Questions tagged [cooling]

Questions regarding Cooling electronics. Varies based on needs, can include Fans, Heatsinks, proper ventilation, Peltiers, or PCB design and mounting. Could also refer to Cooling applications, like freezers in industry. Repair questions for Cooling applications will most likely be closed if outside the Scope of the Site and FAQ. Try DIY.StackExchange.com for those.

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54 views

Which aluminium extrusion for LED strips has better cooling?

I have a choice of two aluminium extrusions for LED strips. They have identical dimensions, except the one on the left has "wings" on both sides. They will be installed in free air, ...
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1answer
52 views

Cooling a box 1X2 m with TEC module [closed]

I want to know is possible cooling a box in 1 * 2 m size by peltier? please help me thanks
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1answer
46 views

Converting 3-pin brushless fan to 2-pin

I need to replace a 2-pin fan on my PSU unit. The fan is 40x40x20, DC12V, 0.15A. I am replacing the fan because the noise is unbearable, >75dB right next to it. Can I simply buy a 3-pin fan and ...
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2answers
39 views

Cooling circuit board for troubleshooting

I'm trying to troubleshoot an LCD TV. It turns off at random intervals I'm guessing as it heats up with use. I want to determine which PCB is failing with heat, and then even isolate the area on the ...
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2answers
411 views

Are fins necessary/required for cooling in a closed room

i am trying to design an efficient cooling solution for my project. I planned placing a IoT computer in an aluminum housing which is completely closed. In this case, do I really need fins and large ...
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1answer
47 views

Optimise Peltier cooling system: PWM or not?

SETUP I have a special test setup for some small circuits that should be cooled down (by air) in a closed box with Peltier elements. It mainly consists of 2 peltier elements (ET-127-20-15 from ...
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1answer
113 views

Does anybody know a better way to cool a heatsink that is not a fan? [closed]

I am designing a portable distiller powered by the sun. I will be heating the water with a heating coil and then when the water evaporates I will be collecting the stem in a metal tube(not sure what ...
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48 views

Peltier questions [duplicate]

Can you use both sides of a Peltier module to distill water? Using one side for heating and the other side for cooling? If so, what type of Peltier module do you need and can you make it solar powered?...
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3answers
68 views

Calculating PCB temperature increase

so I have created a PCB with a lot of components on it, its a rather large PCB, roughly 18cm x 19 cm. A lot of the components' datasheets (things like Resistors, Switches, capacitors, relays, CAN ...
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1answer
147 views

Can you desalinate or distill water with a Peltier module?

Can you use both sides of a Peltier module to distill water? Using one side for heating and the other side for cooling. If so what type of Peltier module do you need and can you make it solar powered? ...
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26 views

Can a faulty motor cause issues to another motor?

This is regarding the circuit of my 3D printer mainboard. I had an obersvation: It has a cooling fan (40X10 24V) which is having issues lately - it stops working sometimes, and when pushed to rotate, ...
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1answer
38 views

Transformer cooling difference between water cooling and air cooling [closed]

I just know air cooling method is cheaper than water cooling method. Please tell me what is the difference between air cooling and water cooling? And if you could please use some pictures to explain ...
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What is this spongy material?

Hi, while I am tring to repair electronic circuit. I'm encountering this sponge. I wonder what is this sponge? and can I find out what it is used for. I often see this in sensitive circuits like in ...
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44 views

Maximum temperature of an electric motor and proper cooling system

I have found an electric motor in my home and I want to estimate how much time it can operate until its temperature becomes too high and eventually build a cooling system for it (I have seen that ...
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2answers
35 views

thermal conductivity of a liquid cooler

I'm a high school student in a class called EDD, where we design a product and produce a prototype of said product. I have one issue though: My team bit off more than we could chew, and we have no ...
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1answer
124 views

Why does this AC axial cooling fan have 3 wires?

I'm restoring a 1970s HP Frequency Counter and went to replace the 110V AC tube axial cooling fan on the unit to discover that it has 3 wires. The original fan is a ROTRON 1 PH CAP 0.25MFD fan. I'm a ...
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1answer
79 views

Controlling a shaded pole fan via light dimmer switch? Which among these two fans are better for cooling?

I'm building a DIY lab round flask heater using a fiber glass 250mL GLAS-COL M102, 180 Watts heater mantle. The temperature will be controlled via a PID controller and a K-type thermocouple. Since the ...
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3answers
51 views

Air circulation and condensation in custom enclosures for outdoor project

I am designing 6 custom enclosures in mild steel to be placed outdoors for 5 months in London UK. They will be interconnected, only one will contains 4 power supplies, all with conformal coating and ...
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3answers
476 views

Using a small heatsink with a high power LED (50W)

Description I want to use a 50 Watt LED like this one (42mm*40mm) The space to integrate this component is limited. I have only 55mm*55mm*30mm in total. So the LED + Heatsink size must not be higher ...
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2answers
47 views

Controling linear PSU temperature

In many digital lab PSU designs, designers usually use a thermistor to control the cooling fan speed based on the main regulator actual temperature. When we have both current and voltage values, is ...
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3answers
269 views

Why does a Peltier cooler heat up when cooled by ice?

On this post, the question presents a problem of a Peltier cooler heating up after operating for a while. The explanation was that the Peltier cooler is only able to maintain a fixed temperature ...
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1answer
59 views

How do motors without cooling fins cool down?

I understand that the fan on the motor shaft blows air through the motor fins thus cooling down the motor... However, motors without these cooling fins surely can't cool down the same way. I just don'...
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2answers
109 views

Building an ac electromagnet

I want to generate a sinusoidal electromagnetic field of a specificed frequency between 30-80 Hz. For that I was going to pass an ac current to the an electromagnet. What do I generate an ac current ...
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1answer
83 views

Nidec gamma32 4pin pinout

I have Nidec Gamma32 D12F-24BS4 15BH2 blowing fan cooler. It has very strange coloring for wires: red-white-black-yellow. Probably two of wires are GND and +24v ...
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0answers
53 views

Cooling Peltier Maths

I want to construct a peltier cooling system. However, I have limited mathematical skills. Can I ask how to do the maths to calculate how much temperature differential can a specific peltier cool ...
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0answers
95 views

Peltier Cooling

I am trying to incorporate a peltier module on a relatively small space. Is there a way to incorporate a 40 x 40 mm heat sink (+- 10mm) to a 40 x 40 mm peltier module in such a way that it can run for ...
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2answers
113 views

Keeping power electronics cool

Fan cooling is common for power electronic devices like rectifiers and inverters. Brushless DC fans have been cheap and readily available for at least 2 decades. Open frame construction is common so ...
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1answer
141 views

Will this Cooler Master i70 CPU cooler work for Peltier Module TEC12706? [closed]

I am trying to make a Peltier cooler using TEC12706 and CPU coolers, the data sheet doesn't mention the cooling capacity of the cooler. Cooler Master i70 A TEC12706 typically works on 12V and takes ...
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2answers
47 views

Peltier AC Operating curve

I was looking at the product description of a 300W Peltier AC (Link) and encountered a curve like this While I'm aware that there will be a dT between the Peltier hot and cold sides, I am not able ...
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3answers
374 views

Cooling Methods for Voltage Regulators

I have a NCP1117 5V voltage regulator that is on an Arudino Mega. The Arduino Mega, with all of the necessary electronics parts for the project, draws around 200mA when operational. When using a ...
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1answer
173 views

Faulty temperature sensor on PCB - lights keep blinking, how to replace this?

I’ve been working on a broken continuous operating high power LED system - it starts blinking when powered. This was an indication of overheating and it was clear that the cooling fans have stopped ...
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1answer
108 views

What are options for cooling a 5 cubic meter proofing box [closed]

I would like to make a proofing box, a piece of bakery equipment used control the environment of leavened dough while it rises. The electronics part of my project is almost complete. It has a ...
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3answers
821 views

How do electrons carry thermal energy in Peltier coolers?

I've read that when electrons enter from metal to semiconductor type N, they gain thermal energy and make that side cooler and the reverse happens when they leave semiconductor to the conductor. Why ...
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2answers
574 views

Is Non-Passive Cooling bad for Lithium Ion Cells?

I'm in the process of designing a device capable of charging, discharging and testing internal resistance of 18650 cells. My device will be capable of testing 100x 18650 at the same time, each will ...
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2answers
79 views

Thermo Electric Can Heater / Cooler Heating vs Cooling Speed

I recently purchased a cheap (~$25) 36W thermoelectric cup holder designed to heat or cool a soda can sized object. It works very quickly for cooling and draws about 3A at 12V. For heating, it heats ...
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1answer
80 views

Is it sufficient to cool 4 TEC1-12708 (Peltier)?

Recently I tried to cool water with one TEC1-12706 (waterblock+tec+cooler) but for a lots of reasons (that I am now aware) it didn't cool water (1L in a closed cicle) under or even near 0ºC. I ...
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2answers
295 views

Beyond liquid helium cooling

Liquid helium has a boiling point of around -269°C and is used by overclockers. It has led to various world records (e.g. see here and here). What cooling technology can beat liquid helium for the ...
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5answers
3k views

How hot should wires get?

I am using 10 AWG wire to power a BLDC motor, and these wires can get quite hot. When an IC is intended for high power uses, it is common practice to put a heat sink on it, but what about for wires? ...
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0answers
39 views

May immersion cooling cause components to crack?

Just wondering if a component that has Moisture Sensitivity Level greater than 1 may also absorb ethanol or other coolant liquid used for immersion cooling and then crack when its boiling temperature ...
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1answer
83 views

Solutions for cooling solar panels [closed]

If someone wants to use solar energy in hot places, temperature is a problem. So, what's the solution for cooling the solar panel?
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5answers
15k views

How many cubic feet can 1 peltier cool efficiently?

I want to build a mini fridge, however, I want to build it a bigger than the ones showed in the tutorials I've watched. For that I assume I need more than one peltier to cool it. However, for that I ...
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3answers
14k views

How efficient is a Peltier TEC1-12706 and TEC1-12715

I need to know some details about Peltier coolers before moving into making an air-conditioner. I have watched several videos on YouTube that demonstrate making air-conditioners with Peltier thermo-...
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2answers
177 views

Ways to thermally manage a small enclosure?

hopefully this is an okay place to ask this question, but anyway, I'm working on a project to measure efficiency of a mono-crystalline solar cell based off temperature in the enclosure. The solar cell ...
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3answers
267 views

LT3083 heat dissipation

I was looking through a datasheet for the LT3083 regulator and in the typical applications sections this caught my eye: Provided input/output ratings could easily lead to over 20W being dissipated on ...
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1answer
107 views

Is it possible to cool an acrylic sheet with a Peltier (thermoelectric cooler)?

I am trying to create a cooling stage that can maintain 4 degrees Celsius however the stage must be optically transparent. Will a Peltier cooler be able to cool an acrylic sheet, or will the low ...
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3answers
2k views

Should I cool off in water the desoldered components?

I use a REGULAR (for home-use, not for electronics) hot air gun to desolder non-SMD components from PCBs. The components are really hot (naturally) after desoldering and it takes a while until they ...
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4answers
441 views

Is it possible to use a heatsink without a peltier plate?

At the moment I am working on a project which implies LEDs for street lighting. I need to dissipate around 24 W of heat. In order to do so, I calculated how much heat is dissipated into the air, and ...
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1answer
547 views

Does Solar powered ventilation systems for parked cars really work? [closed]

Do anyone have experience with the efficiency of air ventilation cooling systems for idle parked cars? I know some cars in the more expensive range (Mercs, and BMW's and some Toyota's) have a built ...
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1answer
1k views

Driving a Peltier w/ PWM or analog out [duplicate]

I feel like this has been beaten around the bush in a couple other topics, but I am hoping to find something a bit more definitive. I am looking to control a Peltier thermoelectric cooler. I've got a ...
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3answers
581 views

Heat sink on the bottom or on the side?

I am considering a thermal design and due to space requirements I was considering different orientation of the heat sink, namely putting it bottom down, obviously, and puttin it on the side as in ...