Thermal effect of the adsorption heat on an adsorbed natural gas storage and transportation systems

This paper experimentally studies the thermal effect that results from the adsorption heat on both the charge and discharge performance of adsorbed natural gas (ANG) storage and transportation systems. Two storage tanks built with temperature systems and security control were used during the adsorption and desorption process. Temperature, flow rate and discharge amount were recorded experimentally at 2, 3 and 4 MPa adsorption pressures, using different activated carbon (AC) as an adsorbent bed. Results show that the central region of the adsorbent bed suffers from the severest temperature fluctuation of the charge and discharge process. It was observed that the best discharged amount was 4 MPa using, G1220 Extra AC as an absorbent bed. Conclusions detected that it is possible mitigate the temperature fluctuations with improved AC properties and the amount of NG desorbed is linearly proportional to the respective tank’s hydraulic volumes.