I get it you are using waste heat from the motor to keep it dry.
maybe a very slow 20 or so rpm would also keep the prop clean.
The downside is it seems needlessly complicated to avoid using a 60 watt bulb.
mike
--- In electricboats@yahoogroups.com, "matwete@comcast.net" <matwete@...> wrote:
>
> You still haven't made your case...although I could have missed something in what you've written, it seems to me that you mentioned your 60 watt motor power suggestion then abandoned explaining how this 60watts would achieve the original goals.
>
> From my HTC Sensation 4G on T-Mobile. The first nationwide 4G network
>
> ----- Reply message -----
> From: "Kevin Pemberton" <pembertonkevin@...>
> To: <electricboats@yahoogroups.com>
> Subject: [Electric Boats] Think inside the box revisited
> Date: Fri, Dec 28, 2012 7:11 am
> Hi all,
>
>
>
> In a previous post I suggested running your motor at, well 60w( I guess
>
> a mistake) and it was taken wrong. Mostly it was taken wrong because I
>
> did a poor job of stating my case so I will try again.
>
>
>
> When I stated think inside the box Myles, returned with "while I was
>
> thinking outside the box". I must say I meant think inside the box. I
>
> have a simple 750w inverter in my rig. When I get up in the morning and
>
> the temp inside is below 50 deg F. the inverter will not work. I have
>
> two options. One is to start the fire and wait an hour for the inverter
>
> to warm to it's operating temp, or turn it on with a 5w load(an LED
>
> light rope that tells me it is working again) and wait 5 minutes to use
>
> it. The efficiency of the inverter is quite good and it uses slightly
>
> more than the LED I am plugging into it, but the temp of the mosfet tech
>
> inside reaches at least 15 deg above ambient in no time.
>
>
>
> On the other side of the stick the ambers inside the stove I measured at
>
> around 1000 deg with inferred thermometer. The stove sides measured 350.
>
> deg. The shield around the stove measures 175 deg. and the wall 74 deg.
>
> It takes the house over an hour to warm to 78 deg if it ever does
>
> without a fan. Another example of internal heat vs. applied heat is the
>
> body. internal temp 98.6 deg. Because it is so efficient it does little
>
> to heat the house in winter but must be considered in the summer if A/C
>
> is used. Although it doesn't waist much energy in comparison to work, it
>
> is able to maintain it's operating temp with some insulation. If placed
>
> next to another body on a cold night, it will help keep optimum temp in
>
> both bodies, but not with much air space between them.
>
>
>
> Applying heat is inherently inefficient. Pot skirts help when heating
>
> with applied heat on a stove, but nothing works as well as internal
>
> heat. For this reason when electric stoves came out, GE also offered
>
> inductive heating stoves. Because they limited cookware options, they
>
> were not to popular. Industry sometimes uses inductive heating to bend
>
> large tubes. In motors inductive heat is the enemy. Laminates are used
>
> to reduce the effect thus increasing efficiency but the losses are not
>
> eliminated and fans are used to control it. It is for this reason
>
> thinking inside the box(motor) is not such a bad Idea. As for the
>
> controller I just stated my case with the inverter example.
>
>
>
> I hope I better stated my case this time. All my previous statements in
>
> my other post still apply.
>
>
>
> Kevin Pemberton
>
>
>
> P.S. The incubator purchased at a hospital auction uses applied heat in
>
> the form of a 160w light. Also not a bad idea I just felt there was a
>
> better one.
>
>
>
> --
>
> Committing murder in exchange for lifestyle
>
> makes you a "thug" not a "Rights Activist"
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (2) |
No comments:
Post a Comment