Three-dimensional absorption process in aqua-ammonia absorption refrigerators using helium as inert gas
- National Technical Univ. of Athens (Greece). Mechanical Engineering Dept.
In order to eliminate the danger of a possible explosion in neutral gas NH{sub 3}/H{sub 2}O absorption refrigerators using hydrogen as the inert gas, helium can be used as a substitute. A numerical procedure is presented for the calculation of the absorption process. In previous studies the problem was simplified by considering the circular absorption tube in a vertical position with the liquid NH{sub 3}/H{sub 2}O stream being of annular cross section, thus resulting in a two-dimensional situation. In the present study the three-dimensional heat and mass transfer process is considered, in which the absorption tube is nearly horizontal and the liquid NH{sub 3}/H{sub 2}O stream has a circular meniscus cross-section. The developed procedure which is based on a finite-difference solution of the three-dimensional momentum, energy and mass transport differential equations, may be used in the design of absorbers for inert gas absorption refrigeration units. It is concluded that helium behaves similarly to hydrogen and therefore it can replace it, in order to eliminate the danger of an explosion.
- OSTI ID:
- 483948
- Report Number(s):
- CONF-961105-; ISBN 0-7918-1527-7; TRN: IM9726%%341
- Resource Relation:
- Conference: 1996 international mechanical engineering congress and exhibition, Atlanta, GA (United States), 17-22 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the ASME Advanced Energy Systems Division. AES-Volume 36; Bittle, R.R. [ed.] [Texas Christian Univ., Fort Worth, TX (United States)]; Duncan, A.B. [ed.] [Marquette Univ., Milwaukee, WI (United States)]; Fiszdon, J. [ed.] [Mankato State Univ., MN (United States)]; Garimella, S. [ed.] [Western Michigan Univ., Kalamazoo, MI (United States)]; Herold, K. [ed.] [Univ. of Maryland, College Park, MD (United States)]; Nutter, D.W. [ed.] [Univ. of Arkansas, Fayetteville, AR (United States)]; O`Neal, D. [ed.] [Texas A and M Univ., College Station, TX (United States)]; Shiva Prasad, B.G. [ed.] [Dresser-Rand, Painted Post, NY (United States)]; Den Braven, K. [ed.] [Univ. of Idaho, Moscow, ID (United States). Dept. of Mechanical Engineering]; PB: 550 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
SOLOX coke-oven gas desulfurization ppm levels -- No toxic waste
Tritium purification via zirconium--manganese--iron alloy getter St 909 in flow processes