Design and development of world leading cryocooler technology.
CLSS and BCS Life Support has amassed over 1000 research hour’s and 10 years of consulting to NASA. Employing personnel with over 100+ years combined experience at NASA’s Kennedy Space Center, the CLSS team has extensive and varied experience which has put the company in the unique position to utilize the enormous market potential for the use of cryogenic Liquid Air.
WHY LIQUID AIR?
Compressed air has its own hazards because it’s stored at a high pressure. It’s also heavy and takes up a lot of space. Compressed 100 percent oxygen can present potential fire hazards. BCS partnered with NASA’s Biomedical Lab and the National Institute for Occupational Safety and Health (NIOSH) to develop zero-loss liquid air storage and a cryogenic breathing apparatus that works 90 degrees from vertical in any direction.
ABOUT LIQUID AIR
A technology used by NASA to protect crews working around hazardous gases soon could be called on for a number of life-saving applications as well as the agency’s new human spaceflight endeavors. The Cryogenic Refuge Alternative Supply System (CryoRASS) and a smaller liquid air-filled backpack under development in Kennedy Space Center’s Biomedical Lab have the potential to store more than twice the amount of breathable air than traditional compressed gas systems. Whilst one key advantage to the liquid air systems is improved safety, it also cools the worker minimising heat stress, and provides significantly longer breathe times on same sized units. The liquid air system has real applications in hazardous environments, rescue missions and below ground recovery scenarios. The challenge is having on-site zero loss liquid air production capability. CLSS have chosen AFCryos cryocoolers to partner with to overcome this challenge. AFCryo cryocoolers combined with the CLSS/NASA liquid filled backpacks now brings this technology to global market. Words and images courtesy of CLSS.
Southern Gas Services Ltd is a New Zealand owned and operated company, servicing a diverse customer base which ranges from Aviation to Viticulture throughout both New Zealand and Australia. SGS carry an extensive portfolio of atmospheric, process and speciality gas and gas related equipment, representing only the finest products from world leading manufacturers in their given field. SGS is increasingly recognised for its innovative culture, operational excellence, commitment to customer requirements and safety. SGS specialise in on-site gas generation. Their product range offers unmatched reliability and efficiency backed by outstanding service and after sales service.
SGS have expanded their supply to customers by integrating the AFCryo cryocoolers with their gas systems to provide on-site liquid nitrogen supply. These systems have been in continuous automated operation for over two and a half years.
AFCryo has supplied one large PTC1000 full air to liquid nitrogen system to a client on Corsica Island that manufactures liquid and sells to industry and medical clients directly. The client has ordered a further two systems for delivery in February 2019 and then July 2019. The systems are fully autonomous, with HMI front end (pictured below). The system was initially built in New Zealand, with gas delivery system integrated in France, and full assembly commissioned in Corsica.
The system produces 360 litres of liquid nitrogen per day, stored into a maximum capacity 1000 litre dewar. The 1000 litre dewar allows the system run continuously over the weekend and build up storage volume of 1000 litres. The unit switches off when the dewar is fill and restarts once a minimum of 100 litres has been drawn off. All tranfill operations to client and delivery dewars is automated.
Fabrum Solutions is in the process of delivering a fully autonomous system into Tanzania for the prevision of liquid nitrogen for the freezing of AI straws in a remote location. The system is identical to the LSHTM system. It has auto on/off on dewar storage level, power fluctuation detection and protection, closed loop forced air water cooling, HMI operation, and requires only the connection of power when commissioned as it is fully enclosed in a 10-foot shipping container for easy relocation.
The AFCryo/Fabrum Solutions cryocooler technology was chosen by NASA for use on the MARS Lander project. Whilst the configuration of the system is slightly different to the proposed LSHTM system, the cryocooler technology is identical. NASA chose the system for its ability to operate autonomously, remotely, and reliably for a significant timeframe – an obvious prerequisite for a system being sent to Mars. The current unit being used by NASA is one of several that AFCryo/Fabrum Solutions will be supply NASA for this project.
A US integrator chose the AFCryo/Fabrum Solutions PTC1000 cryocooler for a high purity medical oxygen supply system on a Navy Aircraft installation. Key deliverables of this system were ease of integration of operation and control into the larger unit, an ability to integrate into the onboard ship control systems, operability in turbulent conditions, and high reliability. This unit has now become the standard system for this defense group.
Robinson Research, a crown funded research institute residing in Victoria University requires reliable onsite liquid nitrogen production for the testing of superconducting Roebel cable and magnet performance. On a weekly consumption of 500 litres of LN2 the AFCryo Cryo Cube PTC330 was the perfect match. Delivered fully commissioned and requiring only a power connection the unit was producing liquid nitrogen within minutes of delivery.
With growing regulations around delivery and handling of cryogens the ability to have on-site production of liquid nitrogen automatically operated and supplied to NMR magnets was a perfect solution to mitigate health and safety concerns. The convenience and simplicity of the operation also allows the NMR technicians to focus on the important elements of their work, not ordering, receiving and moving bulk liquid nitrogen dewars around the campus.
Already owning a nitrogen generator for purging of electrical systems, Nautech required the addition of liquid nitrogen to operate their HASS system for rapid life testing of electrical components. The constant unreliability of bulk nitrogen supply was a costly distraction from core business. The simple addition of a PTC330 cryocooler connected between the nitrogen generator and the HASS chamber was a simple system upgrade that removed any issues of liquid supply.