چكيده به لاتين
Granular activated carbon (GAC) has numerous applications in gas storage, ambient air and
water purification, chemical industrial processes, drug preparation, and so on. However, due to
its thermophysical properties, it has some other applications such as heat pumps, refrigeration,
and energy storage cycles which are yet to be developed. Because of its low conductivity, the
design of heat exchanger should be optimized and to do so, longitudinal fins are used.
In order to investigate the GAC’s thermal capacity, adsorption and desorption quantity, and
thermal properties in adsorption process, an optimized heat exchanger was manufactured.
Therefore, to evaluate heat transfer amount, some experiments including investigating the heat
exchanger shell temperature in different flow rates with respect to the different states of the
bed, such as vacuum through vacuum pump, air and methanol in carbons, and also the
temperature of the water in the tube were designed. Additionally, through using measurement
equipment, the investigation of adsorption amount and desorption process, the thermal
properties of the process, water temperature during adsorption process, Methanol pressure
during adsorption and desorption, and their amounts are carried out.
According to the obtained results from the experiments, it is revealed that the heat transfer
amount when Methanol exists in the bed, is higher compared to other states. Also, when the
flow rate is 15 lit/min, heat transfer is more enhanced compared to the 5 and 25 lit/min. In the
adsorption experiment, also it was found that if the water temperature in tube reaches to 60 oC,
there will be no adsorption in the system. In the desorption experiment it was found that to
extract the whole existing Methanol in the bed, all of the output valves should be opened and
closed several times.
