Experimental investigation of energy saving in air conditioning systems using silver nanofiuid

摘要

Application of methanol-silver nanofluid as the working fluid in thermosyphon heat exchanger in an air conditioning system was investigated and compared with the case where pure methanol is used as the working fluid and the rate of energy saving was calculated. First, the influence of two key parameters of the inlet air conditions namely dry bulb temperature and relative humidity, on the effectiveness of a 3-row heat pipe heat exchanger with pure methanol as the working fluid was investigated at pilot scale. Then the experiments were repeated using methanol- silver nanofluid as the working fluid. Experimental results showed that by using methanol-silver nanofluid, we will save around 8.8-31.5% of the energy by the evaporator and 18-100% by the condenser of thermosyphon heat exchanger. The results of this study are expected to lead to guidelines that will allow the improved performance of the air conditioning systems which reduce its energy consumption.