An Adsorption Air-Conditioning System to Reduce Engine Emissions and Fuel Consumption for Heavy-Duty Vehicles

An adsorption air conditioning system is proposed to provide cooling for heavy-duty vehicles. This system is powered by waste heat when the engine is running. When the engine is off, it can be operated by fuel fire heaters, a recently implemented technology to reduce the idling of heavy-duty vehicles. Hence, this system can not only reduce engine emissions but improve the overall engine efficiency. A model of the adsorption system using the zeolite-water working pair is developed and the system performance with different operating cycle is reported. The results show that the COP of the system increases with the length of the cycle period but the total cooling capacity decreases during the same period of operation. The dynamic performance of the system provides guidance for the system control and energy minimization.

[1]  Ruzhu Wang,et al.  Adsorption refrigeration- : An efficient way to make good use of waste heat and solar energy , 2006 .

[2]  X. Py,et al.  Activated carbon monolith of high thermal conductivity for adsorption processes improvement: Part A: Adsorption step , 2005 .

[3]  M A Lambert,et al.  Automotive Adsorption Air Conditioner Powered by Exhaust Heat. Part 2: Detailed Design and Analysis , 2006 .

[4]  T. J. Hendricks,et al.  Advanced thermoelectric power system investigations for light-duty and heavy duty applications. II , 2002, Twenty-First International Conference on Thermoelectrics, 2002. Proceedings ICT '02..

[5]  P. L. Fan,et al.  Regulations and Standards , 2009 .

[6]  Greg Rideout,et al.  The Impact of Retrofit Exhaust Control Technologies on Emissions From Heavy-Duty Diesel Construction Equipment , 1999 .

[7]  Brian Agnew,et al.  Combined power and cooling, an analysis of the combined Diesel-absorption cycle , 1999 .

[8]  Wolfgang Knecht,et al.  Development of EGR Coolers for Truck and Passenger Car Application , 2001 .

[9]  M A Lambert,et al.  Automotive Adsorption Air Conditioner Powered by Exhaust Heat. Part 1: Conceptual and Embodiment Design , 2006 .

[10]  Le Zhang,et al.  Design and testing of an automobile waste heat adsorption cooling system , 2000 .

[11]  Gerhart Eigenberger,et al.  Measurement and Modeling of Water Vapor Adsorption on Zeolite 4A—Equilibria and Kinetics , 2004 .

[12]  Brian Agnew,et al.  Energy recovery from diesel engine exhaust gases for performance enhancement and air conditioning , 2002 .

[13]  Stacy Cagle Davis,et al.  Transportation Energy Data Book: Edition 28 , 2009 .

[14]  Harry Dwyer,et al.  Effect of advanced aftertreatment for PM and NO(x) control on heavy-duty diesel truck emissions. , 2009, Environmental science & technology.

[15]  Linda Gaines,et al.  Estimation of Fuel Use by Idling Commercial Trucks , 2006 .