The methyl alcohol flowing in the inner pipe of a double pipe exchanger is cooled with...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
The methyl alcohol flowing in the inner pipe of a double pipe exchanger is cooled with water flowing in the jacket. The inner pipe is made from 1-inch (25mm) schedule 40 steel pipe. The thermal conductivity of steel is 26 Btu/ft-h-°F (45 W/m-°C ). The methyl alcohol enters the inner pipe at 104°F and exits at 64°F. The cooling water in the jacket of the double-pipe exchanger has a bulk temperature Tof = 41°F. The diameters and wall thickness of 1-in. Schedule 40 pipe, from Appendix 5, are 1.049 D, 0.133 1.315 0.1096 ft 12 0.0874 ft D. 0.0111 ft 12 12 TABLE 11.1 Data for Example 11.1 Coefficient WhmC 1020 1700 Alcohol coefficient A Water coefficient A, Iniside fouling factor he Outside fouling factor 180 300 1000 00 S680 2840 From all the given data, determine the following: 1. q, constant rate of heat transfer 2. T1, temperature of the inner tube surface in contact with methyl alcohol 3. AT, temperature difference due to heat conduction in the inner tube. NOTE: Uo = 71.3 Btu/ft-h-F or 405 W/m²-C but Ao I can't find %3! USE THIS = Uo(Tp - Tof) Ao NOTE: U, is based on outer surface area of the inner pipe T - Tof = (Tp - 7;) + (F – Fz) + (T- Tof) () + (ALM) hofAo Uo KALM Dox hofdu Do ER = + KDLM hor where x = r -n - pipe thickness Do-D In(Do/D) DLM = The methyl alcohol flowing in the inner pipe of a double pipe exchanger is cooled with water flowing in the jacket. The inner pipe is made from 1-inch (25mm) schedule 40 steel pipe. The thermal conductivity of steel is 26 Btu/ft-h-°F (45 W/m-°C ). The methyl alcohol enters the inner pipe at 104°F and exits at 64°F. The cooling water in the jacket of the double-pipe exchanger has a bulk temperature Tof = 41°F. The diameters and wall thickness of 1-in. Schedule 40 pipe, from Appendix 5, are 1.049 D, 0.133 1.315 0.1096 ft 12 0.0874 ft D. 0.0111 ft 12 12 TABLE 11.1 Data for Example 11.1 Coefficient WhmC 1020 1700 Alcohol coefficient A Water coefficient A, Iniside fouling factor he Outside fouling factor 180 300 1000 00 S680 2840 From all the given data, determine the following: 1. q, constant rate of heat transfer 2. T1, temperature of the inner tube surface in contact with methyl alcohol 3. AT, temperature difference due to heat conduction in the inner tube. NOTE: Uo = 71.3 Btu/ft-h-F or 405 W/m²-C but Ao I can't find %3! USE THIS = Uo(Tp - Tof) Ao NOTE: U, is based on outer surface area of the inner pipe T - Tof = (Tp - 7;) + (F – Fz) + (T- Tof) () + (ALM) hofAo Uo KALM Dox hofdu Do ER = + KDLM hor where x = r -n - pipe thickness Do-D In(Do/D) DLM =
Expert Answer:
Answer rating: 100% (QA)
Giveni From Chorts Di 008 74 f 2664mm 01096 ft 3341mm The... View the full answer
Related Book For
Posted Date:
Students also viewed these mechanical engineering questions
-
A double pipe exchanger is operated for heating and cooling the following fluids: i. acrylic acid heats from 12 o C to 44 o C using a parallel flow of naphthalene that cools from 93 o C to 52 o C....
-
A 2.0-in schedule 40 steel pipe (see Appendix A) has k = 27 Btu/h ft F. The fluid inside the pipe has h = 30 Btu/h ft2 F, and the outer surface of the pipe is covered with 0.5-in fiberglass...
-
The steel water pipe has an inner diameter of 12 in. and a wall thickness of 0.25 in. If the valve A is closed and the water pressure is 300 psi, determine the longitudinal and hoop stress developed...
-
Cost of goods available for sale consists of two elements: beginning inventory and: (a) ending inventory. (b) cost of goods purchased. (c) cost of goods sold. (d) All of the answer choices are...
-
Complete the following table. The underlying asset is ounces of gold. Assume noarbitrage. Cost 1-vear forwar price 1-year interest rate Annual storage cost Spotof carry 4% of spot 2% of spot 3% of...
-
The pressure difference between an oil pipe and water pipe is measured by a double-fluid manometer, as shown in Fig. P356. For the given fluid heights and specific gravities, calculate the pressure...
-
Air is delivered through a constant-diameter duct by a fan. The air is inviscid, so the fluid velocity profile is "flat" across each cross section. During the fan start-up, the following velocities...
-
Goodwin Enterprises had a gross profit of $2,500,000 for the year. Operating expenses and interest expense incurred in that same year were $595,000 and $362,000, respectively. Goodwin had 200,000...
-
A machine is 77% efficient and loses 1.1 horsepower through its drivetrain. Determine the horsepower input of the machine. Round the answer to 1 decimal place.
-
The proposed rates were not in the range the CEO expected given the pricing analysis. The CEO has asked the pricing actuary to verify the total projected loss cost excluding potential large storm...
-
Explain an instance where a tech company developed some form of technology that did not exist (or was not popular) that inspired other companies to develop similar competing technologies.
-
Which approach acts as a single unit composed of subcomponents, inputs, output, processing, and feedback? Quantitative approach Contingency approach Operational approach Systems approach
-
________ can be described as a few anticipated environments where the plans get executed. Forecasting Planning Planning premises None of the above
-
Which of the following is a disadvantage of the bureaucratic form of organization? Approved policies and procedures Democratic form of ruling Works best practices aptly followed Alignment to...
-
Frank and Lillian Gilbreth focused on time and motion study. True False
-
Planning is also susceptible to Political scenario Changes in science and technology Price fluctuations All of the above
-
emergency management assistance company is a state to state system for sharing resources during an emergency or disaster true or false
-
Distinguish among total-moisture content, free-moisture content, equilibrium-moisture content, unbound moisture, and bound moisture.
-
The beam is made of elastic perfectly plastic material. Determine the maximum elastic moment and the plastic moment that can be applied to the cross section. Take a = 50 mm and Ï Y = 230 MPa. 2a
-
Determine the shear strain γ xy at corners D and C if the plastic distorts as shown by the dashed lines. y 12 mm 4 mm 8 mm IB 3 mm 300 mm 12 mm |A -400 mm- 5 mm
-
Determine the resultant internal loadings on the cross section at point D. 1.25 kN/m 1.5 m '0.5 m' 0.5 m'0.5 m
-
Refer to Example 7, Chapter 10, where 48 of 60 transceivers passed inspection. (a) Obtain the maximum likelihood estimate of the probability that a transceiver will pass inspection. (b) Obtain the...
-
The daily number of accidental disconnects with a server follows a Poisson distribution. On five days \[\begin{array}{lllll}2 & 5 & 3 & 3 & 7\end{array}\] accidental disconnects are observed. (a)...
-
In one area along the interstate, the number of dropped wireless phone connections per call follows a Poisson distribution. From four calls, the number of dropped connections is...
Study smarter with the SolutionInn App