t is required to select a suitable blower for the air conditioning system of a tourist bus. The blower takes in fresh air from the atmosphere, passes it across the air conditioning coils and delivers the cooled air through small nozzles inside the bus. An exhaust fan then removes the used air from the bus cabin. The other relevant information are gives below; Capacity of the bus ----- 45 seats Solar radiation through the windows -- 8 KW Heat infiltration through the roof, side and floor of the bus --- 12 KW Specific enthalpy of cooled air entering the bus through nozzles ----289 kJ/kg Specific enthalpy of used air leaving the bus through the exhaust fan ---- 310 kJ/kg Body heat per adult --- 115 W Under steady state cond
It is required to select a suitable blower for the air conditioning system of a tourist
bus. The blower takes in fresh air from the atmosphere, passes it across the air
conditioning coils and delivers the cooled air through small nozzles inside the bus.
An exhaust fan then removes the used air from the bus cabin. The other relevant
information are gives below;
Capacity of the bus ----- 45 seats
Solar radiation through the windows -- 8 KW
Heat infiltration through the roof, side and floor of the bus --- 12 KW
Specific enthalpy of cooled air entering the bus through nozzles ----289 kJ/kg
Specific enthalpy of used air leaving the bus through the exhaust fan ---- 310
kJ/kg
Body heat per adult --- 115 W
Under steady state conditions determine the mass flow rate of air handled by the
blower when
a. the bus is empty
b. the bus is full
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