THERMODYNAMIC SIMULATION OF YEAR ROUND AIR CONDITIONING SYSTEM FOR VARIABLE ROTATIONAL SPEED OF DESICCANT WHEEL

Shankar Kumar, S.P.S. Rajput, Arvind Kumar

Abstract: This paper presents a study on different kinds of air conditioning systems in association to existing one to use through of the year. The system have generally desiccant wheel, evaporative cooler, heating coils and cooling coil. Mainly the system imparts all three regular weather conditions. Like hot and dry, hot and wet and cool and dry. For this the out let condition will be fixed 25 dry bulb temperature (DBT) and 50% relative humidity. In the present paper, for maintaining room condition thermodynamic simulation is being done. If rotational speed of desiccant wheel is changed, the year round air conditioning equipments change own parameter to maintain the room condition .The paper also shows the variation in supply condition of air, volume of cellulose cooling pad of evaporating cooler, temperature of cooling coil in hot and wet weather conditions with respect to rotational speed of desiccant wheel (6 to 24rph).The outlet temperature of desiccant wheel increases 52.96 to 63.28°C.The efficiency of desiccant wheel increases where as saturation efficiency of evaporative cooler decreases. The volume of cooling pad decreases from 547.99 to 439.54 cm3 w.r.t. the rotational speed of desiccant wheel. The DBT and the specific humidity of supply air remain constant with the change of rotational speed of desiccant wheel.

Keywords: Heating coil, Cooling coil, Desiccant Wheel, Cellulose cooling pad, Supply condition.

DOI: https://doi.org/10.15623/ijret.2015.0409052