The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
Subject: Re: Help creating a heating element from resistor.
Date: Sun, 8 Dec 2002 20:25:53 +0000 (UTC)
NNTP-Posting-Date: Sun, 8 Dec 2002 20:25:53 +0000 (UTC)
User-Agent: tin/1.5.14-20020926 ("Soil") (UNIX) (Linux/2.4.19 (i686))
> In article ,
> "George R. Gonzalez" wrote:
>> "Sam" wrote in message
>> > Hello,
>> > I'd like to create a small heating element running on as low a
>> > voltage/current as possible and heats up to about 250 deg C. I'd like
>> > to pump a fluid over it and have that fluid vaporize.
>> We need a bit more info. How much fluid do you want to vaporize
>> per unit time? What's the heat capacity of the fluid? What is its
>> boiling point temperature? What is its heat of vaporization?
>> Witht hat info we can calculate how many watts is required.
> I'm not quite sure what the flow rate will be yet, pretty low, I'll be
> using as small a pump as possible. Everything togeather should weigh
> 3oz or less and another 2oz of liquid, the 3oz includes a battery to run
> this on. The fluid is oil, don't konw what the heat capacity is, flash
> point is 240 deg F, API gravity is 38.3. I was looking at a site that
> carries Nichrome wire and they had some tables to help figure out what
> you need (http://www.wiretron.com/nicrdat.html). It looks like if I
> used AWG 40 wire I could get by with only needing to generate about 8
> watts which I could get from 2 1.2V batteries at 3 amps. Is Nichrome
> more efficient at generating heat from electricity then a resistor?
Why do you want to evaporate oil?
Off-hand, I'd say it's not going to happen, as the battery would be
http://inquisitor.i.am/ | mailto:firstname.lastname@example.org | Ian Stirling.
"An enemy will usually have three courses open to him. Of these he will
select the fourth." -- Helmuth von Moltke
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup