OUTDOOR DESIGN CONDITIONS FOR HVAC SYSTEM-DESIGN AND ENERGY ESTIMATION FOR BUILDINGS IN HONG-KONG

Outdoor design conditions are important for heating, ventilating and a ir-conditioning (HVAC) system design and energy estimation for buildin gs. A research study on the determination of outdoor design conditions for HVAC applications in Hong Kong is presented here. Methods for det ermining outdoor design conditions are examined and the existing data for Hong Kong are studied. New design data developed from the latest w eather database compiled for Hong Kong are provided. The characteristi cs of the Hong Kong climate are studied from the 33-year long-term sta tistical distributions of its hourly dry-bulb and wet-bulb temperature s. Significance, properties and proper selection of outdoor design con ditions for HVAC design are then discussed. It is hoped that designers can assess critically the outdoor design conditions they have taken f or granted for their building design and evaluate suitable data for de sign weather based on their applications and risk levels.