Comfort conditions

1. Temperature ( DBT ) : 25 C in summer , 5 C in winter
2. Humidity ( RH) 70% in humid day , 40 % in dry day
3. Sound ( sound level) : 70 dB busy office , 30dB quiet room
4. Lighting ( illiuminance ) : 10,000 lux shop display , 400 lux office lighting , 50 lux hallway