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Determine the coil load, circulation and ventilation airflow rates, and thermodynamic states for a CAV system at design conditions for a commercial office building. The design ambient conditions are 92 F dry bulb and 78 F wet bulb. The building can be treated as a single zone with a total zone load of 500,000 Btu/hr and a sensible heat ratio of 0.8. The design occupancy is 80 people and the corresponding ventilation air flow rate is 1600 cfm, which is based on 20 cfm of outdoor air per person. The zone temperature thermostat setting is 77 F, which is within the summer comfort zone. The bypass factor for the coil is 0.175 and the chilled water temperature is 50 F.
Determine the coefficient of friction between the pin and the surface of the hole. normal to the tapered pin surface remains unchanged until the pin actually moves.
a carnot cycle heat engine using 1 kg of air has the following conditions heat addition beginning at 15 mpa and 1200 k
what is the ratio of the flowrates through the straws? Assume the drink is viscous enough to ensure laminar flow and neglect gravity.
A temperature measurement device is calibrated to produce 4-20 mA for a temperature operation range of 0-100 degree C. Sketch the input-output characteristic chart of the device, assuming linear input/output relationship.
1.water flows at 50oc inside a 2.5-cm-inside-diameter tube such that hi 3500 wm2 oc. the tube has a wall thickness of
a 50 lb. weight is attached to the end of a 10 inch long beam e30106 psi which is 1 inch wide and 14 and inch deep and
Determine the magnitude and direction of the force P.
A room has 1000 ft2 of surface, of which 120 ft2 is to be heated, and the balance has an average surface temperature of 60°F. The air temperature in the room is 68°F. The room is occupied by light clothed adults at rest. Determine the surface tempera..
A 1-m tank contains air at 10oC and 350 kPa is connected through a valve to another tank containing 3 kg of air at 35oC and 200 kPa. Now the valve is opened, and the entire system is allowed to reach thermal equilibrium with the surroundings, which i..
In a turning operation the feed rate t is .13 mm (.005 in.) and the depth of cut normal to the plane of the paper is 2.5mm (.100 in). The cutting speed is 245 m/min (800 fpm). The cutting force F_c is found to be 1780N (400lb) and the normal force F_..
a cylindrical rod of an unknown material is subject to a force of 20000n. the cross sectional area is 0.5 cm2 and is of
the simple steam power cycle in prob 4.23 in modified in the following way. steam entering the turbine is expanded to
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