Reservoir A renewable energy system (it can be solar or wind) does not produce power all...
What is the importance of batteries in using renewable energy such as solar and wind power? Batteries are very energy dense. Batteries provide energy even when it's dark and the wind is not blowing. Batteries can be charged when energy is abundant and discharged when energy is not. Batteries can keep electricity flowing even when a cloud passes over head and reduces electricity production from solar panels. Batteries last forever (or at least a long time).
The pump-turbine system in Figure 4 draws the water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoir to restore the situation. For the design flow rate of 0.157m3/s, the friction head loss, hL=4vA2/(2g). Determine the jet velocity at A. Find the friction head loss in the system. Estimate the energy head in meters delivered by the pump at night. Estimate the power in kW delivered...
The piping system shown in the Figure (which does not show details of all the fittings) is used to connect a large reservoir to a pump where it is then pumped to a small wilderness hostel. The pipe is 2-in. I.D. cast iron and must deliver 80 gal/min of 60°F water. The 300 ft long pipeline contains four swing check valves and five 90° standard elbows. All connections are threaded. Find the head loss between points 1 and 2. Well-rounded...
The piping system shown in the Figure (which does not show details of all the fittings) is used to connect a large reservoir to a pump where it is then pumped to a small wilderness hostel. The pipe is 2-in. I.D. cast iron and must deliver 80 gal/min of 60°F water. The 300 ft long pipeline contains four swing check valves and five 90° standard elbows. All connections are threaded. Find the head loss between points 1 and 2. Well-rounded...
An energy storage system uses the excess power available overnight to pump water 50 metersup a hillfrom alake and into a reservoir. During the day, when extra power is required, the water is then released through a turbine and generateselectricity1. In this system, as shown in the figure, a pump with an efficiency of 80% is used to transfer the water up the hill. a.How much energy is required to move the water up the hill [kJ/kg]?. b.How much power...
3. In a small hydroelectric power station, the turbine uses the energy of the water in the reservoir behind the dam to produce 12000 horsepower. The circular channels before and after the turbine have a diameter of 90 inches. If the head loss across the dam can be calculated from hloss=cV²/2g where c=8 and V is the water velocity in the circular channel, calculate the volumetric flow rate, Q, through the system and the corresponding head loss for h=400 ft...
Question 22 4 pts If all the batteries currently present in the world were fully charged and connected to supply the world's energy, how long could we run the world on this system? Less than one hour About one day A few weeks About one month More than one month Flag this Question Question 23 4 pts What is the importance of batteries in using renewable energy such as solar and wind power? Batteries are very energy dense. Batteries provide...
A pump transports water from Tank 1 to Tank 2 through a constant-diameter piping system as shown below (not to scale). The flow rate is controlled by two gate valves, the gate valve I controls the main pipeline, while the gate valve II controls the loop line from T-joint A to T-joint B. All pipes are galvanized steel pipe of diameter D = 4 in. It has a total length of Li2= 620 ft from tank 1 to tank 2....