Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [heat]

Thermal energy; where it comes from, and how to keep it from damaging components

Heat in an electrical system might be caused by resistive losses or inductive heating. It can be dissipated through various forms of heatsink, including passive, forced-air, or liquid cooled.

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Heat output from a 200W electric radiator?

I am looking at installing an electric towel radiator. The heating element is 200W. Dose that mean that it would both: Use 200W of electricity. Provide 200W of heat output to the room.
user27511
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Heating an object with a circuit

I would like to make a circuit that can heat up an object to a very high temperature, similar to an electric griddle or coffee cup warmer. What kind of heating elements do they typically use and where can I buy them? They should be pretty easy to…
PICyourBrain
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Can electronics survive in cooking oil?

I came across this image, showing an apparently working motherboard soaked in cooking oil, using the heat from the electronics to deep fry potatoes. Like most of the internet, the content is of course not trustable. That is why I am asking this…
Shahbaz
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Why are coils of wire used in heating vs a straight wire?

Attached to this you will find a picture of a bathroom heating element. I noticed that the wires that emit heat are coils. From what I understand this effectively makes them inductors. Why is an inductor preferred over a long straight wire?
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Creating tiny heater for ant farm

Problem description I have a small formicarium for ant keeping, it is basically a tiny glass tank with inside dimensions of 20cm x 10cm x 2cm, filled with sand or soil. Ants I am keeping, like to dwell in the nature under rocks, which are heated by…
Mireczek
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Is DC heating faster than AC heating?

If I have a 120V @ 50Hz AC heater rated at 750W, and I run it using 120V DC, will the DC heat it faster, and why? (Assuming I could get a clean 120V DC power source).
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Why can't my kiln reach the needed temperature?

I'm building an electric kiln to melt metals like lead aluminum, and maybe even copper. I have no experience or professional knowledge on the subject. I want to be able to reach at least 1100°C but currently, it reaches no more than about 150°C. I…
Lidor shimoni
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Do flashlight LEDs normally run hot?

I own a Mini Maglite Pro AA and the chip has a habit of getting really hot. I lubricate and seal every threaded part with Vaseline.
Kevin Huberty
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Using a Steel Wire as the Heating Element

I'm new to electricity but have a basic understanding of circuit theory. I came across this video using what appears to be a steel wire (looks like >0.5mm) as the heating element of a homemade hot glue gun. youtube video The key point is the steel…
JavaMan
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What does a beginner need to know to build a programmable heater based on resistance heating?

To build a programmable deep fryer, as a learning project for more serious checmical reactors, I need to build a programmable heat source that can be controlled in response to sensor readings and a schedule. I'm a programmer and I have some…
Hanno Fietz
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Would running a heater for 10 seconds on then 10 seconds off be the same as alternating on and off every 1 second for 20 seconds?

Just as the title implies... I'm curious whether given a heater is on for exactly 1/2 of a period of time does the frequency of the heater turning on and off impact the net result of heat created? For instance if it was on for 10 seconds and off…
Inc1982
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Is a resistive coil the most effective heating method for a cylinder in terms of power consumption?

I am trying to find the most power efficient method for heating a metal tube in order to heat up the airflow within it. I came across the Minco mica heater but when I talked to another engineer they said it would be just as effective to simply wrap…
Secundus
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Generating heat?

I'm an electronic enthusiast (unfortunately I don't have much knowledge on the subject past basic components and volts, current, watts, etc) and I am wanting to know what the best/simplest method would be to generate heat (A noticeable amount from…
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Running a 230V heating element using 120V

Would a heating element that is rated at 3000W at 230V actually heat properly if the element was powered by 120V only? My hope is that it will just take longer to hear up, but worry is it can't get hot enough.
Casey Gregoire
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Wattage needed for heater to heat up a filament dryer

I am going to DIY a filament dry box. I am going to use a 50L container and a 30W/24V kapton heater. Using the formula Q = mCp(Tf - Ti), with m = 64.65g (50L of air, from https://www.aqua-calc.com/calculate/volume-to-weight), Cp = 1 g/j/K (from…
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