He gas 1. Better than international electrical standards. 2. The preferential price 3. High credibility.
He gas
Helium
A colourless, odourless and tasteless gas. Nonflammable, non-toxic, slightly soluble in water, is a kind of simple choking agents. The relative density ds (212 0.138 °C). Gas density 0.165 kg/m3 (212 101.3 °C, kPa); Liquid density 124.98 kg/m3 (268.90 °C, kPa 101.3 -). Boiling point - 268.9 °C. Advice from natural gas, at first the helium add oxygen, the catalytic dhea with expansion machine, high-pressure condensing adsorption refrigeration cycle.ashrae making high purity helium. From the air, will ask helium device for 90% of the neon helium concentration, the low temperature adsorbing mixture of helium, neon separation, can get 99.9 coarse helium, then after copper oxide furnace than hydrogen, low temperature adsorption, made for 99.999% purity helium concentration. Also available from ammonia exhaust advice helium. In the semiconductor industry, helium ge and silicon crystals used to generate the protection of the gas mixture, some angry, cleaning, shielding and compression system inert gas, gas chromatography, gas carrier gas welding protection, filling helium spacecraft; As gas in atomic reactor coolant, gas thermometer, integrating leak detection measurement, magnetic resonance imaging scanners; In space technology used for liquid hydrogen charging system on the displacement, satellites and rockets extrusion with air and self-controlled engine air, helium chiller. In the future, helium, mainly used for low temperature technology in synchrotron and turn the accelerator research and development, and the helium dosage will increase.
Helium
