Experimental and numerical investigation on temperature and air velocity distribution in a room equipped with split-system air conditioner.

Split-system air conditioning is increasingly usedapplications, owing to its low cost and installationboth for residential and commercialease. The indoor split-system unit iscommonly of the wall-mounted type and, due to its dimensions and position, very often itgives rise to appreciable air velocities and temperature gradients in the occupied zone of theroom. This work reports and discusses some experimental data collected in a test room withwall-mounted indoor unit, under different operating conditions. A CFD numerical model hasbeen developed and assessed on the basis of the experimental data; the model can be appliedto investigate the influence of different parameters such as air flow rate and velocity, inlet airtemperature, position of the unit, direction of air flow etc. From the results of parametricanalyses some conclusions can be drawn, with reference to comfort conditions, useful toimprove the design and construction of this type of air conditioning equipment and to developmore efficient installation criteria.