This title appears in the Scientific Report : 2007 

Performance measurements of a 7 mm-diameter hydrogen heat pipe
Abdel-Bary, M.
Abdel-Samad, S. / Kilian, K. / Ritman, J.
Experimentelle Hadronstruktur; IKP-1
Cryogenics, 47 (2007) S. 158 - 165
Amsterdam [u.a.] Elsevier Science 2007
158 - 165
Journal Article
Physik der Hadronen und Kerne
Cryogenics 47
Please use the identifier: in citations.
A gravity assisted heat pipe with 7-mm diameter has been developed and tested. to cool a liquid hydrogen target for extracted beam experiments at COSY. The liquid flowing down from the condenser surface is separated from the vapor flowing up by a thin wall 3 mm diameter plastic tube located concentrically inside the heat pipe. The heat pipe was tested at different inclination angles with respect to the horizontal plane. The heat pipe showed good operating characteristics because of the low radiation heat load from the surroundings, low heat capacity due to the small mass, higher sensitivity to heat loads (to overcome the heat load before the complete vaporization of the liquid in the target cell) due to the higher vapor speed inside the heat pipe which transfers the heat load to the condenser. (c) 2006 Elsevier Ltd. All rights reserved.