Evaluation of thermal load reduction and effect to indoor environment by hybaid ventilation system

Hybrid ventilation system executes natural ventilation while operating air-conditioning system. The number of the system appreciation has been increasing, but the change of thermal load by the operation method is not estimated precisely, which leads to less reliability in energy conservation effect. It is also important to consider indoor thermal environment when ventilation openings are located in occupied zone of the building. In this paper, slab temperature of the simulation is compared to the measured value, which shows good coincidence between simulation and measurement. The change of thermal load and indoor environment is evaluated by the simulation, and appropriate operation method is discussed.