Water at 60°F and one atmosphere is being transferred from tank 1 to tank 2 with a 2-hp pump that is 75% efficient, as shown in Figure 8-7. All the piping is 4-inch schedule 40 steel pipe except for the last section, which is 2-inch schedule 40 steel pipe. All elbows are 4-inch diameter, and a reducer is used to connect to the 2-inch pipe. The change in elevation between points 1 and 2 is z2 - z1 = 60 ft. Tank 1 6 ft 4-inch 15 ft 4-inch 300 ft 4-inch 150 ft 4-inch Pump Tank 2 xnoot 90° Elbow = Reducer All piping is schedule 40 steel with diameters given. Figure 8-7 Pipe and Pump Network Calculate the expected flow rate in gal/min when all frictional losses are cor Repeat part (a) but only consider the frictional losses in the straight Dide who

Water at 60°F and one atmosphere is being transferred from tank 1 to tank 2 with a 2-hp pump that is 75% efficient, as shown in Figure 8-7. All the piping is 4-inch schedule 40 steel pipe except for the last section, which is 2-inch schedule 40 steel pipe. All elbows are 4-inch diameter, and a reducer is used to connect to the 2-inch pipe. The change in elevation between points 1 and 2 is z2 - z1 = 60 ft. Tank 1 6 ft 4-inch 15 ft 4-inch 300 ft 4-inch 150 ft 4-inch Pump Tank 2 xnoot 90° Elbow = Reducer All piping is schedule 40 steel with diameters given. Figure 8-7 Pipe and Pump Network Calculate the expected flow rate in gal/min when all frictional losses are cor Repeat part (a) but only consider the frictional losses in the straight Dide who

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

See similar textbooks

Similar questions

Water is pumped to a storage tank from a pool by a centrifugal pump. The elevation difference between the pool and the storage tank is 60 m. The stórage tank and the pool are open to atmosphere. 50 meters of 6 in Sc 40 steel pipe is used between pool andpump. After the pump 6 in Sc 40 pipe with a length of 22 m is suddenly contracted to 4 in Sc 40 pipe, that is 70 m. The flow rate of water is 2.5 m/min and the temperature is 20°C. If the pump efficiency is 0.6 and the cost of electrical energy is 0.40 TL/kWh,calculate daily cost of electricity used for this system
The old Hydraulics laboratory in Mechanical Engineering used a roof tank tosupply apparatus with water at a nearly constant head. The water wascollected in an under floor sump, and then pumped back to the roof tankafter the experiment. The flow rate was 10 litre s-1. The tank was 6m abovethe sump, and the length of the pipe route was 15 m. The old 6” pipes arenow heavily corroded (k = 7.5 mm). The old pump has been scrapped. Whathead ΔH would be specified for a pump to restore the system using the oldpipes? What would the pump power be? If the pipes were replaced with 150mm diameter PVC pipes, what pump ΔH would be required?
The Figure shown below is a parallel pipeline system with two branches used to supply lubricating water to the bearings. The main line and two branches use the same size of pipes. The pressures at section 1 and section 2 are and , respectively. The resistance coefficents for two bearings are and . The cross section areas of two branch pipes are . The engergy loss caused by friction can be ignored. The engergy loss cuased by one bend is . (2) Calculate the total engery loss for section 1 and 2_________
Please include a diagram.A pump supplies water at a flow rate of 4ft3/s from an open reservoir through a horizontal 8-in sched 40 pipe. The head loss from the reservoir to the suction of the pump is 2 ft-lbf/lbm, and the discharge is at 90 psig into a 6-in sched 80 pipe. The pump has an efficiency of 65% answer the following:a.) The head that must be delivered by the pump to the water is ________ or energy developed by the pump or output energy of the pumpb.) input energy to the pumpc.) Rated power of the pump in kW
A gardener is thinking of installing piping system for watering the plants in his garden located near a water reservoir. The reservoir is located at an elevation of 150 m above from the surface, as shown in figure. The diameter of pipe (cast iron) is constant equal to 15 cm and total length of pipe is 180 m. It is desirable that the exit velocity of water to the garden should not exceed 5 m/sec and water is at atmospheric pressure and temperature is 20°C. The gardener is planning to open the valve for 3 hours daily. Calculate the followings: a) How much volume of liquid can be drawn from reservoir in a day? b) How much total irreversible head loss will be occurred in the system?
A geothermal well produces from total depth at 1000m and produces dry (saturated) steam with a temperature of 200°C. Shut-in wellhead pressure is 5000kPa, and the wellhead flowing pressure is 1000kPa when the well is flowing 100 tons/hour. Determine the downhole pressure and temperature in each case ( for shut-in case and the flowing case). Assume: Casing diameter =0.2m a Casing roughness =0.0005m Please answer fast i give you upvote.
5. 10 lt / s of water is requested to be transported from A depot to city B. The water level of the A depot is 50 m and the B point is 30 m. The length of the EU pipe in the project has been calculated as 1000m and taken as f = 0.02. The pipe diameter has been chosen as φ90 mm. Since the minimum operating pressure (pressure head) required at point B is 20m, can water be delivered to point B with this system? (Velocity height is negligible)
The sketch for the warm water heating system of a studio apartment is shown in the figure. The volumetric flow rate of water through the piping system with a diameter of 0.0162 m is 0.000162 m3/s. the pipes used in the system are made of galvanized pipes (roughness value ε = 0.015mm). The minor loss coefficients for each fitting are for the elbow piece (KL=2,62), the heater corner valve(KL=5,62), the radiator(KL=3,62), the gate valve(KL=1,62) and the boiler (KL=4,62). Assuming that the density of water is1000 kg/m3, determine the power required to derive the circulation pump, which has an efficiency of 76,2 percent. Solve the problem by making the necessary assumptions and drawing the schematic figure. (a=6 and b=2 on the figure)
As seen in the figure, the vacuum pump provides air flow in an insulated pipe with a cross section of 46,2 mm2. The air moves along a straight line in a room with a pressure of 100,62 kPa and a temperature of 26,2 oC. If the pressure in section 1 is 98,62 kPa and the temperature in section 2 is 16,2 oC; This is Fanno flow. i) Calculate mass flow rate, ii) Calculate at section 1, flow velocity U1, density, Mach number Ma1, Re, f values iii) Calculate at section 2, find the stopping pressure and temperature, Mach number Ma2, U2 velocity, density, mass flow rate iv) Calculate friction coefficient and force on the channel walls between section 1 and 2. Solve the problem by making the necessary assumptions. v) Calculate L1-2 pipe length Cf=0.079Re-0.25 and f=4Cf expressions can also be used. Solve the problem by making the necessary assumptions and drawing the schematic figure. (a=6 and b=2 on the figure)
How much air is used per kg of coal burnt in a boiler having a chimney of 31.1 m height to create a draught of 19 mm of the water column when the temperature of the flue gases in the chimney is 361 o C and the temperature of the boiler house is 28.4 o C. Also find the equivalent gas head of the chimney.
A pump delivers 500 GPM water with a suction line 6 in. diameter. The reservoir is pressurized with to 17 psia. The required NPSHR is 15 ft. Due to the use of a filter and several bends on the suction line, the total loss coefficient adds up to K = 35. a) Find the maximum distance between pump centerline and water surface in the tank. Water is at 80 F for which, ρ = 62.5 lbm/ft3 and µ = 2.1 lbm/ft·h. b) Find the NPSHA if the pump is located 5 ft below the source reservoir water level. [Ans.: a) 5 ft and b) 25 ft].
find the following problem by showing the steps A . net head B. water horse power ( power) c. brak horse power ( bhp ) d. pump efficiency