Design and performance prediction of a novel double heat pipes type adsorption chiller for fishing boats

A novel double heat pipe type adsorber, which uses compound adsorbent of CaCl2 and expanded graphite to improve the adsorption performance, is designed. The double heat pipes are integrated into the adsorbers in order to solve the problem of the corrosion between seawater and the steel adsorber in ammonia system and improve the heat transfer performance of the adsorber. There are two kinds of heat pipes integrated with the adsorber. One is the split type heat pipe for heating the adsorber in desorption phase, the other one is the two-phase closed thermosyphon heat pipe for cooling the adsorber in adsorption phase. The performance of two-adsorber adsorption chiller integrated with double heat pipes is predicted. The heat transfer performance of the heat pipes can meet the heat demands for adsorption/desorption of the adsorbent when the heating/cooling time is 720s and mass recovery time is 60s. When the exhaust gas temperature is 550°C, the cooling water temperature is 25°C, the inlet and outlet chilled water is −10 and −15.6°C, respectively; the simulation results show that the cooling power and COP of this adsorption system are 5.1kW and 0.38, respectively.

[1]  F. Meunier,et al.  Second law analysis of a solid adsorption heat pump operating on reversible cascade cycles: Application to the Zeolite-water pair , 1985 .

[2]  Ruzhu Wang,et al.  Effective thermal conductivity of expanded graphite–CaCl2 composite adsorbent for chemical adsorption chillers , 2006 .

[3]  R. Wang,et al.  Research on a compact adsorption room air conditioner , 2006 .

[4]  Ruzhu Wang,et al.  A new type adsorber for adsorption ice maker on fishing boats , 2005 .

[5]  D. C. Wang,et al.  A review on adsorption refrigeration technology and adsorption deterioration in physical adsorption systems , 2010 .

[6]  Francis Meunier,et al.  Solid sorption heat powered cycles for cooling and heat pumping applications , 1998 .

[7]  Ruzhu Wang,et al.  Performance analysis of an adsorption refrigerator using activated carbon in a compound adsorbent , 2006 .

[8]  L. L. Vasiliev,et al.  Solar-gas solid sorption heat pump , 2001 .

[9]  Ruzhu Wang,et al.  A consolidated calcium chloride-expanded graphite compound for use in sorption refrigeration systems , 2007 .

[10]  Limin Chen,et al.  The adsorption refrigeration characteristics of alkaline-earth metal chlorides and its composite adsorbents , 2009 .

[11]  Ruzhu Wang,et al.  A comparison of the performances of adsorption and resorption refrigeration systems powered by the low grade heat , 2009 .

[12]  Ruzhu Wang,et al.  Study of a novel silica gel-water adsorption chiller. Part II. Experimental study , 2005 .

[13]  Ruzhu Wang,et al.  Studies on split heat pipe type adsorption ice-making test unit for fishing boats: Choice of heat pipe medium and experiments under unsteady heating sources , 2006 .

[14]  Ruzhu Wang,et al.  Efficient adsorption refrigerators integrated with heat pipes , 2008 .

[15]  L. W. Wang,et al.  Split heat pipe type compound adsorption ice making test unit for fishing boats , 2006 .

[16]  Ruzhu Wang,et al.  Composite adsorbent of CaCl2 and expanded graphite for adsorption ice maker on fishing boats , 2006 .

[17]  Ruzhu Wang,et al.  Adsorption mechanism and improvements of the adsorption equation for adsorption refrigeration pairs , 1999 .

[18]  Ruzhu Wang,et al.  Study of a novel silica gel-water adsorption chiller. Part I. Design and performance prediction , 2005 .

[19]  L. L. Vasiliev,et al.  New solid sorption refrigerator , 1998 .

[20]  F. Meunier,et al.  Solid sorption: An alternative to CFCs , 1993 .