As the world shifts away from fossil fuels and toward energy renewable sources such as hydrogen, opportunities exist to develop new technologies. Using hydrogen to power fuel cells that generate electricity is an environment friendly alternative because its byproduct is pure water. The automotive industry, particularly in South Korea, has embraced hydrogen-powered fuel cells because cars powered by them enjoy a longer range and shorter recharge times than battery-powered counterparts. Other drivers in South Korea include government-sponsored initiatives in research and infrastructure, and Hyundai commencing manufacturing of its hydrogen-powered Tucson crossover at their Ulsan, South Korea-based plant in 2015.
To serve this emerging market, hydrogen refueling stations must be constructed. Mydax, Auburn, Calif., is taking an active role by providing a cooling solution for hydrogen refueling stations. One of the challenges faced when pumping compressed, pure hydrogen into a vessel onboard an automobile is cooling the hydrogen to temperatures cold enough to attain the proper working pressure, says Mydax's Brandon Hall.
The capabilities of the Mydax CryoDax60 chiller —the largest of Mydax’s CryoDax line of chillers — align well with the requirements and specifications of hydrogen refueling stations. Utilizing two 30-hp compressors in a parallel configuration, the chiller is able to cool a recirculating loop of silicone oil to -76°F (-60°C) while providing 22.7 kW of cooling at -40°F (-40°C).
According to Mydax, the chiller systems incorporate welded, powder-coated steel frames as well as stainless steel reservoirs and brazed plate heat exchangers. Standard features include its Opdax controller, which utilizes a high resolution 5.7" color touchscreen display for ease of use by the operator.