Design of Indoor CO2 Adsorption System for Car and its Performance under Various Driving Conditions

초록

Though indoor CO2 in car is not seriously harmful for passengers in most cases, exposure under high concentration of CO2 is dangerous since it may cause various adverse effects, e.g., headache, sleepiness, lower concentration, during driving. In this study, a small and simple CO2 adsorption system for car was designed, and its performance was evaluated by applying to the car. CO2 concentration in car did not exceed 1,000 ppm mostly. However, when the ventilation mode was off, indoor CO2 concentration exceeded 1,000 ppm mostly. Especially, when the car speed was lower, CO2 concentration was higher. It means this system is more effective when the car is driving in downtown area with serious traffic congestion. Three passengers were on board, and CO2 concentration change with or without the operation of this system was monitored. Number of fans, amount of loaded CO2 adsorbent, location of installation site in the car was changed, and their effects on CO2 concentration change was extensively investigated.