1.What is the formula to find how many gals./ min. would dicharge from a 2 inch dia. hole at 5PSI (with a constant water supply and no friction involved)? Would the same formula apply to any size hole ( ex. 1/2" or 3")?
2.To find the flowrate you have to draw the system curve to find the intersection. How do you find the system curve?
3.A room having a total heat gain of 35,000 btuh is to be maintained at 80 DB and 62 WB. the air is supplied to the room at 60 DB and 55 WB. find the quanity of air to be supplied.
1690 cfm
1500 cfm
1850 sfm
1900 sfm
4.Find the cooling load (in tons of refrigeration) for a room supplied with 10,000 CFM of 95 DB outside air with ratio of 105 gr/lb. The room is to be maintained at 78 DB and humidity ratio of 71.5 gr/lb. The room calculated sensible heat load is 108,000 BTUH and latent load of 30,000 BTUH
34.8 tons
46.3 tons
38.5 tons
73.4 tons
5.The total heat loss from a building equals the heat load or the amount of heat that must be put into the building by the heating system to offset the losses and maintain the proposed comfort zone. The total building heat loss is calculated from losses by which of the following?
A. Conduction
B. Convection
C. Radiation
D. All of the above