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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39 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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6answers
10k views

Why aren't CPUs cooled from below as well as above?

The transistory bits of an integrated circuit are approximately in the centre of the (plastic or ceramic) package. They sometimes get hot, and we cool them by affixing a heat sink to one side. ...
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1answer
328 views

Adding Peltier module to an evaporative cooler

I'm planning to add a two Peltier module (TEC 12706 with heatsink on both sides) on a evaporative cooler but I cannot decide where should I put them. Here's the idea: Idea B would be good but I'm ...
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3answers
7k 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
125 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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1answer
24 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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2answers
76 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 ...
0
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0answers
33 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
80 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 ...
3
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1answer
158 views

Temporary thermal adhesive for PCB measurement

I am making an examination on the effects of adding cooling to some existing electronics (making an comparison between having no cooling of the electronics and adding a heatsink or heatpipe + heatsink)...
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4answers
9k views

What's needed to put a PC fan into reverse?

I've got a PC fan here (I've peeled off a sticker). And although this one doesn't come with the usual 3 or 4 wire connectors, it has enough electronics in it to only operate when power + is on red, ...
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2answers
106 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
76 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
43 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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2answers
113 views

Three phase rectifier heatsink

I need to choose a heatsink and a fan for cooling a three phase rectifier. Let's say that the total power dissipation is 1.8kW and that the rectifier is made of three half bridge IGBT/diode modules ...
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3answers
126 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 ...
2
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1answer
128 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
69 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 ...
0
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0answers
90 views

Design temperature for an electrical control panel?

I am putting together an electrical control panel composed of small VFDs (like Siemens micromaster 440), PLC AB 1400 B etc, contactors, relays etc. What temperature and humidity should I design the ...
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1answer
2k views

Wiring an SPDT thermostat to simultaneously control heating and cooling devices

I've set up an old fridge with a custom thermostat to finely control the cooling levels of the contents but would like to provide heating to the unit if the temperature drops below the thermostat's ...
6
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3answers
753 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
3k views

Heat Transfer of Aluminum Plate with LEDs

I'm building an LED grow light for an, um, indoor vegetable garden, and I'm trying to figure out what dimensions I can get away with for the aluminum sheeting I'm going to use for the mounting plate. ...
0
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2answers
391 views

What are the optimal conditions to maximize Peltier cooling performance and duration?

Hi first time poster here, I got a few peltier plates just last week and have been doing some research surrounding their polarity reversal and the limits of what they can do. However I still have a ...
4
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2answers
544 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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5answers
8k 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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1answer
263 views

How much difference do peltier units have

I recently bought a 6 can fridge cooled with a tec1-12705 unit, meaning the current rating is 5 amps. It gets about 7 degrees C inside the fridge and I want to upgrade it. I've been searching for a ...
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2answers
65 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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4answers
15k views

Peltier Unit Not Working

Recently I ordered a Peltier unit online and received it yesterday. Naturally, I was very excited to play with it. When I first turned it on, One side got hot, an another very cold. I had read that I ...
0
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1answer
52 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
193 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
751 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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7answers
1k views

capacitor with fridge

I have a tricky question for you. I'm trying to operate a 100w fridge using solar power, a car battery and an inverter. The inverter says that it's 2000w but it most likely seems that its a 700w but ...
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1answer
81 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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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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3answers
188 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 ...
0
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1answer
71 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 ...
0
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3answers
9k views

Use Peltier Cooler for effective Air Cooling?

I am using 4 TEC1-12706 thermoelectric cooler on a suitcase, by cutting 4 holes to fit these through and sealed them. All of them are connected to 12V DC supply from a SMPS and each of them have ...
1
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1answer
7k views

Could I create Peltier cooling module from iron and copper?

I want to create a tiny, easy to maintain one-purpose distilation unit. It's supposed to distilate expensive tetrachlorethylene to clean it from whatever is dissolved in it. There are millions of ...
1
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1answer
620 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 ...
0
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4answers
324 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 ...
21
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8answers
58k views

Fans: suck or blow?

For a fan, should air be sucked in, or should it blow air out? I'm talking about an enclosure mounted fan.
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1answer
426 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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3answers
297 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 ...
0
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1answer
184 views

Expand heatsink contact area with larger copper plate? [closed]

I'm looking at DIY projects where a COB LED is cooled by an all-in-one CPU liquid cooler, however the contact area in a CPU heatsink will only fit one high-power LED. I'm considering how I could use ...
0
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0answers
772 views

Running a Peltier water cooler from a battery

I'm planning on using this unit: 12V Peltier water cooler for a portable heater/cooler. As such, I would need to run it off a battery. Based on what I've been reading, the best choice is a deep-...
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2answers
1k views

Heatsink calculations for a TRIAC

It's very rare that I get to design applications in need of cooling so I haven't had the need to study in-depth about that, but now I face an occation where I need cooling for a TO220 and I'm unsure ...
1
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2answers
405 views

Will stacked Peltiers produce a greater dT? [duplicate]

I am using this peltier device to ramp an aluminum plate down to -10C in a vacuum environment. I chose this particular device because it had the largest 'Qout' of any single-stage peltier I could find ...
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1answer
332 views

Peltier cold temperature does not transfer when a heat sink is attached

I am trying to build a peltier cooler. It works. Cold side temperature is about 10C on cold plate of peltier. I want to blow this cool air out. But the cold temperature goes up as soon as the ...
-1
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1answer
45 views

Installing split AC's outdoot unit in a cool place [closed]

I wonder if it would be efficient if a split AC's outdoor unit is installed 8 feet underground in a well with ventilation will be any efficient due to the constant temperature underground all year ...