Abstract:
The neutral temperatures for different locations in Sri Lanka have been established using actual climatic data. Based on these neutral temperatures, standard comfort zone for each of these locations have been identified on the psychrometric chart and their validation has been carried out using field measurements. These standard comfort zones have been then modified for two different internal air velocity levels and their validity too has been checked. This provides a method of extending the boundaries of these comfort zones thereby accommodating higher levels of dry bulb temperatures and humidities. This fact is utilised as the basis of minimising the energy demand in buildings either air-conditioned or not, by making use of combined modes at
different internal air velocities
