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systems analysis design
Questions and Answers of
Systems Analysis Design
Water from a river is to be pumped to an irrigation ditch as shown in Figure P4.43. The water temperature is 55°F. The irrigation requirement is 400 gpm. The elevation difference between the river
A closed-loop pump/pipe system has a head requirement of 35 m at a flow rate of 60 m3/h. The pump is a Bell & Gossett Series e-1531 Model 2AD operating at 3550 rpm with a 6-inch impeller.a. Develop
A two-tank pump/pipe system has a head requirement of 23.4 ft at a flow rate of 100 gpm. The elevation difference between the fluid surfaces in the tanks is 10 ft.The pump is a Bell & Gossett Series
Two Bell & Gossett Series e-80 3x3x7C pumps with 6.5-inch impellers are connected together in parallel. Both pumps are operating at 3550 rpm. This parallel pump combination is connected to a pipe
Two pumps are used in series to move a fluid to an elevated storage tank as shown in Figure P4.47. The first pump is a Bell & Gossett Series e-1531 low head, high capacity pump (Model 4AD with a
Two Bell & Gossett Series e-1531 Model 6BD pumps are connected in parallel.One pump has a 9-inch impeller and the other pump has a 9.5-inch impeller.When both pumps are running in a system, the fluid
Two Bell & Gossett Series e-80 2x2x7B pumps operating at 1750 rpm with 6.5- inch impellers are connected in parallel. A third pump, a Bell & Gossett Series e-80 2x2x7B pump operating at 3500
Water is being pumped through a pipe system at a temperature of 60°C.Determine the maximum absolute pressure at the eye of the pump’s impeller that would cause cavitation.
The pressure at the eye of the impeller of a pump moving water at 120°F is 2 psia.Will cavitation occur in this pump?
A pressure gauge attached to the suction port of a centrifugal pump indicates a pressure of −8 psig. The pump is being used to transport water at 70°F.Atmospheric pressure is 14.696 psia. Will
The pressure at the suction port of a pump transporting water at 30°C is 4.3 kPa (absolute). Will cavitation occur in this pump?
A Bell & Gossett Series e-80 5x5x7B centrifugal pump operating at 1770 rpm is fitted with a 6.5-inch impeller. The pump is being used to deliver water from a large tank as shown in Figure P4.54.
A Bell & Gossett Series e-80 6x6x7B pump operating at 1750 rpm with a 6.75-inch impeller is being used to transport water from a large tank as shown in Figure P4.55. The water is at a temperature of
Water is being transferred from a large tank on the ground floor to the second floor of an industrial processing facility as shown in Figure P4.56. A Bell & Gossett Series e-1531 Model 3BD pump
A centrifugal pump is tested in the laboratory. The pump has a 6-inch impeller and is operating at 3550 rpm. With water as the fluid, test results indicate that the pump delivers 280 gpm at 110 ft of
A centrifugal pump is being tested with water at 60°F. The pump is operating at 1150 rpm and has a 7-inch impeller. Performance test results indicate that the pump delivers 80 gpm at a head of 32 ft
A point on the performance curve of a pump indicates that at an operational speed of 1150 rpm, a pump with a 6.5-inch impeller is capable of delivering 100 m3/h at 3.75 m of head. Use the affinity
A centrifugal pump is capable of delivering 50 L/s of fluid at a head of 18 m while operating at 3550 rpm with a 7-inch impeller. At this condition, the pump power draw is 12 kW and the pump
Table P4.61 shows performance data read from one of the Bell & Gossett pump curves in Appendix E.a. For each data point in Table P4.61, use the affinity laws to determine the new capacity and
A Bell & Gossett Series e-80 4x4x13.5 pump has a 12.5-inch impeller and is operating at 1750 rpm. The pump is installed in a closed-loop pipe system. An analysis of the pump/pipe system at 400 gpm
The plates in a plate and frame heat exchanger are made of Inconel 600 (k = 16 W/m-K) and are 1.5 mm thick. Consider one of the plates in this heat exchanger. The convective heat transfer
The plates in a plate and frame heat exchanger are made of Monel 200 (k = 38.1 Btu/hr-ft-°F) and are 0.04-in thick. Consider one of the plates in this heat exchanger. The convective heat transfer
A 2½-nom sch 40S stainless steel pipe (k = 16.5 W/m-K) is being used in a heat exchanger application. The pipe is 1-m long. The convective heat transfer coefficients on the inside and outside of the
The convective heat transfer coefficients on the inside and outside of a ½-std type L copper tube are 150 Btu/hr-ft2-°F and 450 Btu/hr-ft2-°F, respectively. The tube is 4-ft long. An ethylene
Liquid propane is flowing through a 6-nom galvanized iron pipe at a flow rate of 3 kg/s. The average temperature of the propane in the pipe is 0°C.a. Determine the convective heat transfer
Due to extreme pressures for a particular application, a 10-ft long pipe is made of 2-nom sch 160 pipe (kpipe = 70 Btu/hr-ft-°F). The convective heat transfer coefficients inside and outside of the
Jojoba oil is flowing through a ¾-nom stainless steel pipe at a flow rate of 1,850 lbm/h.After the velocity profile in the pipe is fully developed, the oil enters a heater, as shown in Figure P5.7.
A 15% magnesium chloride solution is flowing through a 5-nom sch 40 commercial steel pipe at a rate of 325,000 lbm/h. The average temperature of the magnesium chloride solution as it flows through
Water is flowing inside of a 3-std type K copper tube at a flow rate of 1.2 kg/s. The average temperature of the water is 50°C. Cold, dry air at a temperature of 5°C and atmospheric pressure flows
An innovative engineering student has been contemplating whether or not it would be feasible to capture some of the waste heat that leaves the stack of a wood burning stove to preheat water. The
A building in a processing facility has been retrofitted for a new process. There is a need for hot water in this new process. The original design of the building did not include a hot water line.
A heat exchanger is being used to cool 48,000 lbm/hr of oil from 150°F to 102°F by using 32,000 lbm/hr of water at an inlet temperature of 70°F. The overall heat transfer coefficient is determined
A counter flow double pipe heat exchanger is being used to cool hot oil from 320°F to 285°F using cold water. The water, which flows through the inner tube, enters the heat exchanger at 70°F and
A flow of cold water enters a parallel flow heat exchanger at 20°C and leaves at 100°C. The cold water is being heated by a hot water flow that enters the heat exchanger at 160°C and leaves at
A counter flow heat exchanger is being used to cool a flow of hot water using a cold 20% ethylene glycol solution. The hot water enters at 80°F with a volumetric flow rate of 500 gpm. The ethylene
Solve Problem 5.15 for a parallel flow heat exchanger.Problem 5.15A counter flow heat exchanger is being used to cool a flow of hot water using a cold 20% ethylene glycol solution. The hot water
Solve Problem 5.15 for a shell and tube heat exchanger with one shell pass and two tube passes.Problem 5.15A counter flow heat exchanger is being used to cool a flow of hot water using a cold 20%
Solve Problem 5.15 for a cross flow heat exchanger where the water flow is mixed and the ethylene glycol solution flow is unmixed.Problem 5.15A counter flow heat exchanger is being used to cool a
Solve Problem 5.15 for a cross flow heat exchanger where the ethylene glycol solution flow is mixed and the water flow is unmixed.Problem 5.15A counter flow heat exchanger is being used to cool a
A counter flow heat exchanger is utilizing a cold 20% magnesium chloride solution to cool a flow of hexane. The hexane enters the heat exchanger at 26°C and the magnesium chloride solution enters at
Solve Problem 5.20 for a parallel flow heat exchanger.Problem 5.20A counter flow heat exchanger is utilizing a cold 20% magnesium chloride solution to cool a flow of hexane. The hexane enters the
Solve Problem 5.20 for a shell and tube heat exchanger with 1 shell pass and 2 tube passes.Problem 5.20A counter flow heat exchanger is utilizing a cold 20% magnesium chloride solution to cool a flow
Solve Problem 5.20 for a cross flow heat exchanger where the hexane flow is mixed and the magnesium chloride solution flow is unmixed.Problem 5.20A counter flow heat exchanger is utilizing a cold 20%
Solve Problem 5.20 for a cross flow heat exchanger where the magnesium chloride solution flow is mixed and the hexane flow is unmixed.Problem 5.20A counter flow heat exchanger is utilizing a cold 20%
Liquid heptane enters a counter flow heat exchanger at 45°F. The heptane is heated using a flow of hot water entering the heat exchanger at 150°F. The volumetric flow rates of the heptane and water
Solve Problem 5.25 for a parallel flow heat exchanger.Problem 5.25Liquid heptane enters a counter flow heat exchanger at 45°F. The heptane is heated using a flow of hot water entering the heat
Solve Problem 5.25 for a shell and tube heat exchanger with 1 shell pass and 2 tube passes.Problem 5.25Liquid heptane enters a counter flow heat exchanger at 45°F. The heptane is heated using a flow
Solve Problem 5.25 for a cross flow heat exchanger where both fluids are unmixed.Problem 5.25Liquid heptane enters a counter flow heat exchanger at 45°F. The heptane is heated using a flow of hot
A counter flow heat exchanger is being used to heat a flow of liquid toluene. The toluene enters the heat exchanger at 5°C with a volumetric flow rate of 10 L/s. Hot water is being used to heat the
Solve Problem 5.29 for a parallel flow heat exchanger.Problem 5.29A counter flow heat exchanger is being used to heat a flow of liquid toluene. The toluene enters the heat exchanger at 5°C with a
Solve Problem 5.29 for a shell and tube heat exchanger with 1 shell pass and 4 tube passes.Problem 5.29A counter flow heat exchanger is being used to heat a flow of liquid toluene. The toluene enters
Solve Problem 5.29 for a cross flow heat exchanger where the water flow is mixed and the toluene flow is unmixed.Problem 5.29A counter flow heat exchanger is being used to heat a flow of liquid
The series of heat exchangers shown in Figure P5.33 is designed to raise a liquid’s temperature so a desired chemical reaction can take place in the reactor. The specific heat of the liquid can be
A gas turbine cycle utilizes a regenerative heat exchanger as shown in Figure P5.34.Air enters the compressor at atmospheric conditions, 1 atm and 70°F with a mass flow rate of 15,000 lbm/hr. The
A shell and tube heat exchanger is being used as a steam condenser. Cold water flows in the tubes at a rate of 0.8 kg/s. The water enters the heat exchanger at 15°C and leaves at 63°C. The steam
The evaporator of a vapor compression refrigeration cycle utilizing R-123 as the refrigerant is being used to chill water. The evaporator is a shell and tube heat exchanger with the water flowing
The outer pipe in a double pipe heat exchanger is 4-nom sch 40 commercial steel.The inner tube is 2-std type K copper. The fluid inside the inner tube is flowing at a volumetric rate of 20 gpm and
A double pipe heat exchanger is made of a 6-nom sch 80 outer pipe and a 4-std type K copper inner tube. The fluid in the annular space is liquid water that has a volumetric flow rate of 20 L/s and an
A double pipe heat exchanger is made of an 8-nom sch 20 commercial steel outer pipe and a 4-std type M copper inner tube. The fluid in the annular space is liquid water that has a volumetric flow
A counter flow double pipe heat exchanger has an outer pipe of 4-nom sch 40 commercial steel and an inner tube of 2-std type M copper. Hard water at an average temperature of 120°F flows in the tube
Determine the UA product for the double pipe heat exchanger described in Problem 5.40 for both clean and fouled conditions.Problem 5.40A counter flow double pipe heat exchanger has an outer pipe of
A double pipe heat exchanger is constructed with a 5-nom sch 40 commercial steel outer pipe and a 2½-std type M copper inner tube. The heat exchanger is 2-m long.Water flows in the tube at an
A double pipe heat exchanger is made of a 6-nom sch 40 commercial steel outer pipe and a 5-nom sch 40S stainless steel inner pipe. The fluid in the annular space is cyclohexane that has a volumetric
Design a double pipe heat exchanger to cool a flow of liquid benzene from 85°F to 60°F. The mass flow rate of the benzene is 12,500 lbm/h. City water at 50°F is available to provide the required
A flow of 6 kg/s of octane is to be cooled from 70°C to 64°C. A flow of distilled water at 4 kg/s is available at 60°C to accomplish the cooling. Design a double pipe heat exchanger to meet this
Design and analyze a double pipe heat exchanger with requirements specified by your instructor. Report your results in a table similar to Table 5.8. Justify your selections by providing all
A counter flow double pipe heat exchanger has hot distilled water at 80°C enteringthe annulus at a flow rate of 1 kg/s. Cold distilled water at 50°C enters the innertube at a flow rate of 0.9 kg/s.
A parallel flow double pipe heat exchanger is constructed using a ¾-nom sch 5S stainless steel outer pipe and a ½-std type M copper tube. Ethanol enters the tube at 900 lbm/h and a temperature of
A shell and tube heat exchanger has two tube passes inside of a 29-in shell.The tubes are 1-in 16 BWG tubes on a 1¼-in square pitch and the heat exchanger contains the maximum amount of tubes
A shell and tube heat exchanger is has 1 shell with 2 tube passes. A 30% methanol solution is flowing through the shell at a rate of 90 kg/s. The shell has a diameter of 12 in. The tubes are ¾-in on
A shell and tube heat exchanger is made of a single shell with four tube passes.The hot fluid enters the heat exchanger at 96°F and leaves at 82°F. The cold fluid enters at 49°F and leaves at
The condenser of a steam power plant is a shell and tube design with cooling water flowing through the tubes. The condenser has 4 tube passes inside of a 39-inch shell. The tubes are 1½-in 12 BWG
The tubes in a shell and tube heat exchanger are 10 ft long. The liquid in the tubes is ammonia at an average temperature of 110°F. The flow rate of the ammonia entering the heat exchanger is
The evaporator of a refrigeration cycle is being used to chill water. The water flows in the tubes while the refrigerant boils in the shell. The water enters the heat exchanger at a flow rate of 50
A shell and tube heat exchanger has a single shell and 4 tube passes. The shell diameter is 25-in. The shell contains 10 baffles with a spacing of 0.36 m. Liquid ammonia flows through the shell with
Water is flowing at a rate of 240,000 lbm/hr through the shell-side of a shell and tube heat exchanger. The average temperature of the water is 40°F. The shell has a diameter of 17¼-in and there is
Liquid pentane is flowing in the shell of a shell and tube heat exchanger at a rate of 350,000 lbm/hr and an average temperature of 20°F. The shell has a diameter of 27 in and a length of 16 ft. The
A shell and tube heat exchanger is made up of a single 27-in shell and 2 tube passes. The tubes are 1½ 14 BWG with a 1 7/8-in in triangular pitch. City water passes through the shell of the heat
A shell and tube heat exchanger is being used to cool 150,000 lbm/h of benzene in a detergent manufacturing process. The benzene enters the heat exchanger at 125°F and its outlet temperature must
Liquid carbon dioxide enters the tubes of a shell and tube heat exchanger at a temperature of 0°C and a flow rate of 30 kg/s. The carbon dioxide is heated with a flow of city water that enters the
Table P5.61 shows manufacturer’s data for a particular plate and frame heat exchanger. Determine the,a. Average channel spacing (mm)b. Flow area for one channel between two plates (m2)c. Channel
Table P5.62 shows manufacturer’s data for a particular plate and frame heat exchanger. Determine thea. Average channel spacing (in)b. Flow area for one channel between two plates (in2)c. Channel
A 1-1/U counter flow plate and frame heat exchanger has 39 total plates. The plates are made from titanium and stamped with a 45° chevron pattern. Each plate has a length of Lp = 32 in and a width
In a distillery, a plate and frame heat exchanger with a 1-1/U counter flow plate arrangement is being used to cool down a flow of pure ethanol using cold water.The plates are stamped with a 50°
Cold distilled water is being used to cool a 30% ethylene glycol solution in a 1-1/U counter flow plate and frame heat exchanger. The ethylene glycol solution flows at 14.5 kg/s and enters the heat
A 1-1/U counter flow plate and frame heat exchanger is being used to warm a flow of cold acetone. The acetone enters the heat exchanger at 25°F with a flow rate of 315,000 lbm/h. Soft water at 50°F
Distilled water is being cooled by a 20% propylene glycol solution in a 1-1/U counter flow plate and frame heat exchanger. The water enters the heat exchanger at 50°F at a flow rate of 86,000 lbm/h.
A 1/1-U counter flow plate and frame heat exchanger is being used to cool liquid ammonia using a chilled 15% magnesium chloride solution. The ammonia enters the heat exchanger at 32°C with a flow
A plate and frame heat exchanger with a 1-1/U configuration has water (fouling factor = 0.00005 h-ft2-°F/Btu) for both hot and cold fluids. The heat exchanger has 125 plates.The horizontal port
Hot air is used to heat cold water from 35°C to 95°C in a finned-tube heat exchanger similar to the one shown in Figure 5.31. The water flows in the tubes at a flow rate of 1.9 kg/s. The air, at 1
A cross flow heat exchanger similar to the one shown in Figure 5.31 is being used to recover heat from a flow of hot air that enters the heat exchanger at 200°F with a mass flow rate of 14,400
Water enters a heat exchanger at 85°C with a flow rate of 2.5 kg/s. Dry atmospheric air enters the heat exchanger at 20°C at a flow rate of 12 kg/s. It is desired to select a cross flow heat
In Example 5.12, the UA product for a cross flow finned tube heat exchanger was calculated. In that example, it was stated that, “… the U value of the heat exchanger will change as the flow rates
To increase the thermal efficiency of a gas turbine cycle, the combustion air is often preheated using the hot gases exhausting the turbine. Consider the case where this is being accomplished using a
Develop an empirical equation that represents the pump head (ft) as a function of capacity (gpm) for a Bell & Gossett Series e-80 2 × 2 × 7B pump with a 6½-inch impeller operating at 1750 rpm. The
Develop an empirical equation that represents the pump efficiency (%) as a function of capacity (gpm) for a Bell & Gossett Series e-80 2 × 2 × 7B pump with a 6½-inch impeller operating at 1750
Develop an empirical equation that represents the net positive suction head required (m) as a function of capacity (m3/h) for a Bell & Gossett Series e-1531 2.5BB pump with a 9-inch impeller
Use the exact fitting technique to develop an empirical equation for the capacity (Btu/h) of the refrigeration compressor described by the 9-point performance data shown in Table 6.10. What is the
Use the exact fitting technique to develop an empirical equation for the power draw (W) of the refrigeration compressor described by the 9-point performance data shown in Table 6.10. What is the
Use the exact fitting technique to develop an empirical equation for the current draw (amps) of the refrigeration compressor described by the 9-point performance data shown in Table 6.10. What is the
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