Calculate the heat transfer Coefficient for hydrogen flowing through a 84.480mm Bore with a velocity of 1.95 m/s. Average temp is 1200 °C ?
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- A Copper ball at 40'Cis dropped in a mug containing water at 40°C. The heat will Select one: O a.not flow from Copper ball to water or from water to Copper ball O b. flow from Copper ball to water O c. Increase the temiperature of both O d. flow from water to Copper ballA saturated steam at 410K is being transported in a pipeline (brass drawing tubing) at a rate of 1 grams/second. Pipe has inside diameter of 0.025 m . The tube is 100m long. The pressure at the entrance is 80kPa. (use Perry's Handbook for the properties and constants) R = 8314J/kgmol.K; MW=18.02g/mol What is the a.) value of G in kg/s.m2? b.)value of friction factor? 3 significant figures c.)the % of pressure drop? d.)the outlet pressure? e.) compressible or not?watu enters a tube (d=6omm) ta rate of oiol ka/s with temp. of 2öc . A constant het flux of 2000 wii was applied. What rs the tube length requined to obtain an exit temp. of 8c.what is the surface temp.at the outlet of the tube, where fully daveloped conditions maybe assumed to exist -
- heat trawafer coefficient Problem #21. Cz Moo Cethanal) i (flow pute - 12.4 mh) through a being 98.6°F heate d from m2/h) though a 2-4 Shell and tube heat exchong er whing hot water (flow pate= 8-29 m³ /h, 155.39 °F). inlet temperature- 221 F, outlet mperature= awerage heat capaci ty of CaHeO - li63 Btu J lb'F = 5.8 * 105 Watts = 363. 99 Btu|hft°F heat trans fer rate ethanol %3D overall heat trawafer %3D Jelve for: a. comeetion factor 6 (Ao) mean temperature differe nce outaide nur face are a veguiredsurface heater is (128 psia) chen [4] The pressune în a (230000I6/hr) o water enfers at (84-7F)- Drains in the amount of (57b00 Ib/hr) enter at (120f) · Caleulate the steam flow at cn TTD is (4F). enthalpy of (10g5.5 Bru) when theat o G". The tank is now heared I tank contains R-134 a unlil the Syrtem be at 50c and 400k pg- The Sr Survondings temperatune is 300 k G1z find o The heat tmansfer to Fhe Sxstem Tank Per uint mass cQ iz) in kg/ng7 R-1349 e Total enmnopy in kJ/kg-K ? generation C Si2) PL=460 kP Tu w=300 K
- The density of water is looe ty/m? and the e Plective bwlk modulus (klis 1.06 Gpa. in a 5omLony pipe Carries water at 1.86 nls. that calculate DP in Mpa. AP=pv pelton wheel the velocity of ) In the incident jet relative to the bucket the water jet velocity is is 6.28 m Is, 23.54 m/s and volumetric flov rate f the jet 109 m/s. Tn an ideal itnation (Cy, * and cos© are all eqnal to !) m/s. In an ideak 2it wat ion Hint V= V, -U = V, -wR DV = (V, -U) (1+k coso) mee W = 27N 60 raA /swatu enters a tube (d=6omm) ta rate of o.ol Kals with temp. of 2öc . A constant het flux of 2000 winh was applied. What rs the tube length requined to obtain an exit temp. of såc. what is the surface temp.t the outlet of the tube, where fully developed conditions maybe assumed to exist. -Define the Under steady-flow conditions?
- Prlen # 9. Solve for: a) heat tranefer pate of ayatem ) mass Mow rate bath Atreams. Ueing a double kipe Reat eschunger (imside di anaeten =0.38 m, %3D outside diaetu = 0.40 m total length= 0.14 m steam (0.12 mPa kas wndengme The steam conde na atiin method. wtili ged peservoir water flow, outlet ald fluid temp. = at 306.95 K using 321.85 K countereurrent Uaing ouerall neat tranefer outride Aurface area, Crefficint: Uo-5219.97 W/m² KBA4s6nknAPkVXhnUEg rmResponse Good Luck... PROBLEM 1 Determine the following: a. Enclosed Area b. Perimeter of the thin walled tube Given is a thin-walled tube with the following data: Wall thickness-2mm ABC is a sector with a radius of 50 mm AOD & COD is a triangle C. Shear flow d. Shear stress e. Angle of twist Torque is 1000 N.m Length of the thin walled tube is 0.5 m Use G=24 GPa for aluminium A 90 B D 3R PROBLEM 2 Determine the following: a. Enclosed Area b. Perimeter of the thin walled tube c. Shear flow d. Shear stress Given is a thin-walled tube with the following data: Wall thickness- 3mm Torque is 900 N.m Length of the thin walled tube is 1.2 m. Use G=24 GPa for aluminium e. Angle of twist Ps Xd étv WPROMLEM # 22.a. Find the heat coupau tg of hot and cold fland. mass at a pressure = 2at m and flow rate = Il020 kg /min. the temp erature of hot water is being decreased from 248.09°F to 212.09 oF u = 1020 kg /min, sing a heat exchanger. Reservvir water u used as w coolant with mass flow rate = 1800 ka Imin and inlet temperature The ft? 50.09 of. ニ 2. minimum allow able of heat ex changer surface are a = 270.17 all ow able overall heat = 204.05 btu/ The transfer coefficient of heat exchanger The heat capaci ty the average vame of maxi mum %3D do z7f Y inlet and out let temperatures. y to be ustd must be