Experimental and thermodynamic investigation of an ammonia/water diffusion absorption machine

Abstract In this paper the results of experimental and thermodynamic investigations on a commercial absorption diffusion device are presented. Two alternative experimental methods, steady state and dynamic method, are used to evaluate the characteristics and the cooling capacity of the machine. All essential features of the machine are determined specially the overall heat transfer coefficients (UA) ext and (UA) int , respectively, 0.43 W K −1 and 0.21 W K −1 . The tests are performed under practical interior ambient air conditions and variable heat loads. For a heat supply of 42 W and a generator temperature of 185 °C, a COP of 0.12 is found.

[1]  Kwang J. Kim,et al.  Performance enhancement of a diffusion-absorption refrigerator , 1996 .

[2]  F. Gutiérrez,et al.  Behavior of a household absorption-diffusion refrigerator adapted to autonomous solar operation , 1988 .

[3]  P. Bourseau,et al.  Réfrigération par cycle à absorption-diffusion: comparison des performances des systèmes NH3H2O et NH3NaSCN , 1986 .

[4]  Uli Jakob,et al.  Simulation and experimental investigation into diffusion absorption cooling machines for air-conditioning applications , 2008 .

[5]  Giuseppe Starace,et al.  An advanced analytical model of the Diffusion Absorption Refrigerator cycle , 2012 .

[6]  A. Bellagi,et al.  Energetic and exergetic analysis of a commercial ammonia?water absorption chiller , 2011 .

[7]  Avi Levy,et al.  The influence of diffusion absorption refrigeration cycle configuration on the performance , 2007 .

[8]  Guangming Chen,et al.  A numerical investigation of a diffusion absorption refrigerator operating with the binary refrigerant for low temperature applications , 2011 .

[9]  H. Valizadeh,et al.  A continuous cycle solar thermal refrigeration system , 1996 .

[10]  Avi Levy,et al.  Numerical investigation of a diffusion absorption refrigeration cycle , 2005 .

[11]  Reinhard Radermacher,et al.  Absorption Chillers and Heat Pumps , 1996 .

[12]  Weibin Ma,et al.  Performance analysis of a diffusion absorption refrigeration cycle working with TFE―TEGDME mixture , 2013 .

[13]  Giuseppe Starace,et al.  An enhanced model for the design of Diffusion Absorption Refrigerators , 2013 .

[14]  Satha Aphornratana,et al.  Investigation of a diffusion absorption refrigerator , 2002 .