cause by an old light bulb, no chimney needed. > > The tube might need a "hat" to make sure room air didn't plunge down the > tube from the top. You want the whole column of air to rise in unison, not > have bubbles of hot air tumbling in it. There were only passive cooling > chimneys used a hundred years ago that had features like that. > > Jon the heat input and the chimney size need to match
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| From | Lasse Langwadt Christensen <langwadt@fonz.dk> |
|---|---|
| Date | 2017-02-12 08:20 -0800 |
| Message-ID | <ea3b9322-ed66-47e9-803d-40b72575f1d5@googlegroups.com> |
| In reply to | #447363 |
Den søndag den 12. februar 2017 kl. 04.02.37 UTC+1 skrev rickman: > I sit directly under a window much of the time (don't suggest I move, > there just isn't another practical option). When it is cold the window > has a draft that is downright brutal. I plugged the window with a 3/4 > inch piece of Styrofoam insulation and the draft persists (sealed with > tape around the edges). Seems even a couple of degrees difference with > the room air can create a draft that is cold enough to be a bother. The > wall around the window reads 66 degrees while the Styrofoam reads about > 64 degrees. > > I thought maybe the way to deal with the draft is to fight cold with > fire. So I bought a few power resistors in the metal cases that can be > mounted. I wired them in series and connected a variable supply as I > didn't know how much power I would need. Turns out a fair amount. If I > crank up the heat to around 30 to 40 watts with the resistors right > behind me on the sill of the window, the draft is gone. Not bad. > > But I was wondering how best to mount them. At this wattage they get > pretty warm, around 200 degrees! I was looking at sheet aluminum to > mount them to thinking just a couple/three inches of height would do the > job. But now I am wondering. I'm not sure a string of resistors along > a three inch wide sheet of aluminum would reduce the temps that much and > I'm not at all clear on how that might affect the airflow. > > I am thinking of a much wider sheet that would not get so hot. I am > also thinking it would help better to cut the draft by being larger. > I'm thinking it would give rise to a reverse draft and possibly require > less heat. > > So which is better, a small hotter heat source or a spread out lower > heat source. I suppose covering the entire windows with aluminum would > be the best approach, but I'm not ready to do that. So maybe 12 inches > of aluminum sheet? > put a lamp with an old-school incandescent in the windowsill ? :)
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| From | "Tim Williams" <tiwill@seventransistorlabs.com> |
|---|---|
| Date | 2017-02-12 11:48 -0600 |
| Message-ID | <o7q71m$3pf$1@dont-email.me> |
| In reply to | #447363 |
"rickman" <gnuarm@gmail.com> wrote in message news:o7oj4r$9vu$1@dont-email.me... >I sit directly under a window much of the time (don't suggest I move, there >just isn't another practical option). Alright, so move the window. <gdr> Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-12 19:03 -0500 |
| Message-ID | <o7qt0t$jeh$2@dont-email.me> |
| In reply to | #447430 |
On 2/12/2017 12:48 PM, Tim Williams wrote: > "rickman" <gnuarm@gmail.com> wrote in message > news:o7oj4r$9vu$1@dont-email.me... >> I sit directly under a window much of the time (don't suggest I move, >> there just isn't another practical option). > > Alright, so move the window. The other outside wall already has one. I could move it to one of the two inside walls. I can either have a view of my basement stairs or inside the shower. Both are pretty interesting options except for the view of the basement stairs. -- Rick C
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| From | "Tim Williams" <tiwill@seventransistorlabs.com> |
|---|---|
| Date | 2017-02-13 09:58 -0600 |
| Message-ID | <o7sl0i$bsr$1@dont-email.me> |
| In reply to | #447483 |
"rickman" <gnuarm@gmail.com> wrote in message news:o7qt0t$jeh$2@dont-email.me... > The other outside wall already has one. I could move it to one of the two > inside walls. I can either have a view of my basement stairs or inside > the shower. Both are pretty interesting options except for the view of > the basement stairs. So that leaves the shower view; but hey, someone might pay good money for that kind of view! ;-) Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-13 15:33 -0500 |
| Message-ID | <o7t53s$b4l$2@dont-email.me> |
| In reply to | #447560 |
On 2/13/2017 10:58 AM, Tim Williams wrote: > "rickman" <gnuarm@gmail.com> wrote in message > news:o7qt0t$jeh$2@dont-email.me... >> The other outside wall already has one. I could move it to one of the >> two inside walls. I can either have a view of my basement stairs or >> inside the shower. Both are pretty interesting options except for the >> view of the basement stairs. > > So that leaves the shower view; but hey, someone might pay good money > for that kind of view! ;-) But to get anyone to use the shower I'd have to install a shower curtain inside my shower stall. Actually, that would be pretty funny to have a window in the shower. What would people think? -- Rick C
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| From | Jon Elson <jmelson@wustl.edu> |
|---|---|
| Date | 2017-02-13 15:10 -0600 |
| Message-ID | <BvKdnanDnK0pvT_FnZ2dnUU7-ImdnZ2d@giganews.com> |
| In reply to | #447589 |
rickman wrote: > On 2/13/2017 10:58 AM, Tim Williams wrote: >> "rickman" <gnuarm@gmail.com> wrote in message >> news:o7qt0t$jeh$2@dont-email.me... >>> The other outside wall already has one. I could move it to one of the >>> two inside walls. I can either have a view of my basement stairs or >>> inside the shower. Both are pretty interesting options except for the >>> view of the basement stairs. >> >> So that leaves the shower view; but hey, someone might pay good money >> for that kind of view! ;-) > > But to get anyone to use the shower I'd have to install a shower curtain > inside my shower stall. > > Actually, that would be pretty funny to have a window in the shower. > What would people think? > A friend of mine just installed a BOAT PORTHOLE in their shower stall! (eBay purchase, of course!) I guess their back yard is pretty secluded, and out in the country. Jon
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| From | Lasse Langwadt Christensen <langwadt@fonz.dk> |
|---|---|
| Date | 2017-02-13 13:36 -0800 |
| Message-ID | <dba0918c-9eb0-46f7-850d-84625e186e2c@googlegroups.com> |
| In reply to | #447591 |
Den mandag den 13. februar 2017 kl. 22.10.19 UTC+1 skrev Jon Elson: > rickman wrote: > > > On 2/13/2017 10:58 AM, Tim Williams wrote: > >> "rickman" <gnuarm@gmail.com> wrote in message > >> news:o7qt0t$jeh$2@dont-email.me... > >>> The other outside wall already has one. I could move it to one of the > >>> two inside walls. I can either have a view of my basement stairs or > >>> inside the shower. Both are pretty interesting options except for the > >>> view of the basement stairs. > >> > >> So that leaves the shower view; but hey, someone might pay good money > >> for that kind of view! ;-) > > > > But to get anyone to use the shower I'd have to install a shower curtain > > inside my shower stall. > > > > Actually, that would be pretty funny to have a window in the shower. > > What would people think? > > > A friend of mine just installed a BOAT PORTHOLE in their shower stall! > (eBay purchase, of course!) I guess their back yard is pretty secluded, and > out in the country. > > Jon I seen several places with a window in the bathroom/shower, but it's been windows that are maybe 20cm tall and right under the ceiling so you can't really look in unless you are standing on a ladder, but it still lets light in
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| From | "Tim Williams" <tiwill@seventransistorlabs.com> |
|---|---|
| Date | 2017-02-13 15:40 -0600 |
| Message-ID | <o7t91u$rr0$1@dont-email.me> |
| In reply to | #447591 |
"Jon Elson" <jmelson@wustl.edu> wrote in message news:BvKdnanDnK0pvT_FnZ2dnUU7-ImdnZ2d@giganews.com... >> Actually, that would be pretty funny to have a window in the shower. >> What would people think? >> > A friend of mine just installed a BOAT PORTHOLE in their shower stall! > (eBay purchase, of course!) I guess their back yard is pretty secluded, > and > out in the country. > For when a bear wanders in, and you need to assert dominance by mooning it, even at your least convenient! Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Contract Design Website: http://seventransistorlabs.com
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| From | rickman <gnuarm@gmail.com> |
|---|---|
| Date | 2017-02-13 20:34 -0500 |
| Message-ID | <o7tmnp$8nh$1@dont-email.me> |
| In reply to | #447591 |
On 2/13/2017 4:10 PM, Jon Elson wrote: > rickman wrote: > >> On 2/13/2017 10:58 AM, Tim Williams wrote: >>> "rickman" <gnuarm@gmail.com> wrote in message >>> news:o7qt0t$jeh$2@dont-email.me... >>>> The other outside wall already has one. I could move it to one of the >>>> two inside walls. I can either have a view of my basement stairs or >>>> inside the shower. Both are pretty interesting options except for the >>>> view of the basement stairs. >>> >>> So that leaves the shower view; but hey, someone might pay good money >>> for that kind of view! ;-) >> >> But to get anyone to use the shower I'd have to install a shower curtain >> inside my shower stall. >> >> Actually, that would be pretty funny to have a window in the shower. >> What would people think? >> > A friend of mine just installed a BOAT PORTHOLE in their shower stall! > (eBay purchase, of course!) I guess their back yard is pretty secluded, and > out in the country. I lived in a rental house where the had a window in the bathtub. Made taking a shower other than private. -- Rick C
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| From | krw@notreal.com |
|---|---|
| Date | 2017-02-13 20:52 -0500 |
| Message-ID | <iio4ac5l1qhm9rqlbidiq6eos25htia4uu@4ax.com> |
| In reply to | #447589 |
On Mon, 13 Feb 2017 15:33:42 -0500, rickman <gnuarm@gmail.com> wrote: >On 2/13/2017 10:58 AM, Tim Williams wrote: >> "rickman" <gnuarm@gmail.com> wrote in message >> news:o7qt0t$jeh$2@dont-email.me... >>> The other outside wall already has one. I could move it to one of the >>> two inside walls. I can either have a view of my basement stairs or >>> inside the shower. Both are pretty interesting options except for the >>> view of the basement stairs. >> >> So that leaves the shower view; but hey, someone might pay good money >> for that kind of view! ;-) > >But to get anyone to use the shower I'd have to install a shower curtain >inside my shower stall. > >Actually, that would be pretty funny to have a window in the shower. >What would people think? It's not all that unusual. Our first house had a window over the master tub/shower. Our current house has a large window over the tub (but not the shower).
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| From | Tim Wescott <seemywebsite@myfooter.really> |
|---|---|
| Date | 2017-02-12 12:02 -0600 |
| Message-ID | <MdednZsgE8-BPj3FnZ2dnUU7-SOdnZ2d@giganews.com> |
| In reply to | #447363 |
On Sat, 11 Feb 2017 22:02:32 -0500, rickman wrote: > I sit directly under a window much of the time (don't suggest I move, > there just isn't another practical option). When it is cold the window > has a draft that is downright brutal. I plugged the window with a 3/4 > inch piece of Styrofoam insulation and the draft persists (sealed with > tape around the edges). Seems even a couple of degrees difference with > the room air can create a draft that is cold enough to be a bother. The > wall around the window reads 66 degrees while the Styrofoam reads about > 64 degrees. > > I thought maybe the way to deal with the draft is to fight cold with > fire. So I bought a few power resistors in the metal cases that can be > mounted. I wired them in series and connected a variable supply as I > didn't know how much power I would need. Turns out a fair amount. If I > crank up the heat to around 30 to 40 watts with the resistors right > behind me on the sill of the window, the draft is gone. Not bad. > > But I was wondering how best to mount them. At this wattage they get > pretty warm, around 200 degrees! I was looking at sheet aluminum to > mount them to thinking just a couple/three inches of height would do the > job. But now I am wondering. I'm not sure a string of resistors along > a three inch wide sheet of aluminum would reduce the temps that much and > I'm not at all clear on how that might affect the airflow. > > I am thinking of a much wider sheet that would not get so hot. I am > also thinking it would help better to cut the draft by being larger. I'm > thinking it would give rise to a reverse draft and possibly require less > heat. > > So which is better, a small hotter heat source or a spread out lower > heat source. I suppose covering the entire windows with aluminum would > be the best approach, but I'm not ready to do that. So maybe 12 inches > of aluminum sheet? Is it the window or the whole wall? I suspect the key idea is "heat output" if it's used properly. If you're dissipating 50W then you're dissipating 50W and that's your heat flux. If you spread that flux over a larger area the _temperature_ of your heating assembly will go down, but not the flow of heat. And, I suspect that as long as you maintain the heat output, spreading it out vertically to reduce the temperature won't change it's effect on the draft -- you just want to heat the air, you don't care if it happens over the space of 1/4 inch or ten inches. If you just can't get there from here, putting a strip of resistors inside a cage of chicken wire (or something more decorative) would work as well as what you have now, with less risk of injury. -- Tim Wescott Wescott Design Services http://www.wescottdesign.com I'm looking for work -- see my website!
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