Nair, S. R.Goyal, M.Ahmed, N.Menon, R. S.Rane, T.2016-06-072016-06-072015Indian Journal of Cryogenics, 2015. Vol. 40: pp. 24-28http://hdl.handle.net/123456789/131074290 bytestext/htmlenExternal Helium PurifierHelium liquefierhelical coil heat exchangercharcoal adsorberDevelopment and performance evaluation of external helium purifierArticle