Define relative humidity, degree of saturation, specific humidity and dew point temperature.
Define ASHRAE comfort zone. What factors are caused for comfort air conditioning? Discuss in brief.
Define by-pass factor and contact factor. Describe the heating and humidification process.
Differentiate between sensible heating and sensible cooling process.
What are the causes of spoilage of food? Why it need to preserve? Explain.
What are the basic elements of controlling of air conditioning? Discuss their functions.
Briefly discuss the acoustic design in building air conditioning.
What are the key factors for comfort air conditioning?
Define Psychrometry and Psychrometric processes. Enlist the Psychrometric processes. Briefly describe two of the Psychrometric processes.
Moist air of DBT 32°C and WBT 25°C mixes adiabatically with another stream of moist air of DBT 12°C and WBT 5°C at atmospheric pressure. The mass flow rates of the steams are 4 kg/s and 3 kg/s respectively. What will be the DBT, WBT and specific humidity of the mixture?
Define metabolic rate and define also mechanism of body heat loss.
Define comfort air conditioning. Describe the indoor design condition of air conditioning for different application.
Define solar constant and its correction factor. Which types of solar radiation comes into the building?
The atmospheric air at 25°C DBT and 10°C WBT is flowing at the rate of 100m³/min through the duct. The dry saturated steam at 100°C is injected into the air stream at the rate of 70 kg/hr. Calculate the specific humidity and enthalpy of the leaving air.
What are the basic elements of air-conditioning control system? Discuss the self-actuated air-conditioning control system with figure.
Calculate the sound power level of (i) a whisper that emits of 1 MW and (ii) a rocket engine that emits 12 MW.
What are the essential components of air conditioning system? Write their functions.
Define the basic element of controlling of air conditioning. Discuss their function.
Calculate the sound power level of (i) a whisper that emits a power of 1MW and (ii) a rocket engine that emits 10 MW.