• Free Piston Stirling Cryocooler

     

    FPSC (Free Piston Stirling Cryocooler) is a new type of completely CFC-free, high-efficiency, energy-saving, and environmental protection Cooler, which uses a small amount of helium as the coolant.

     

    FPSC also is a kind of Magnetic Levitation Compressor (MagLev solution). But it is an even more efficient chiller compressor, with low energy cost, and consumption. It is small and portable, and it is widely used for precise temperature control for under -170℃ maximum.

     

    RIGID, one of the leading Chinese companies in terms of innovation, designed a Free-Piston Stirling cooler – FPSC. The unit takes the entire product to a whole new level where it can save a lot of energy and significantly improve efficiency. The default version of Stirling coolers includes pistons, heat exchangers, and compression spaces. But we see technological advancements in all industries, such as Biotech, Pharmaceutical, Food, Energy, Chemical, Medical, Bio-Science, logistics, and Metrology.

     

    RIGID Free-Piston Stirling Cryocooler is a game-changer for next-generation ultra-deep freezing! Read More...

  • Application Principles

     

    To cool air in a compact and confined area!

    1.

    Direct Cooling with Conductive Connection

    2.

    Indirect Cooling with Heat Exchanger+Fan

    3.

    Direct Cooling with Thermosyphon

    4.

    Direct Cooling with Brine/Glycol/Nitrogen

  •  

    1
     
    Cooling performance-Least: 
    Aluminum plate is not uniformly and the thermal resistance between the aluminum plate and inside air is relatively large. Limited effective volume.
     
    Influence of frost on cooling-Little:
    The surface area of the aluminum plate exposed to the inside air doesn't become smaller when aluminum plate surface is covered with frost.
     
    Others:
    The vibration of the FPSC is conducted to the insulated container and aluminum plate directly and they can become a source of noise.
    2
     
    Cooling performance-Best: 
    The thermal resistance between cold side of FPSC and heat exchanger is relatively small. The thermal resistance inside air is relatively small too.
     
    Influence of frost on cooling-Large:
    When the space is filled with frost, air can't flow there. The surface area of finned plate exposed to the inside air becaomes smaller and cooling performance is reduced.
     
    Others:
    1. It is necessary to specify a fan motor suitable for operation at desired qorking temperature.
     
    2. The heat from the fan motor adds an additional heat load and reduces the overall cooling performance.
    3
     
    Cooling performance-Better: 
    Aluminum plate is cooled more uniformly than "1". Two-phase heat transport allows for the lowest thermal resistance between the aluminum plate and FPSC.
     
    Influence of frost on cooling-Little:
    The surface area of the aluminum plate exposed to the inside air doesn't become smaller when aluminum plate surface is covered with frost.
     
    Others:
    1. It is necessary to define and prepare a suitable working fluid for desired operating temperature.
     
    2. It is necessary to prepare charging equipment for working fluid.
     
    4
     
    Cooling performance-Better: 
    Copper tube is attached on aluminum plate with more freedom than "3". Plate is cooled more uniformly than "3" but results in a higher thermal resistance.
     
    Influence of frost on cooling-Little:
    The surface area of the aluminum plate exposed to the inside air doesn't become smaller when aluminum plate surface is covered with frost.
     
    Others:
    1. It is necessary to prepare suitable brine and pump for desired operating or storage temperature.
     
    2. The heat from the pump motor adds an additional heat load and reduces the overall cooling performance.
     
    3. It is necessary to take precautions against potential brine leakage.
  • Product Models

     

    Stirling Cooler, which we refer to as the FPSC (Free Piston Stirling Cooler). RIGID has prepared a product lineup of Stirling Coolers that can cool air temp to 30℃ ~ -160℃ using helium gas as the refrigerant. The Stirling Cooler, which differs from a compressor, is a cooling system that continuously repeats gas compression and adiabatic expansion and uses naturally occurring helium gas as the refrigerant.

     

    Helium is a very safe gas that is entirely harmless to our global environment. The typical use of our Stirling Cooler is in portable freezers, and refrigerators, but we are also developing a product lineup for use in laboratory equipment and in medical devices used for low-temperature distribution of goods.

     

    FPSC-RS40

    Capacity: 40W

    Input Power: 12V
    N.W: 2.2kg (4.8lbs)

    Coolant: Helium=2.5g

    Size: ODФ86mm x Length260mm
    Working Lifetime: Continuously operation ≥10,000hrs
    Working Condition: 0℃~+60℃(32℉~140℉)
    Installation: Any direction is workable

     

    Temperature Sensor of Controller: -1℃ to -99℃

    Temp Range in Cold Fin (Cold part): -100℃~ 0℃

    FPSC-RS80

    Capacity: 80W

    Input Power: 24V
    N.W: 2.2kg (4.8lbs)

    Coolant: Helium=3.0 g

    Size: ODФ86mm x Length270mm
    Working Lifetime: Continuously operation ≥10,000hrs
    Working Condition: 0℃~+60℃ (32℉~140℉)

    Installation: Any direction is workable

    Temperature Sensor of Controller: -1℃ to -99℃
    Temp Range in Cold Fin (Cold part): -140℃~ 0℃

     FPSC-RS150

    Capacity: 100W

    N.W: 4.0kg (8.8lbs)

    Coolant: Helium=3.0g

    12V~30V DC Power Supply
    External Size: 132mm×132mmx336mm (LxWxH)
    Working Lifetime: Continuously operation ≥10,000hrs
    Working Condition: 0℃~+60℃ (32℉~140℉)
    Installation: Any direction is workable

    Temperature Sensor of Controller: 0℃ to -140℃
    Temp Range in Cold Fin (Cold part): -160℃ ~0℃

  • Stirling Cooler Cooling Performance

    * Data from product Stirling - RS100

    FPSC-RS40

    * The Stirling cycle is a thermodynamic closed cycle that was invented in 1816 (!) by a Scottish minister, Robert Stirling.

    Free Piston Stirling Cooler Advantages-FPSC RIGID
  • Cooling Performance Curve

    Using safe and environmentally friendly Helium gas as the refrigerant. With the international advanced Free-piston Stirling technology, RIGID Stirling Coolers have a minimum temperature that can be controlled to -160℃, ±0.1℃. Furthermore, the Cryocooler has the smallest footprints, which is very suitable for deep, and fast low-temperature transportation and cold chain logistics.

     

    FPSC-RS100
  • Key Features

    A Game-Changer For Next-Generation Deep Freezing - State Of The Art!

    Evaporating Temp Below -99 ℃

    Temperature down to -99℃ in few mins. It's suitable for strict temperature control. Depending on the heat mass, cooling capacity and speed can be fine-tuned.

    Temperature Below -160 ℃

    No OIL, No CFC.

    It adopts helium as coolant, MagLev technology. It can reach maximum ultra deep temp -160℃ (only RS100), with 50% energy savings.

    Most Compact & Lightweight

    RIGID stirling cooler can be installed on various applications, especially for portable equipment because of its compactness and lightweight.

    Completed & Integrated

    RIGID Stirling cooler, drive board, temperature control and fan are integrated in one unit. You can install it into your system or equipment as it is.

    Zero Maintenance & Less Engineering

    Integrated configuration, no solder joints, which greatly improves reliability while reducing after-sales maintenance.

    Long Continuous Operation

    Stirling convertor sets achieves 14-Year continuous operation milestone, record-breaking power convertor.

    Refrigerant CFC Free & Oil Free

    Freon or other substitutes have been completely eliminated. No need oil operation, no wear, low failure rate.

    All-Round Installation Available

    Installation angle is not required, can be 360° rotation. Shock resistant, less vibration, ultra low working noise.

  • APPLICATIONS

    RIGID ULT Stirling Cold Solutions Are Trusted in a Variety of Applications.

     

     

    RIGID Stirling Coolers not only are the most environmentally sustainable ultra-low temperature (ULT) coolers on the market, but they are also the most cost-effective with the lowest life cycle costs. You can benefit from breakthrough Stirling cooler technology without compromising cooling performance across the entire research organization with your devices or equipment.

    Military & Aerospace

    Medical & Laboratory

    Bio-tech Pharma

    Semiconductor

    Vaccine Transportation

    Smart Cold Chain

    Portable Freezer

    X-Ray Machines

  • Components & Parts

    Premium Technology with the lowest total cost of ownership!

     

  • Stirling Cooler FPSC Factory Site

    Stirling Cooler Factory 

    Stirling technology has been used in military and aerospace fields for more than 20 years.

     

    However, due to its high price, it has not been used in the mass market, and there are not many related application products.

    After 3 years of efforts, RIGID engaged with a China researchinstitue and has successfully launched a series of affordable quality products for deep freezing.

    -86℃ Stirling Freezer

    Model: CPF01L86

     

    Temperature -86℃ and portable freezer. Best choice for vaccine and drug transportation and storage.

    Our R&D Team

    Ultra-low Transportable Cryogenic Freezers are specifically designed for Vaccine and drug transportation and storage.

    Stirling Power Freezer

    Freezers For all kinds of vaccines.

    Covid-19 Vaccine Freezer Storage and Transportation.
    Set the temperature you need from 8℃ to -80℃.

    Vaccine Freezer

    RIGID Can Provide Off-the-Shelf Products Designed And Produce By Us And Our Partners.

  • CONTACT US

    For further information contact Rigid Stirling today!

  • ​Specifications PDF

    Stirling Cooler RS40

    12V, 40W

    Stirling Cooler RS80

    24V, 80W

    Stirling Cooler RS100

    24V, 100W

  • Stirling Cooler FAQ

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