Learning Goal:To calculate minor head losses and pressure dropsfor pipe fittings.Minor losses in pipe flow are the result ofdisruptions to the steady laminar or turblent flow ina pipe by entrances, bends, transitions, valves orother fittings. In general, calculating these lossesanalytically is too complex. However, all of theselosses can be modeled using terms of the formh = KL where Kr, is called the losscoefficient and is determined experimentally. Thiscoefficient relates the minor head loss to thevelocity head for the flow. For expansions andcontractions, the loss coefficient is calculated usingninethe velocity for the smaller diameter pipe.The table below gives some representative valuesfor various minor head losses. These arerepresentative only, and a more complete tablewould account for different kinds of fittings andconnections (like threaded or soldered).FittingWell-rounded entrance≥0.15Flush entranceRe-entrant pipeDischarge pipeSudden contraction (d₂ to d₂)Sudden expansion (d, to d₂)Gate valve-fully openGlobe valve-fully open90° elbow45° bendTee along pipe runTee along branchFigureK₂0.60.40.20.4 0.6$214²KL0.040.51.01.0(Figure 1)2(¹-4)²(10.19100.900.400.401.8< 1 of 1 >0.8 1.0▼A gate valve is being used as a shut-off valve in a pipe system. When the valve is fully open, the flow through the 10-cm diameter pipe is 20 L/min. What is the head loss at the gate valve? One literis 0.001 cubic meters.Express your answer in m to three significant figures.▸ View Available Hint(s)ht. - 1.04SubmitPrevious Answers* Incorrect; Try Again; 4 attempts remainingPart B - Pressure dropΠΑΣΦ [11] vecAp=SubmitThe flow of water in a pipe passes through a sudden expansion from d₁ - 6 cm to d₂ -9 cm. If the flow rate is Q-0.02 m³/s, what is the pressure drop due to expansion? The specific weight of water is % -9.802 kN/m²Express your answer in kPa to three significant figures.▸ View Available Hint(s)Part C-Loss coefficientKL-19] ΑΣΦ", 41Submitvec ↑ @ⒸIEIvec ↑?AA company is measuring the loss coefficient for a new valve. The valve is placed in a section of pipe with diameter D - 10 cm. The flow rate is Q-0.03 m³/s. If the pressure drop is Ap-14.58 kPa, what is the loss coefficient for the valve? The specificweight of water is % -9.802 kN/m³.Express your answer to three significant figures.▸ View Available Hint(s)WE ΑΣΦ13 ?m?kPa

Answered: Image /qna-images/answer/855e86ad-df7b-46c7-9004-f43e6563c895.jpg

A gate valve is being used as a shut-off valve in a pipe system. When the valve is fully open, the flow through the 10-cm diameter pipe is 20 L./min. What is the head loss at the gate valve? One liter is 0.001 cubic meters. Express your answer in m to three significant figures. View Available Hint(s) hu=1.04 Submit Previous Answers ΥΠΙΑΣΦΗ [11] ve * Incorrect; Try Again; 4 attempts remaining Part B - Pressure drop Ap= Submit The flow of water in a pipe passes through a sudden expansion from d₁-6 cm to d₂ -9 cm. If the flow rate is Q-0.02 m³/s, what is the pressure drop due to expansion? The specific weight of water is % -9.802 kN/m² Express your answer in kPa to three significant figures. View Available Hint(s) VA24 vec Part C-Loss coefficient KL- ? m ΜΕ ΑΣΦΩΠ vec A company is measuring the loss coefficient for a new valve. The valve is placed in a section of pipe with diameter D-10 cm. The flow rate is Q-0.03 m³/s. If the pressure drop is Ap-14.58 kPa, what is the loss coefficient for the valve? The specific weight of water is % -9.802 kN/m³. Express your answer to three significant figures. ▸ View Available Hint(s) kPa

A gate valve is being used as a shut-off valve in a pipe system. When the valve is fully open, the flow through the 10-cm diameter pipe is 20 L./min. What is the head loss at the gate valve? One liter is 0.001 cubic meters. Express your answer in m to three significant figures. View Available Hint(s) hu=1.04 Submit Previous Answers ΥΠΙΑΣΦΗ [11] ve * Incorrect; Try Again; 4 attempts remaining Part B - Pressure drop Ap= Submit The flow of water in a pipe passes through a sudden expansion from d₁-6 cm to d₂ -9 cm. If the flow rate is Q-0.02 m³/s, what is the pressure drop due to expansion? The specific weight of water is % -9.802 kN/m² Express your answer in kPa to three significant figures. View Available Hint(s) VA24 vec Part C-Loss coefficient KL- ? m ΜΕ ΑΣΦΩΠ vec A company is measuring the loss coefficient for a new valve. The valve is placed in a section of pipe with diameter D-10 cm. The flow rate is Q-0.03 m³/s. If the pressure drop is Ap-14.58 kPa, what is the loss coefficient for the valve? The specific weight of water is % -9.802 kN/m³. Express your answer to three significant figures. ▸ View Available Hint(s) kPa

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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