The Naked Scientists
  • Login
  • Register
  • Podcasts
      • The Naked Scientists
      • eLife
      • Naked Genetics
      • Naked Astronomy
      • In short
      • Naked Neuroscience
      • Ask! The Naked Scientists
      • Question of the Week
      • Archive
      • Video
      • SUBSCRIBE to our Podcasts
  • Articles
      • Science News
      • Features
      • Interviews
      • Answers to Science Questions
  • Get Naked
      • Donate
      • Do an Experiment
      • Science Forum
      • Ask a Question
  • About
      • Meet the team
      • Our Sponsors
      • Site Map
      • Contact us

User menu

  • Login
  • Register
  • Home
  • Help
  • Search
  • Tags
  • Member Map
  • Recent Topics
  • Login
  • Register
  1. Naked Science Forum
  2. Non Life Sciences
  3. Technology
  4. What Is More Efficient..low heat & high speed...high heat & Low speed ?
« previous next »
  • Print
Pages: [1]   Go Down

What Is More Efficient..low heat & high speed...high heat & Low speed ?

  • 5 Replies
  • 7557 Views
  • 0 Tags

0 Members and 1 Guest are viewing this topic.

Offline neilep (OP)

  • Withdrawnmist
  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 20788
  • Activity:
    2.5%
  • Thanked: 55 times
    • View Profile
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« on: 17/02/2008 19:40:42 »
Dear Sirs, Madams, Not-Sure's,


See my fan heater ?

 [ Invalid Attachment ]

Nice eh ?...being delivered on Tuesday !

It's only going to be used in a small room so, what will be the best setting ?

Low speed but high heat ?....or low heat and fast speed ?

Does it make any difference ? (except for the noise)


I really wish I knew......I may cry myself to sleep if I don't find out !!


* 05240c.jpg (35.54 kB, 284x375 - viewed 907 times.)
Logged
Men are the same as women, just inside out !
 



Offline JimBob

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 6543
  • Activity:
    0%
  • Thanked: 8 times
  • Moderator
    • View Profile
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« Reply #1 on: 17/02/2008 21:23:27 »
Lower heat, faster speed. The power used by the coil is several orders of magnitude greater than the fan. Find out what is the least level of heat to keep you comfortable and the highest amount of fan speed that doesn't drive you nuts or blow your papers all over the place.
Logged
The mind is like a parachute. It works best when open.  -- A. Einstein
 

Offline neilep (OP)

  • Withdrawnmist
  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 20788
  • Activity:
    2.5%
  • Thanked: 55 times
    • View Profile
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« Reply #2 on: 17/02/2008 21:42:22 »
Quote from: JimBob on 17/02/2008 21:23:27
Lower heat, faster speed. The power used by the coil is several orders of magnitude greater than the fan. Find out what is the least level of heat to keep you comfortable and the highest amount of fan speed that doesn't drive you nuts or blow your papers all over the place.


Thank you Jim.

 This is excellent news. Funny you should mention 'nuts '...as I shall indeed be drying those in front of it too !!....(not too close of course...that would be silly and wrong and I don't want to cook my nuts)
Logged
Men are the same as women, just inside out !
 

lyner

  • Guest
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« Reply #3 on: 21/02/2008 09:18:01 »
If  you start with a cold room and you need it to be warmed up to a comfortable level then the most efficient way to supply heat is at high power. The room will be losing heat as soon as you start any heater so it is better that you are actually in the room whilst it is warm. As soon as you leave the room, turn the heater off. This way you will lose the least amount of  heat for a given time of 'comfortable occupancy'.
There are, of course, other factors. If the room is very high then you  risk wasting a lot of hot air near the ceiling (losing heat and not keeping you warm), in which case, you may be better off with a lot of fan power to stir it all up.
But we all know about hot air on these forums. . .
Logged
 

Offline Pumblechook

  • Hero Member
  • *****
  • 569
  • Activity:
    0%
  • Thanked: 2 times
    • View Profile
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« Reply #4 on: 21/02/2008 10:39:27 »
2000 Watts is 2000 Watts and will heat up a room however it is produced  but  a fan heater heats  up room move evenly and 'apparently' more quickly.   1000 Watts will not reach the same temperature.

A non-fan heater tends to very hot close to it but cooler well away from it. 

Logged
 



lyner

  • Guest
What Is More Efficient..low heat & high speed...high heat & Low speed ?
« Reply #5 on: 21/02/2008 17:36:55 »
Many rooms would get too hot with a 2kW heater  running continuously. A thermostat would turn the heater off when appropriate. My argument is that the higher power could actually involve less loss  because of the greater lag in pre-warming the room with a smaller heater .
Of course, if you want to 'feel' warm very quickly,  a battery of radiant heaters can be very effective in some applications. For a broad source of radiant heat, the inverse square law doesn't apply.  The effect is more or less instant and, for a brief stay in the room, is good value as it doesn't involve heating the air or room contents, much.
It's a matter of horses for courses.
Logged
 



  • Print
Pages: [1]   Go Up
« previous next »
Tags:
 

Similar topics (5)

what is the most efficient, VGA/VGA cable or HDMI/VGA cable?

Started by myriamBoard Geek Speak

Replies: 15
Views: 12816
Last post 26/05/2010 09:15:39
by LeeE
Which is more efficient, a mechanical clock, or a digital clock?

Started by Brad Phipps Board General Science

Replies: 2
Views: 5386
Last post 11/05/2010 15:28:00
by graham.d
Which is more efficient: electric kettle, or gas stove kettle?

Started by SoniBoard General Science

Replies: 19
Views: 21919
Last post 19/05/2011 19:40:41
by CZARCAR
Are bird lungs more efficient than mammal lungs?

Started by Evan Stanbury Board Plant Sciences, Zoology & Evolution

Replies: 4
Views: 4935
Last post 17/10/2018 19:22:18
by Bored chemist
What is more energy efficient for heating water, an electric kettle or a stove?

Started by FutharkBoard General Science

Replies: 2
Views: 7869
Last post 10/06/2006 15:55:40
by daveshorts
There was an error while thanking
Thanking...
  • SMF 2.0.15 | SMF © 2017, Simple Machines
    Privacy Policy
    SMFAds for Free Forums
  • Naked Science Forum ©

Page created in 0.166 seconds with 48 queries.

  • Podcasts
  • Articles
  • Get Naked
  • About
  • Contact us
  • Advertise
  • Privacy Policy
  • Subscribe to newsletter
  • We love feedback

Follow us

cambridge_logo_footer.png

©The Naked Scientists® 2000–2017 | The Naked Scientists® and Naked Science® are registered trademarks created by Dr Chris Smith. Information presented on this website is the opinion of the individual contributors and does not reflect the general views of the administrators, editors, moderators, sponsors, Cambridge University or the public at large.