Water flows through a shower head steadily at a rate of 8 kg/min. The water is...

Water flows through a shower head steadily at a rate of 8 kg/min. The water is heated in an electric water heater from 158C to 458C. In an attempt to conserve energy, it is proposed to pass the drained warm water at a temperature of 388C through a heat exchanger to preheat the incoming cold water. Design a heat exchanger that is suitable for this task, and discuss the potential savings in energy and money for your area.

Expert Solution

samet mamat answered 2 years ago

3) Air flows steadily at the rate of 0.4 kg/s through an air compressor, entering at...

3) Air flows steadily at the rate of 0.4 kg/s through an air compressor, entering at 6 m/s with a pressure of 1 bar and a specific volume of 0.85 m3/kg, and leaving at 4.5 m/s with a pressure of 6.9 bar and a specific volume of 0.16 m3/kg. The internal energy of air leaving is 88 kJ/kg greater than that of the air entering. Cooling water in a jacket surrounding the cylinder absorbs heat from the air at...

A shower head pumps water into a process at the rate of 5 gallons per minute....

A shower head pumps water into a process at the rate of 5 gallons per minute. Upon inspection, it is learned that the shower head pumps at a rate described by the uniform distribution over the interval 4 to 6 gallons per minutes. a. Find the variance of the distribution. variance= 0.333 ? b. Find the mean of the distribution. mean= 5 c. What proportion of the time does the machine pump more than 6.5 gallons per minute? d. Would...

Water flows steadily through a splitter as shown in the figure with Q, = 0.08 m³...

Water flows steadily through a splitter as shown in the figure with Q, = 0.08 m³ / sec, Q, = 0.05 m3 / sec, D, = D2 = 12 cm, D3 = 10 cm. If the pressure readings at the inlet and outlets of the splitter are P, = 100 KPa, P2 = 90 KPa and P3 = 80 KPa, determine external force needed to hold the splitter. Disregard the weight effects.

Water flows at a rate of 28 L/min through a horizontal 7.5-cm-diameter pipe under a pressure...

Water flows at a rate of 28 L/min through a horizontal 7.5-cm-diameter pipe under a pressure of 8.1 Pa. At one point, calcium deposits reduce the cross-sectional area of the pipe to 33 cm^2. What is the pressure at this point? (consider the water to be an ideal fluid.)

A liquid of density 1.33 × 103 kg/m3 flows steadily through a pipe of varying diameter...

A liquid of density 1.33 × 103 kg/m3 flows steadily through a pipe of varying diameter and height. At location 1 along the pipe the flow speed is 9.09 m/s and the pipe diameter is 10.9 cm. At location 2 the pipe diameter is 14.3 cm. At location 1 the pipe is 9.75 m higher than it is at location 2. Ignoring viscosity, calculate the difference between the fluid pressure at location 2 and the fluid pressure at location 1.

A brine solution of salt flows at a constant rate of 8 L/min into a large...

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Calculate the head loss if the water is discharged through a 2,000 ft 8” steel pipe...

Calculate the head loss if the water is discharged through a 2,000 ft 8” steel pipe and a 1,500 ft 6” cast iron pipe at the discharge rate of 1.63 cfs; The 8 inch pipe has a square-edged entrance; a swing check valve; fully opened gate valve; contraction (20 degree); The 6 inch pipe has 6 - 45 deg. elbows; 2 - 90 deg. bends; 1 r=1 ft; 1 r=2ft. Use Hazen-Williams equation to calculate the head loss of the...

Water flowing at a rate of 100 Kg/min at 100 oC and 20 bars is heated...

Water flowing at a rate of 100 Kg/min at 100 oC and 20 bars is heated at constant pressure to 400 oC. What are the initial and final phases of the water (subcooled liquid, saturated liquid, saturated steam, or superheated steam)? (saturation temperature of water at 20 bars is 212.4 oC).

a) Water (Densitywater = 1,000 kg/m3) flows through a pipe that narrows. At point A it...

a) Water (Densitywater = 1,000 kg/m3) flows through a pipe that narrows. At point A it is determined that the water flows with a velocity of VA = 93 m/s. At point B it is determined that the water flows with a velocity of VB = 193 m/s.What is the nagnitude of the difference in pressure between points A and B. b) Two trains pass each other. Train A is traveling 36 m/s east. Train B is traveling 23 m/s...

Water flows steadily from an open tank as shown in the figure

Water Flowing from a Tank Water flows steadily from an open tank as shown in the figure. (Figure 1) The elevation of point 1 is \(10.0 \mathrm{~m},\) anc the elevation of points 2 and 3 is \(2.00 \mathrm{~m}\). The crosssectional area at point 2 is \(4.80 \times 10^{-2} \mathrm{~m}^{2} ;\) at point 3 where the water is discharged, it is \(1.60 \times 10^{-2} \mathrm{~m}^{2}\). The cross-sectional area of the tank is very large compared with the cross-sectional area of the...

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