Indian Army engineers convert liquid oxygen to low-pressure oxygen gas for Covid patients:
India’s response to the second wave of COVID dictated tremendous demand for oxygen and oxygen cylinders. As oxygen is transported in liquid form in cryogenic tanks, converting liquid oxygen into oxygen gas and ensuring availability at the bedside of patients is a critical challenge facing all hospitals managing COVID patients.
A team of Indian Army engineers led by Maj. Gen. Sanjay Rihani took the initiative to address this challenge. A special task force was quickly assembled for the initial implementation of an invention to see that oxygen was available without the use of gas cylinders, thereby eliminating the need to refill them frequently.
Within seven days, a team of Indian Army engineers convert liquid oxygen into low-pressure oxygen gas with direct consultation and material support from CSIR & DRDO set up a working solution using vaporizers, PRVs, and liquid oxygen cylinders. To ensure the continuous conversion of liquid oxygen into oxygen gas at the required pressure and temperature in the COVID bed, the team used a small pressure liquid oxygen cylinder with a small capacity (250 liters) and a specially designed vaporizer that can be used directly with the required leakproof pipeline and pressure valve out (4).
The model was designed with two liquid cylinders capable of consuming 40 beds of oxygen for two to three days at the Base Hospital in delhi. The team tested the mobile version to meet the general transfer requirements in hospitals. This system is economically viable and eliminates high gas pressure in the pipeline or cylinders and is safe to operate as no power supply is required to operate. The system can replicate in a quick time frame.
This innovation is another example of the commitment of the Indian Army in promoting innovation in bringing simple and practical solutions to complex problems. The Indian Army remained steadfast with the country in this battle with Covid 19.
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