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Thermometric Coolers

 
 
 
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steve_bank

Diabetic retinopathy and poor eyesight. Typos ...
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Thermometric coolers are commonly used in electronics. They can be stacked to get very cold temperatures.

Simple to use. DIY Put a heat sink made for a fan on each side, put the hot side outside a room, and put a DC voltage across it.

You can run it 'open loop' or put a simple thermal swatch in series with the DC voltage.

The hot side can be ducted outside through a widow with flexible ducting and duct tape.

A thermoelectric cooler (TEC), or Peltier cooler, is a solid-state device that uses electricity to move heat from one side to the other. When power flows through it, one side becomes cold while the other side gets hot. Portable versions are popular for road trips and camping as lightweight alternatives to traditional compressor fridges.
Click to expand...

Wakefield Thermal Two Phase Cooling Thermoelectric Coolers

To properly cool sensitive equipment like biomedical instruments, lab equipment, and more, then go with Wakefield Thermal's Thermoelectric Coolers.
wakefieldthermal.com wakefieldthermal.com

User manual

View attachment 54985

User manual.

en.wikipedia.org

Thermoelectric heat pump - Wikipedia

en.wikipedia.org en.wikipedia.org
Thermoelectric heat pumps use the thermoelectric effect, specifically the Peltier effect, to heat or cool materials by applying an electrical current across them. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current. Such an instrument is also called a Peltier device, Peltier heat pump, solid state refrigerator, or thermoelectric cooler (TEC) and occasionally a thermoelectric battery. It can be used either for heating or for cooling,[1] although in practice the main application is cooling since heating can be achieved with simpler devices (with Joule heating).
Click to expand...
 
steve_bank said:
Thermometric coolers are commonly used in electronics. They can be stacked to get very cold temperatures.

Simple to use. DIY Put a heat sink made for a fan on each side, put the hot side outside a room, and put a DC voltage across it.

You can run it 'open loop' or put a simple thermal swatch in series with the DC voltage.

The hot side can be ducted outside through a widow with flexible ducting and duct tape.

A thermoelectric cooler (TEC), or Peltier cooler, is a solid-state device that uses electricity to move heat from one side to the other. When power flows through it, one side becomes cold while the other side gets hot. Portable versions are popular for road trips and camping as lightweight alternatives to traditional compressor fridges.
Click to expand...

Wakefield Thermal Two Phase Cooling Thermoelectric Coolers

To properly cool sensitive equipment like biomedical instruments, lab equipment, and more, then go with Wakefield Thermal's Thermoelectric Coolers.
wakefieldthermal.com wakefieldthermal.com

User manual

View attachment 54985

User manual.

en.wikipedia.org

Thermoelectric heat pump - Wikipedia

en.wikipedia.org en.wikipedia.org
Thermoelectric heat pumps use the thermoelectric effect, specifically the Peltier effect, to heat or cool materials by applying an electrical current across them. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current. Such an instrument is also called a Peltier device, Peltier heat pump, solid state refrigerator, or thermoelectric cooler (TEC) and occasionally a thermoelectric battery. It can be used either for heating or for cooling,[1] although in practice the main application is cooling since heating can be achieved with simpler devices (with Joule heating).
Click to expand...
Click to expand...
I made a Peltier cooler that holds one soda/beer can. runs on 5v. Works pretty well. kool thing about Peltier chips is if you apply heat, you get some power.
I always wondered if you put Peltier chips near an ICE, could you capture some of that wasted energy?
 
A man after my own heart.

Making use of waste energy suffers from efficiencies. Efficiencies in energy conversion multiply. To make use of waste heat you need a high enough amount or energy to be able to do useful work.k

You can look up thermopile power generators. Used on space probes and rovers.
 
steve_bank said:
Thermometric coolers are commonly used in electronics. They can be stacked to get very cold temperatures.

Simple to use. DIY Put a heat sink made for a fan on each side, put the hot side outside a room, and put a DC voltage across it.

You can run it 'open loop' or put a simple thermal swatch in series with the DC voltage.

The hot side can be ducted outside through a widow with flexible ducting and duct tape.

A thermoelectric cooler (TEC), or Peltier cooler, is a solid-state device that uses electricity to move heat from one side to the other. When power flows through it, one side becomes cold while the other side gets hot. Portable versions are popular for road trips and camping as lightweight alternatives to traditional compressor fridges.
Click to expand...

Wakefield Thermal Two Phase Cooling Thermoelectric Coolers

To properly cool sensitive equipment like biomedical instruments, lab equipment, and more, then go with Wakefield Thermal's Thermoelectric Coolers.
wakefieldthermal.com wakefieldthermal.com

User manual

View attachment 54985

User manual.

en.wikipedia.org

Thermoelectric heat pump - Wikipedia

en.wikipedia.org en.wikipedia.org
Thermoelectric heat pumps use the thermoelectric effect, specifically the Peltier effect, to heat or cool materials by applying an electrical current across them. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current. Such an instrument is also called a Peltier device, Peltier heat pump, solid state refrigerator, or thermoelectric cooler (TEC) and occasionally a thermoelectric battery. It can be used either for heating or for cooling,[1] although in practice the main application is cooling since heating can be achieved with simpler devices (with Joule heating).
Click to expand...
Click to expand...
In common parlance, this would be called an air conditioner. The real question is can it be scaled up to be a usable air conditioner, , that is to say, would be more efficient than a regular recycling refrigerant unit.

One of the earliest practical refrigeration systems used a gas flame the size of a pilot light to evaporate ammonia. Ammonia gas condensed in capillary tubes and absorbed heat from the cabinet. It's much more efficient than an electric refrigerator, but it has its limits. They are still used today in many RVs. The minimum temperature is above freezing, unless an electric fan is added, and even then, still limited. It was a great system back in the day when it's only competition was a 40 pound block of ice.
 
The problem with TEC is inefficiencies. You can buy small TEC air conditioners for a room.

A few tears back when we had a severe long heat wave some bought small units. A flexible duct goes out the window.

You can search on thermometric room air conditioners. There are a number of DIY kits.

You'd have to work out cost of ice per watt of BTU of cooling. There are small cheap conditioners that use evaporator coiling. Blow air across plates while squirting water. There is industrial scale evaporative cooling, ilke data centers. Water usage is one of thee reasons people don't want local data centers.
 
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thebeave said:
steve_bank said:
ou can look up thermopile power generators. Used on space probes and rovers.
Click to expand...
You don't have to go that extreme to find thermopiles. Your water heater and/or furnace probably has one. They're a dime-a-dozen.
Click to expand...
Yup. Use the heat from the pilot light to generate a bit of power to hold the gas line open. Pilot light goes out, gas cuts off.
 
steve_bank said:
Thermometric coolers are commonly used in electronics. They can be stacked to get very cold temperatures.

Simple to use. DIY Put a heat sink made for a fan on each side, put the hot side outside a room, and put a DC voltage across it.

You can run it 'open loop' or put a simple thermal swatch in series with the DC voltage.

The hot side can be ducted outside through a widow with flexible ducting and duct tape.
Click to expand...
But they're inefficient. You use such devices when you want a small cooling unit, you don't use them when you want a lot of cooling.
 
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