Consider the following statements
Indoor design conditions for air – conditioning system for energy conservation are
1. The lowest condition of temperature relative humidity and maximum air velocity are 200C, 25%
and 10 m/min respectively.
2. The maximum condition in summer is 250C, 55% and 15 m/min
3. When the building is not occupied during night the temperature may be lowered in winter and
increased in summer.
Which of these statements is/are correct?
(a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 3 only