Can you explain the process of this refrigeration and cryogenic plant for liquid oxygen production?
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- ll MTN 1/1 9:04 PM 22% I Air at lol 325k Pq barometric pressure, dry bub temperature of 20°C and wet buib tem perature of 15°C at 84ate one, mixes adiubetically wth andher strei m of air at lo1.325 kpa buro metric pressure, dry bulb tempera tu re cf (1°C and rela tiue humidity of sol at glate fwo. If the masses of dry air are 2kg and 3 kg respectilely, determine with the aid of a Psy chrome tric chart! D he Dew point temperature of the air at state point one. O. The relatire humidity at stete point on e a. The Dew pomt temperature and the welt belb temperature at tute point two. U. The enthalpy of the tewo air streauns N. The moisture content of the fwo air streusme.What is the difference between specific internal energy and specific enthalpy in first law of Thermodyanamics and when should i use which? From what i understand so far for constant pressure process, we use q-w=h2-h1 and constant volume process, we use q-w = u2-u1. But this isnt the answer i am looking for.6 In a boiler test, the following observations wcre made: 358 A Text Book of Thermal Engineering Feed water temperaturç e= 12" C; Pressure of steam = 11 bar; Dryness fraction of steam 095 Mass of coal burnt 300 kg/h, Calorific value of coal 32 000 kJkg of coal; Mass of water supplied to boiler in 7 hrs 14 min= 14 625 kg. The mass of w ster in the boiler at the end of the test was less than that at the commencement by 900kg. Calculate I. Actual evaporation per kg of coal: 2 Equivalent evaporation from and at 100 C per kg [Ans. 7 15 kg, 8 33 kg: 58.75 % of coal ; and 3. Thermal efficiency of the boiler
- Benzene at 20 0C is pumped from one storage tank to a reactor (density=878 kg/ m3 ). Volumetric flow rate of benzene is 9.5x 10-4 m3 /s. The difference in the elevations of the two unit is 40m. The tank whichserves as a source is open to the atmosphere while the tank which receives the benzene has a pressure of P2 kPa abs in the vapor space above the benzene. 1‐in, schedule‐40 steel pipe and 2‐in Sch‐40 steel pipe isused in suction and discharge line respectively. Total friction loss of the system given as 135 J/kg . Pressure gauges in the pipeline at the inlet and outlet of the pump read (P3) 34.5kPa and (P4) 1051.6kPa, respectively. Efficiency of pump is %75 a) Calculate the power of pump (kW). (Fluid Mechanics Question) (Please answer it detailed and step by step)l MTN 1/1 1:12 PM O 15% 0 Air at lol 325K Pa barometric pressure, dry beub temperature of 20°C and wet buib tem perature of 1S°C at 8tate one, mixxes adiubeti cally wth andther stream of air at lol.325 kpq buro metric pressure, dry bulb temperature f lC and rela tive humidity of so% at glate fewo. If the masses of dry air are 2kg and 3 kg rerrecfively, determine with the aid of a Psy chrometric Chart! D. he Dew point temperature of the air at stat e Point one - O. The relative humidity at Aeste porint one w. The Dew pomt temperature and the welt blelb tempercature at stute Point two U. The enthalpy of the tewe air gtreams V. The moisteure content of the two air streusme. 6. Explain cooling and humidificetion prece ss in air conditioning.96 %24 ork 6 1. A patient needing a blood transfusion has a blood pressure of 120/70 (this is in units of mm Hg). It is best for the blood during the transfusion, to have a pressure that matches the patient's diastolic pressure (70 mm Hg). At what height, above the insertion point, should the blood supply be raised, such that it has the desired pressure of 70 mmHg is reached? (Density of blood is 1.06 * 10^3 kg/m^3 and 1 mm Hg= 133 Pascals) PZ =P0+PGZ 1.013 *105PA760MMHG G=9.8 P=1000 dy 12 f5 114 144 & 9 5. 4. 00
- Classify whether the properties given is for subcooled liquid (SC), saturated liquid (SL), wet mixture (WM), saturated vapor (SsV), superheated vapor (SP) or saturated (S) (can be liquid or vapor) kJ Tsat = 160°C, u = 1000- kg m3 Tsat = 200°C, v = 0.01234 kg Tsat = 200°C, P = 1.5549 MPa 1. Psat = 0.14 MPa,T = 0°C 2. Psat = 1.0 MPa, T = 100°C 7. Peat = 1.4 MPa,T = 150°C kJ Pzat = 0.14 MPa, h = 2000- kg k] Psat = 1.5 MPa, s = 7- kg – K 3. %3D 8. Tsat = 191°C, v = 0.00114291- m3 kg m3 Tsat = 193°C, v = 0.14685 kg 9. 5. 10. sc SL WM sv SP 1 2 3 4 7 8 9 10 6.Atmospheric air condition of certain locality is at 28 C wet bulb temperature and its moisture content is 18 grams/kilogram of dry air. It is cooled through a R-22 DX type cooling apparatus and leaves the apparatus at 2 OC lower than the air dewpoint temperature. For ideal process, flowing at 1,000 liters/min determine the following: plot the process on the psychrometric chart and label it properly air dry bulb temperature leaving the cooling apparatus how much moisture is dripping in kg/s refrigeration needed in tons19.1 10 SLE oz 19.1-22. Diffusion and Heterogeneous Reaction on a Surface. In a tube of radius R m filled with a liquid, dilute component A is diffusing in the nonflowing liquid phase repre- sented by 16 be A828 XUh She lE SE dc NA=-DAB 35 00 A АВ dz where z is distance along the tube axis. The inside wall of the tube exerts a catalytic effect and decomposes A so that the heterogeneous rate of decomposition on the wall in kg mol A/s is equal to kc Aw, where k is a first-order constant and Ay is the wall area in m2. Neglect any radial gradients (this means a uniform radial concentration). Derive the differential equation for unsteady state for diffusion and reaction for this system. [Hint: First make a mass balance for A for a Az length of tube as fol- lows: rate of input (diffusion) +rate of generation (heterogeneous) rate of outpur (diffusion)+ rate of accumulation.] sds a'сА 2k дс А A = D Ans. A R az3 АВ OTOt 19.2-1.
- 6-Prove that the enthalpy of the humid air remains constant along a wet bulb temperature line on the psychrometric chart2. Two hundred and fifty pounds of a mixture of 10 mol% propane 20% n-butane, and 70% n-pentane is completely vaporized in a pipe still in one hour. At the outlet, the temperature anc 433 F and 600 psia. What is the volumetric flow pressure are rate in cfm at the outlet conditions? Answer: The physical properties of the gas are: Tc Pc MW Propane 369.9 K 665.8 R 42.0 atm 44 Butane 425.17 K 765.31 R 37.47 atm 58 Pentane 469.8 K 845.64 R 33.3 atm 721. Complete the table below for refrigerant R-134. (Explain your numbers) P(kPa) T(°C) v(m²/kg) u(kJ/kg) Phase 360 -12 2 900 50 3 30 0.24233 4 240 0.045 5 250.04