FPSC-Free Piston Stirling Cooler

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

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.

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.

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.

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℃

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

* 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.

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.