Chapter 18, Problem 3P

In the figure shown below, it is desired to pump 5408732 lit/day of water from a stream to a pool. El. A = 60m while El. B = 92 m. If the combined pump and motor efficiency is 81%, calculate the monthly power cost in pesos if electricity rate is P12 per kW-hr. Assume that the pump operates for 24 hours and take 1 month = 31 days; Pipe 1: 1613 m, 223 mm, 128 (Length, diameter, Hazen Coefficient) Pipe 2: 1987 m, 287 mm, 123 (Length, diameter, Hazen Coefficient) Pipe 3: 813 m, 206 mm, 134 (Length, diameter, Hazen Coefficient)   Round your answer to 4 decimal places.

Suppose the pump of Fig. is situated between two water tanks with their free surfaces open to the atmosphere. Which free surface is at a higher elevation—the one corresponding to the tank supplying water to the pump inlet, or the one corresponding to the tank connected to the pump outlet? Justify your answer through use of the energy equation between the two free surfaces.

For a building located in Madrid, Spain with annual heating degree-days (dd) of 4654, a heating load (heat loss) of 30,000 kj/h, and a design temperature difference of 30° C (20° C indoor), estimate the annual energy consumption. If the building is heated with a furnace with an efficiency of 92%, how muchgas is burned to keep the home at 20° C? State your assumptions.

An ESP is to he designed to treat 9000 m3/min of gas to remove particles at 99.8% efficiency. Using Figure 5.10, estimate the required corona power in kW.

What is the cost to pump 1000 liters of water to the top of a 30 m high water tank? Assume a pumping efficiency of 50% and an electrical cost of $0.15 per KW-h. P(h2O) = 1000 ?g/m^3 .   1 m^3 = 1000 liters