Analysis of performance and exergy efficiency of rotary wheel

The exergy efficiency model of rotary wheel is presented,and the exergy and exergy efficiency of channel are analyzed using a one-dimensional coupled heat and mass transfer mathematical model and experimental setup based on adsorption channel.The factors of influence on the performance and exergy efficiency,the number of transfer units(NTU),the rotary speed and the regenerative temperature,are investigated using exergy efficiency model,and results show the exergy efficiency is lower because the proportion of chemical exergy component,which is interest,is low,and recovery thermal exergy of regenerative process can rise its exergy efficiency.When the NTU is in 0～2.5,both the performance and exergy efficiency increase rapidly with an increasing NTU,however,when the NTU is bigger than 2.5,a further increasing of NTU will have little merit.Both the performance and exergy efficiency are the biggest under the optimal rotary speed.The power of dehumidification increases and exergy efficiency decreases when regenerative temperature is rising.