Answer Happy

For Questions 1 to 3 A sample of moist air with a volume of 5 m3 has a dry bulb temperature of 26°C and a relative humidity of 50%. The total pressure is 99 kPa. Question 1 What is the humidity ratio of air in kg of vapor per kg of dry air? (A) 0.01050 (B) 0.01075 0.01064 Question 2 What is the mass of dry air in kg in the room? A) 5.67 kg (B) 5.76 kg (C) 7.65kg
Question 3 What is the enthalpy of the moist air in kJ per kg of dry air? (A) 53.40 kJ/kga (B) 54.30 kJ/kga (C) 52.76 kJ/kg Question 4 Supply air at 18°C dry-bulb and RH of 80% flows through a duct whose inside wall temperature is about 11°C. Will water droplets form inside the duct? (A) Yes B No (C) Can't be determined from the given information.