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.
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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 ...
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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.
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I'd like to ...
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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, ...
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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 ...
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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 ...
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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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. ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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:
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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 ...
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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.
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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 ...
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Peltier not cooling
I am looking for a little help as I am trying to make a small Peltier cooler and having a little trouble. FYI I have very little idea on what I am doing just got an idea off of youtube and gave it a ...
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How to estimate thermal impedance of a closed aluminum chassis?
I am contemplating whether or not I need chassis perforations for heat dissipation in a project. The box is roughly 440 mm wide, 280 mm deep and 85 mm high (2 rack height units aluminum enclosure.)
...
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Attach heat sink to cpu cooler in order to decrease CPU temperature
The best SMALL FACTOR cpu cooler that I have found so far is this one:
I am building a portable PC; therefore, the smaller the better. I have already checked the specifications and that cpu Noctua ...
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How can I calculate the power needed to increase/decrease the temperature of an object by x degrees when using a Peltier module?
I am working on a cooling system using 4 Peltier modules. I would like to somehow determine the power I need to reduce the temperature of the object attached to the Peltier module by x degrees Celsius....
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How to add 12V cooling fans to existing 48V circuit?
I have a 48V stepper running off a 240W supply, max current of the drive is ~4A. I am looking to add an 80mm cooling fan to this circuit. I know 48V fans exist, but 12V are more widely available and ...
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Reduce cooling power of refrigerator [closed]
I have a refrigerator which I want to use to store electrical device (I don't want them to get hot). I have successfully drilled a hole through the refrigerator door so that I can supply the ...
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I need more information about PowerPAK-SO8 thermal properties than i can find online
There are these MOSFETs in PowerPAK-SO8 (Vishay) package (or SuperSO8 for Infineon). I used to cool them from the outside, attaching a heatsink to the black (plastic? ceramic?) case worked pretty well....
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Why aren't current CPUs designed for more powerful cooling systems? [closed]
Chips on the present can't get smaller, higher speeds and voltages increase heating, so why don't CPU manufacturers aim for more powerful cooling systems instead of looking for parallelization?
We are ...
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How to test a Peltier module TEC1-12705 to determine if it works as intended?
Background:
The module comes from a 70W mini-cooler which doesn't really cool anymore. I took it apart and got the module out, I could read the model TEC1-12705 from the module itself. The ...
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Why does reciprocating compressor's motor starting winding have high voltage than running winding
I want to know why the starting winding of (2 ton) reciprocating compressor's motor have high voltage than running winding? I have attached the voltage that I have captured from oscilloscope.
This ...
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