Questions tagged [cooling]
Questions regarding the cooling of electronics. Varies based on needs, can include fans, heatsinks, proper ventilation, peltiers, or PCB design and mounting. Could also refer to cooling applications, such as freezers in industry. Repair questions for cooling applications will most likely be closed if outside the scope of the site and FAQ: in this case, try DIY.StackExchange.com.
212 questions
8
votes
3
answers
1k
views
Any additional advantage to keeping mosfets cool?
I know there is nothing to worry about if the operating temperature of a mosfet is under 100 degree C and manufacturers usually don't bother to install a heatsink if the mosfet is operating under this ...
- 131
0
votes
1
answer
63
views
2-stages TEC1-12706, heats instead of cool [closed]
I have the following setup: 2 TEC1-12706 stacked with hot side up and cold side down. I cool the hot side with a big heatsink and the cold side with water cooling. All system is clamped with 6 screws ...
- 1
0
votes
1
answer
60
views
Can heat sinks and/or heat pipes be retrofitted onto an existing electronic device?
I have a USB hub that is going into an additional enclosure that is fairly airtight. This USB hub is only rated for 0C to 40C operational, however it will need to survive hotter and colder ...
0
votes
2
answers
125
views
Heatsink can cause a shortcircuit what kind of problem occurs?
I'm not sure what will happen in this kind of scenario I'll share the photo of two diodes and basic connections below.
These two diodes tab points are actually connecting same node because of tab is ...
- 27
0
votes
1
answer
38
views
Thermoelectric cooler control point
The two operating hot side temperatures in the Peltier module data sheets are 27° and 50°. When connecting the thermoelectric cooler, how do I get the device to operate at a specific hot side ...
4
votes
1
answer
1k
views
Why is my Peltier module hot on both sides?
I've bought a TEC-12706 and used a 12V battery. I attached heatsinks and fans on both sides. The two sides get very hot as soon as I apply electricity to it.
- 49
6
votes
3
answers
1k
views
Cooling fan direction
I am building a temperature controller. The controller is built in a metal rack mount chassis. The components inside the controller generally consist of ACDC power supplies, an arduino and small ...
- 156
3
votes
2
answers
985
views
Light emitting transistors on chip to reduce heat
Could the same principle of LEDs be applied to chip (silicon or gallium) design to shift the infra-red heat towards the blue range then direct it away fromt the chip with fiber to allow the chip to ...
- 51
2
votes
2
answers
730
views
Cooling IAUC90N10S5N062 MOSFET from the top
I design a sync - buck converter, and I need to cool down my top side and bottom side MOSFETs. For mechanical reasons, it is easier for me to place a heat sink on top of plastic housing of MOSFETs (...
- 21
0
votes
1
answer
181
views
Peltier cooling a 4 cubic foot mini fridge
After doing a fair amount of research I figure I should ask knowledgable people on this topic. I do know that sadly Peltiers are not that efficient.
The problem at hand, I have a off grid solar ...
0
votes
1
answer
83
views
Peltier-based liquid cooling system
I-m doing a liquid-cooling project for fun, and, well powering it and cooling the hot side seems borderline impossible. I need some help.
To clarify. This is literally only to cool water, and not to ...
0
votes
1
answer
77
views
Open drain input that switches additional circuitry on
I want to create a active cooling for power supply when charging a battery with BQ24610 IC.
BQ24610 has open drain pin "STAT1" that switches on when battery is being charged.
*
I'd like to ...
- 157
0
votes
3
answers
146
views
Testing component temperature with IPA and thermal shock
Not infrequently a question will be asked on this site about components that are hot to the touch. I generally consider hot to the touch to be about \$140^{\circ}\$ F or \$60^{\circ}\$ C. While I, ...
- 27.8k
1
vote
2
answers
127
views
Peltier linearity and equalizing control of heating and cooling directions
I need to change between heating and cooling with a Peltier, controlling this with PID.
I've read a ton of information on Peltiers, looked at their datasheets and despite of this, I still cannot ...
- 79
0
votes
2
answers
1k
views
PID control of a reversible Peltier (using Arduino PID_V2 library)
I have a box of water, which temperature I have to regulate to a ramping setpoint which could go both below and above the ambient temperature. So I have decided to use a Peltier for both cooling and ...
- 79
0
votes
1
answer
112
views
How much pressure can typical TEC modules withstand?
Since I have not found an answer online. Nor any data sheets specifying, I can conduct my own test. But why not then post it online for others to see, I'm sure others will be searching it in a ...
1
vote
1
answer
90
views
Will a copper cooling loop affect a DC motor?
I would like to add external water cooling to an air-cooled brush-type permanent magnet DC motor. My first inclination is to coil soft copper fridge line around the motor a few times, attach a pump, ...
- 115
5
votes
4
answers
1k
views
Looking for ideas to about cooling multiple MOSFETs in TO-247 packages
I am designing a device based on TO-247 MOSFETs. The power is pretty high - about 50W per package, so it's going to be either water-cooling or something big with fins and fan. All is great, except ...
- 1,395
0
votes
1
answer
327
views
Thermally insulating peltier cell [closed]
I'm trying to build a small cloud chamber using peltier cells. I've been using a TEC2 25408 and a cooler master 412S. So far I've tried to measure the lowest temperature the peltier can reach by ...
- 311
0
votes
1
answer
589
views
Peltier cooling with a fan
I'm not sure if this is the right section to ask this question (or if I should rather have posted it on Physics stack exchange). Anyway, I'm trying to build a cloud chamber that relies on Peltier cell ...
- 311
1
vote
1
answer
121
views
How small can an inverter air conditioner be?
I am making a small temperature controlled environment in a 35x35x16cm plastic box. The ambient temperature of the room will be around 25° C, but I want to see how my electronics behave/shift their ...
- 3,620
1
vote
1
answer
146
views
How to choose a Peltier module and heat sink to cool a MOSFET down to -40°C? [closed]
I need to cool a MOSFET down to -40°C, but I really know nothing about thermal devices.
Could anyone teach me how to calculate the specific parameters that can help me choose the right Peltier module ...
- 11
1
vote
1
answer
105
views
How do you know if you need active cooling? [closed]
So, I have essentially a door lock in a box; a generic 60kg electromagnet (example), power supply (IRM-10-12) and control relay (G5LE-1A4). The electromagnet claims 150 mA, the relay is ~35 mA, and ...
- 592
1
vote
0
answers
179
views
Cooling with salt water
This might not be a strictly EE question, but I figure people here have experience.
How can I arrange water cooling of power electronics with sea salt water?
There will have to be certain filters to ...
- 1,395
6
votes
3
answers
8k
views
Electrical cabinet - cooling fan on top or bottom? [duplicate]
I have a medium sized electrical cabinet (1100mm wide x 400mm deep x 1100 mm tall) and I am installing 2 cooling vents / fans in the top and bottom opposite corners.
I am only using 1 filtered fan and ...
- 63
0
votes
1
answer
76
views
TECs: parallel or series? [closed]
My project is regarding the cooling effect of TECs. I am from a mechanical background.
My question is: what happens when TECs are connected in series or in parallel? If one configuration is better ...
1
vote
1
answer
217
views
Cell heat generation calculation
I am trying to calculate the heat generation by joule heating due the internal resistance of a Sony US18650VTC6 battery cell during its discharge (Pheat = R·I2). We need to calculate the heat ...
- 13
0
votes
2
answers
3k
views
How do I convert generated cooling capacity in kW to kWh?
I have to program a relatively simple program so I can display values on dashboard representing the part kWh a system is responsible for generating. This will be represented as a percentage.
I have a ...
- 1
1
vote
1
answer
81
views
Cooling issue with small 0606 SMD LED
I recently purchased IR LED which comes in 0606 package.
LED is of 3W (1A at 3.3v according to datasheet) and certainly require cooling but the problem is that it does not have any space for cooling. ...
- 525
0
votes
1
answer
87
views
Adding coolant to consumer PSU brick?
Delete if repeat of What dielectric liquids can be used as coolants?.
I got a cheapo 42v PSU to charge my skateboard. It gets quite hot, and I was thinking of injecting some Vasaline in there. Is this ...
- 135
0
votes
1
answer
967
views
What is the correct size of fuse for a Igloo Iceless cooler? DC 12v 55w, Stock Fuse 250V 7.5A [closed]
I would like to know if the stock fuse is too big for the cooler, because the original cable to come with the cooler melted at the 12v plug. The plastic around the tip was melted to the point the tip ...
- 1
1
vote
1
answer
501
views
Optimizing Peltier water cooler set up
Application
20 gallon aquarium cooler
Ambient temp: ~22C
Tank target temp: ~17C
Tank houses an axolotl and needs to be kept at cooler temperatures then currently in the basement.
Current Peltier Set ...
- 13
0
votes
0
answers
136
views
How to maximize heat dissipation on Peltier tiles
I am not an electrical engineer by any stretch of the imagination, but I do like to tinker.
I am building a liquid cooling ramp (also known as an ice luge) liquid gets poured into the top of the ...
0
votes
0
answers
61
views
Gasoline generator + Peltier configuration
I have a DIY cooler box with Peltier element 12V/3A/27 watts and want to connect via power supply to gasoline generator with output 600W at 5A max.
Would that be a problem and not supply my Peltier ...
0
votes
1
answer
169
views
TEC cold side temperature decreases, then increases rapidly [closed]
first post to this stack exchange.
Self teaching on TEC circuits. I bought a diymore TEC1-12706 12V 60W 6A. Note no heat sink installed on the TEC. To test the TEC I put together a series circuit as ...
2
votes
2
answers
6k
views
Can the polarity of a 12V brushless CPU fan be reversed?
Can the polarity of standard CPU 12VDC brushless fan be reversed? For my application it is fine if the fan is not broken afterwards. Please see the image of the fan below:
- 377
0
votes
1
answer
219
views
Peltier device stopped working
The peltier device worked well when i submerged the hot side in a frozen alcoholic gel, but then when i unplugged it from power and washed the device with water it stopped working. It doesn't get hot ...
-1
votes
1
answer
534
views
What wire size to be used for Peltier cooling
I'm making a project with three Peltier in parallel (12V & 6A) each (TEC 12706) for cooling.
I would just like to know the wire size to be used in (AWG or mm2), for running project smoothly.
- 11
0
votes
0
answers
114
views
Peltier stopped working
I am creating a sort of food cooler using a tec1-12706 peltier element since i figured the casing where the food goes in is already made of an heat/cold conductive metal. The cold side was not ...
- 1
1
vote
5
answers
627
views
Are there water heating elements that literally explode when turned on dry?
When I grew up these things were pretty commonplace:
In case you've never seen one, it's a very primitive water heater that you simply place inside a pot of water (or a jar, or even a cup of tea-to-...
- 765
2
votes
0
answers
70
views
Electric shock through thick rubber tube filled with coolant and carrying a high voltage wire
I have two Litz wires coming out of a coil. The coil is driven with short pulses of 20 kHz sinosoidal voltage with a peak of 1.4kV. Each Litz wire is insulated by 3 thin layers of mylar sheets in ...
- 31
4
votes
4
answers
250
views
Are solar panels ever used to remove energy?
Solar panels convert energy from the sun into electrical energy. Following the first law of thermodynamics, this means they remove some of the solar energy that would otherwise most likely be absorbed ...
2
votes
2
answers
497
views
Is it safe to connect metal body capacitors with a metal heatsink?
I have multiple metal case capacitors that I need to cool. The thermal tape I use is conductive (carbon based). Also larger heatsink on the left might touch capacitors on the left side. The question ...
2
votes
1
answer
64
views
How can the efficiency of LED emitters be approximated?
The data sheet usually indicates the power consumed and the luminous flux in lumens. The luminous flux per watt can be calculated from this, but this does not allow any direct statement about the ...
- 317
1
vote
0
answers
234
views
Cooling 1.5 cu ft with a TEC1-12715 Peltier
I'm trying to modify a standard cooler (about 1.5 cu ft) so it no longer requires ice. I want to get the interior to 35 - 40F assuming the ambient temperature is about 75-80F. However, I don't have ...
- 11
0
votes
1
answer
134
views
Safe to run 2N2222A at 0.4 W? possible NPN alternatives to 2N2222A
The datasheet for my 2N2222A claims it can run at 0.5 W. I am running it at nearly .4W. My casing has good ventilation via a large fan. Should I search for a component which can handle more power, or ...
- 91
0
votes
2
answers
301
views
Using TEG to generate electricity for cooling car interior parked in sun
I am working on how can I cool down or normalise interior temperature of cars parked in sun for too long as they get real hot. So I thought if this could be done by thermoelectric generators. I don't ...
1
vote
3
answers
781
views
Safe to run a 1/2 watt resistor at 0.4 watts in enclosed housing?
I have a circuit that dissipates 0.4 watts through a 1/2 watt resistor. It gets quite hot to the touch. Every other component in the system is cool. I am just trying to make sure this is safe in a ...
- 91
0
votes
1
answer
58
views
Power supply rated for "140 watts with natural convection" - Does it need a fan?
In the data sheet for my CUI VOF-225C power supply, under mechanical, it is mentioned that :
cooling - natural convection (no integrated fan)
Does this mean I do not need to run a fan with my power ...
- 91
0
votes
3
answers
659
views
Heatsink needed to keep my resistor from damaging due to heat
I am looking to find an appropriate range of heatsink selections to maintain my resistor from damage due to heat. I am using a flat plate (SS) resistor from ARCOL (TFBR900). It is rated for a 900 ...
- 3