New background article: Many reasons for small quantities of refrigerant

Ammonia is an environmentally benign, cost efficient and future proof refrigerant. It has been traditionally used in industrial applications for cooling capacities of several megawatts using tonnes of refrigerant charge. However, the flammability and toxicity of ammonia impose comparatively high safety requirements in terms of system design when compared to synthetic refrigerants, and traditionally has not always been suitable for every application. System and component development has resulted in the wider adoption of low-charge ammonia systems as an attractive alternative to conventional systems, across an increase range of applications. Find more information about advantages (and challenges) of low charge ammonia systems here.