A large quantity of a highly viscous monomer solution with a specific gravity of 0.944 and...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A large quantity of a highly viscous monomer solution with a specific gravity of 0.944 and viscosity of 0.251 N s m-2 is stored in a large tank held under atmospheric pressure. To prevent a known problem of stratification of the solution within the tank over long periods, the monomer is periodically recirculated using a small external pump through a smooth-walled pipeline that is 30 m in length and has an internal diameter of 75 mm. Determine the power requirement of the pump if the recirculation rate is 15 tons per hour and the pump has an overall efficiency of 65%. Allow for entrance and exit losses (1.5 velocity heads) in which the pipe has twelve 90-degree elbows and three open gate valves of 0.7 and 0.15 velocity heads each, respectively. It is proposed to pump 10,000 Kg/h of toluene at 114C and 1.1 atm abs pressure from the reboiler of a distillation tower to a second distillation unit without cooling the toluene before it enters the pump. If the friction loss in the line between the reboiler and pump is 7 kN/m2 and the density of toluene is 866 kg/m3, how far above the pump must the liquid level in the reboiler be maintained to give a net positive suction head of 2.5 m? Natural gas having a specific gravity relative to air of 0.6 and a viscosity of 0.011 CP is flowing through a 6 in. Schedule 40 pipe in which is installed a standard sharp-edged orifice equipped with flange taps. The gas is at 100F and 20 lbf/in2 abs at the upstream tap. The manometer reading is 46.3 in. of water at 60 F. The ratio of specific heats for natural gas is 1.30. The diameter of the orifice is 2.00 in. Calculate the rate of flow of gas through the line in cubic feet per minute based on pressure of 14.4 lbf/in2 and a temperature of 60F. Ammonia at 10C and 1 atm is compressed to 5 atm in a single-stage adiabatic compressor. The flow rate is 50 Kg/h. (a) Calculate the exit temperature and the power required for an ideal compressor. (b) If the compressor is 80 percent efficient, what are the power and the exit temperature? A large quantity of a highly viscous monomer solution with a specific gravity of 0.944 and viscosity of 0.251 N s m-2 is stored in a large tank held under atmospheric pressure. To prevent a known problem of stratification of the solution within the tank over long periods, the monomer is periodically recirculated using a small external pump through a smooth-walled pipeline that is 30 m in length and has an internal diameter of 75 mm. Determine the power requirement of the pump if the recirculation rate is 15 tons per hour and the pump has an overall efficiency of 65%. Allow for entrance and exit losses (1.5 velocity heads) in which the pipe has twelve 90-degree elbows and three open gate valves of 0.7 and 0.15 velocity heads each, respectively. It is proposed to pump 10,000 Kg/h of toluene at 114C and 1.1 atm abs pressure from the reboiler of a distillation tower to a second distillation unit without cooling the toluene before it enters the pump. If the friction loss in the line between the reboiler and pump is 7 kN/m2 and the density of toluene is 866 kg/m3, how far above the pump must the liquid level in the reboiler be maintained to give a net positive suction head of 2.5 m? Natural gas having a specific gravity relative to air of 0.6 and a viscosity of 0.011 CP is flowing through a 6 in. Schedule 40 pipe in which is installed a standard sharp-edged orifice equipped with flange taps. The gas is at 100F and 20 lbf/in2 abs at the upstream tap. The manometer reading is 46.3 in. of water at 60 F. The ratio of specific heats for natural gas is 1.30. The diameter of the orifice is 2.00 in. Calculate the rate of flow of gas through the line in cubic feet per minute based on pressure of 14.4 lbf/in2 and a temperature of 60F. Ammonia at 10C and 1 atm is compressed to 5 atm in a single-stage adiabatic compressor. The flow rate is 50 Kg/h. (a) Calculate the exit temperature and the power required for an ideal compressor. (b) If the compressor is 80 percent efficient, what are the power and the exit temperature?
Expert Answer:
Answer rating: 100% (QA)
1 Power Requirement of the Pump for Monomer Recirculation Given data Monomer recirculation rate 15 tons per hour Pipeline length 30 m Internal diameter of the pipeline 75 mm Overall efficiency of the ... View the full answer
Related Book For
Contemporary Financial Management
ISBN: 9780324289114
10th Edition
Authors: James R Mcguigan, R Charles Moyer, William J Kretlow
Posted Date:
Students also viewed these chemical engineering questions
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
In a small university, the Computer Science Department has six faculty members. However, each faculty member belongs to only the computer science department. This type of relationship is called a....
-
What is forward sensing in AGVS terminology?
-
An isolated conducting sphere of radius 1 0 cm , initially uncharged, is illuminated by ultraviolet light of wavelength 2 0 0 nm . What charge will the photoelectric effect induce on the sphere? The...
-
What happens to the probability that a particular person works when the wage rises? Does such a wage increase generate an income effect?
-
Magic Oaks Realty's net revenue and net income for the following five-year period, using 2010 as the base year, follow: Requirements 1. Compute trend analysis for net revenue and net income. Round to...
-
Write a C program that uses the random number generator rand( ) to create an array with 20 numbers in the range from 1 to 50 and disply them in a row. The program sorts the array elements and...
-
Write Benefits of domestication in marketing.
-
The risk-free interest rate is 3% annualized and continuously compounded. Assume the market is frictionless. When you plot the forward curves below, you may choose to either (i) use the analytical...
-
The SickKids Foundation is the largest charitable funder of child health research, learning, and care in Canada. They have been successful in raising funds to support the Hospital for Sick Children...
-
Calculate the alpha and beta of Stock A 2) Please calculate the volatility of the portfolio (stock a and stock b) based on two scenarios (a. equal weight b. arbitrary weight: stock a 20% stock b 80%...
-
A soil sample is identified by the following sieve data: Sieve #10 #40 #200 LL PI Passing 100% 80% 37% 42 20 What is the AASHTO classification of this sample? Explain what type of subgrade material...
-
Country A (rich in labor) and country B (rich in capital) produce good X (labor-intensive) and good Y (capital-intensive). Before trading, the equilibrium points of the closed economy of the two...
-
Read post and respond. In response, include additional thoughts or reflections that further the discussion. I have never worked for such an amazing team as much until I joined Bank of America. We use...
-
Wal-Mart is the second largest retailer in the world. The data file on the disk holds monthly data on Wal-Marts revenue, along with several possibly related economic variables. a) Using computer...
-
With reference to Example 2, Chapter 2, test that the mean copper content is the same for both heats. Data From Example 2 Data From Figure 3.2 EXAMPLE 2 Relation of regions in Venn diagrams to events...
-
With reference to Example 8, find a \(90 \%\) confidence interval for the difference of mean strengths of the alloys (a) using the pooled procedure; (b) using the large samples procedure. Data From...
-
With reference to part (a) of Exercise 8.33, how would you pair and then randomize for a paired test? Data From Exercise 8.33 8.33 How would you randomize, for a two sample test, in each of the...
Study smarter with the SolutionInn App