77K Stirling Cryocooler

Stirling cryocoolers are particularly well-suited for applications in high-temperature superconductivity and the liquefaction of gases on a smaller scale. This suitability arises from their notable attributes, including exceptional efficiency, an extensive operational temperature spectrum, and rapid cooling capabilities.

The RIGID® Stirling Cryocooler offers efficient, reliable, compact and high power cooling to the market in the temperature range of 35 to 77 Kelvin. The Cryocoolers series are optimized for applications in which SWAP (size, weight and power) and reliability are concerns. The RIGID Stirling Cryocooler series consumes considerably less power than other cooling alternatives and requires no maintenance, making it ideal for strategic as well as industrial applications. Both the cold head and the pressure wave generator can be mounted in any orientation.

RIGID Cryocoolers application examples include semiconductor manufacturing, large infrared detectors, RF receivers or antennas, astronomical telescopes, laser cooling, high-temperature superconductivity, cold traps, and others.

The cryocooler exhibits commendable performance characteristics, demonstrating remarkable efficiencies exceeding 30% of the Carnot cycle when considering both net useful cooling capacity and net electrical power consumption for the cryocooler's drive motors. This high level of efficiency is consistently achieved, even when operating at temperatures of 60K and above, despite the use of non-optimized cold head configurations.

RIGID Technology has 4 models Cryocoolers currently.

1. RS40 (-100℃~ 0℃) https://www.rigidhvac.com/store/products/fpsc-stirling-rs40
2. RS100 (-150℃~ 0℃) https://www.rigidhvac.com/store/products/fpsc-stirling-rs100
3. RS100 PLUS (-160℃~ 0℃) https://www.rigidhvac.com/store/products/fpsc-stirling-rs100-plus
4. RS100 PLUS 77K (-196℃~ 0℃) https://www.rigidhvac.com/store/products/stirling-cooler-rs100-plus-77k

For the Stirling 77K model, in the cold head focus are reached very low temperatures 77 K (-196 °C).

RIGID Technology has 4 models Cryocoolers currently.

1. RS40 (-100℃~ 0℃): 40W
2. RS100 (-150℃~ 0℃) : 100W
3. RS100 PLUS (-160℃~ 0℃) : 100W
4. RS100 PLUS 77K (-196℃~ 0℃) : 100W

The lower the temperature, the less cooling power is required, and vice versa.

Within the Stirling cycle, the working gas undergoes a cyclic process involving alternating heating and cooling phases, achieved through constant-temperature and constant-volume processes. Typically, Stirling engines are equipped with a regenerator designed to augment their efficiency. This regenerator efficiently captures and stores heat during the constant-volume cooling phase, subsequently reintroducing it when the gas undergoes heating at constant volume.

Wattage is a key consideration when assessing air coolers, as they typically operate within a power consumption range of 150W to 300W watts. In practical terms, this implies that during the operation of an air cooler, it draws electrical power at a rate ranging from 150 to 300 watts per hour. To express this power consumption in kilowatts (kW), one can simply divide the wattage figure by 1000.

Stirling cryocoolers have several practical applications:

1. Cooling materials for high-temperature superconductors.
2. Keeping MRI machines and superconducting magnets cold.
3. Cooling infrared sensors in thermal cameras and scientific instruments.
4. Supporting space telescopes and satellite instruments.
5. Enabling research instruments, like spectrometers.
6. Compact gas liquefaction for laboratory use.
7. Military uses, such as cooling thermal imaging systems.
8. Monitoring greenhouse gases and environmental factors.
9. Cooling equipment in the semiconductor industry.
10. Storing biological samples in cryopreservation.
11. Cooling specialized electronics for peak performance.

These cryocoolers are valued for their reliability and efficiency in maintaining extremely low temperatures for various purposes.

A cryocooler has a few important parts that work together to make things very cold:

1. Compressor: Squeezes and moves a special gas around.
2. Expander: Lets the squeezed gas expand, making it super cold.
3. Heat Exchangers: There are two: one gets hot, and one gets cold. They help with the cooling process.
4. Regenerator: A sponge-like material that helps make the cooling more efficient by storing and releasing heat.
5. Thermal Shields: These shields prevent heat from getting to the cold part.
6. Cold Finger: This touches and cools whatever needs to be cold, like a magnet or a sensor.
7. Control Electronics: Computers that make sure everything works correctly.
8. Support Structure: A frame that holds everything in place.
9. Gas Circulation System: Pipes and valves to move the gas around.
10. Power Supply: Gives electricity to the cryocooler.

These parts work together to create and maintain very low temperatures for various uses in science, industry, and medicine.

RIGID's Cryocoolers choose gas - Helium.

Cryocoolers use different gases to make things very cold. Common gases include helium, nitrogen, hydrogen, neon, krypton, and xenon. The choice depends on what needs to be cooled and how cold it needs to get.

RIGID Stirling Cryocooler can work for 10 years normally; and ＞20,000 hours continuously.

RIGID company's Stirling cryocoolers choose Helium as refrigerant. They are environmentally friendly energy sources and operated efficiently, as they produce no emissions and have a long operational lifespan.

-160°F

Liquid nitrogen produces the coldest form of cryotherapy available. Some chambers use a form of cooling with electricity, but they cannot reach any lower than -155°F. Cryotherapy must reach at least -160°F to achieve the cryogenic environment for cryo to do its magic.

In the context of evaporation cryostats, it is notable that the attainment and sustenance of cryogenic temperatures are facilitated most effectively through the utilization of liquefied gases, known as cryogens. Among these, nitrogen and helium stand as the most prevalent choices.

Through the utilization of profoundly cold temperatures achieved by employing liquefied gases such as liquid nitrogen (LN2) or carbon dioxide (CO2), cryogenic cooling presents a range of advantageous attributes. These include precise temperature regulation, extension of tool lifespan, augmentation of surface quality, and mitigation of environmental impact.

The utilization of cryogenic cooling in machining processes offers several notable advantages. When liquid gases are employed for cooling production tools, an additional sustainability benefit is realized. Cryogenic cooling has been observed to significantly diminish tool wear, thereby enhancing the longevity and performance of equipment. This, in turn, contributes to a reduction in waste generation and environmental pollution.

The expense associated with cryocoolers primarily hinges upon the degree of specialization required. Given that these systems are frequently deployed in highly specialized domains, such as scientific research and medical applications, the cost escalates commensurately when a customized cryocooler tailored to specific needs is sought after.

Purchase a Stirling Cryocooler online: https://www.rigidhvac.com/online-order

In essence, a Stirling cryocooler employs the Stirling cycle to transform electrical energy into a heat-moving process, which transfers heat from the cold end to the heat rejecter.

These applications highlight the versatility and significance of cryocoolers in a wide array of fields where precise temperature control and low-temperature operation are essential.

1. Medical Imaging
2. Infrared Sensors and Detectors
3. Astronomy and Space Exploration
4. Cryopreservation
5. Semiconductor Industry
6. Environmental Monitoring
7. Military and Defense
8. Cryogenic Research
9. Gas Liquefaction
10. Material Characterization
11. Space Missions
12. Environmental Testing

Cryocoolers are used in many different areas, including medical imaging, space exploration, and electronics. They work by making things very cold and have applications in cooling sensors, preserving biological samples, and more. Their ability to maintain extremely low temperatures is valuable in various fields.

Stirling cryocoolers are generally known for their high efficiency compared to other cooling methods, with efficiencies ranging from 15% to 30% or higher of the theoretical maximum (Carnot efficiency).

However, actual efficiency can vary based on factors like temperature differential, design, maintenance, and operating conditions. Engineers aim to optimize cryocooler designs for specific applications to achieve both efficiency and reliable cooling performance.

The RIGID carries a 12-month full replacement warranty, exclusive of failure due to misuse. Furthermore, RIGID company develops other warranty arrangements for specific customers.