%0 Conference Paper %A Habib, K. %A Majid, M.A.B.A. %A Sulaiman, S.A.B. %D 2013 %F scholars:3969 %I Institute of Physics Publishing %K Activated carbon; Adsorption; Cooling water; Waste heat, Adsorption chiller; Adsorption/desorption; Cooling water temperature; Cycle performance; Low-grade waste heat; Operating condition; Simulation program; Thermally driven, Cooling systems, activated carbon; adsorption; cooling; energy efficiency; performance assessment; regeneration; theoretical study %N 1 %R 10.1088/1755-1315/16/1/012084 %T Study on two stage activated carbon/HFC-134a based adsorption chiller %U https://khub.utp.edu.my/scholars/3969/ %V 16 %X In this paper, a theoretical analysis on the performance of a thermally driven two-stage four-bed adsorption chiller utilizing low-grade waste heat of temperatures between 50°C and 70°C in combination with a heat sink (cooling water) of 30°C for air-conditioning applications has been described. Activated carbon (AC) of type Maxsorb III/HFC-134a pair has been examined as an adsorbent/refrigerant pair. FORTRAN simulation program is developed to analyze the influence of operating conditions (hot and cooling water temperatures and adsorption/desorption cycle times) on the cycle performance in terms of cooling capacity and COP. The main advantage of this two-stage chiller is that it can be operational with smaller regenerating temperature lifts than other heat-driven single-stage chillers. Simulation results shows that the two-stage chiller can be operated effectively with heat sources of 50°C and 70°C in combination with a coolant at 30°C. © Published under licence by IOP Publishing Ltd. %Z cited By 1; Conference of 26th IAHR Symposium on Hydraulic Machinery and Systems ; Conference Date: 19 August 2012 Through 23 August 2012; Conference Code:95632