) In cooling tower below, derive the given equations based on the system boundary below (neglect fan/pump work). Water Sprayed ma Air In Make-up water mM M Air Out 2 ma ↑aintain Air Blows Upward mm = ma (W2 - W1) B A Warm Water Gondenser Pump mw mw leelle Cold Water ma ( W2 - W1 ) hm + mw (hB-hA) = ma (h2-h1)
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- Need help with engineering problem. Match the RTT term with its explanation: A: ddt(∫CVβρdᏉ) B: ∫CSβρVcosθdAout C: ∫CSβρVcosθdAin A. B. C. Match one of the following answers below to each letter. A change within the control volume Outflow of B from the ontrol volume Inflow of B to the control volume6) In cooling tower below, derive the given equations based on the system boundary below (neglect fan/pump work). Air Out 2 Water Sprayed Air In ma 1 Make-up water mM M ma ↑aintaint Air Blows Upward mm = ma (W2 - W1) B A Warm Water Gondenser Pump mw mw 00000 Cold Water ma ( W2- W1 ) hm + mw (hB-hA) =ma (h2-h1)1. The wind turbine gives the following data: Blade length, I-52 m, Wind speed, v= 12 m/s, Air density, p=1.23 kg/m, Power Coefficient, C,- 0.4, Calculate
- Air pressure pand temperature Tat the inlet of reciprocating compressor are 1 bar and 15 °C. The outlet pressure is 8 bar.The power of the compressor Pis 551.6 W and the volume flow rate of inlet air qy is 122 litres/minute. The rotational speed of the compressor Nis 2850 rpm and the volumetric efficiency ny is 74.0%. Each question is worth of Calculate: a) Suction volume Vsuction b) Displacement volume Vstroke c) Isothermal power Pr cm³ (with one decimal accuracy) d) Isothermal efficiency T cm3 (with one decimal accuracy) W (with zero decimal accuracy) Your last answer was interpreted as follows: % (with zero decimal accuracy) Your last answer was interpreted as follows. Calculate the time t it takes to produce 20 litres of compressed airA liquid reactant solution is pumped through a pre-heater before entering a reaction vessel. The solution enters the pre-heater at 25 °C and must enter the reactor at 45 °C. The flow of the reactant solution is 1500 mL per minute. The density of the reactant solution is 0.91 g-cm3 and the heat capacity is 1.75 Jg1.K1. ASsume there is no heat loss in the pre-heater or between the pre-heater and the reactor. a. Draw a schematic of the pre-heater, detailing all mass and energy flows. b. Clearly define a system boundary. c. Write the general energy balance, and a simplified energy balance stating all assumptions that apply to this problem. d. What is the minimum power rating required for the pre-heater?Specific Heat, Cp Water Thermal Thermal Content, Temperature, T Density, p Conductivity, k Ibm/ft3 Diffusivity, a ft2/s Food %(mass) °F Btu/h-ft.°F Btu/lbm-R Fruits/Vegetables Apple juice Apples Apples, dried Apricots, dried Bananas, fresh 1.51 x 10-6 1.47 x 10-6 87 68 62.4 0.323 0.922 85 32-86 52.4 0.242 0.910 41.6 73 53.4 0.127 1.03 x 10-6 0.650 1.22 x 10-6 1.51 × 10-6 43.6 73 82.4 0.217 0.662 76 41 61.2 0.278 0.856 Broccoli 21 35.0 0.223 | 1.42 x 10-6 Cherries, fresh Figs Grape juice 92 32-86 65.5 0.315 0.952 40.4 73 77.5 0.179 1.03 x 10-6 0.642 1.51 × 10-6 1.51 × 10-6 89 68 62.4 0.328 0.934 Peaches 36-90 2-32 59.9 0.304 0.934 Plums 3 38.1 0.143 | Potatoes 32-158 0-70 65.7 0.288 1.40 x 10-6 0.868 Raisins 32 73 86.2 0.217 1.18 x 10-6 0.592 Meats Beef, ground Beef, lean 67 43 59.3 0.235 1.40 x 10-6 0.802 74 37 68.0 0.272 1.40 x 10-6 0.844 Beef fat 95 50.5 0.110 72 95 73 Beef liver 0.259 0.832 1.18 x 10-6 1.40 x 10-6 Cat food 39.7 71.2 0.188 0.638 Chicken breast 75 32 65.5 0.275 0.850
- Wind power is defined as the use of air flow through wind turbines to provide the mechanical force to generate electricity. Wind power is an alternative to burning fossil fuels, and is renewable and produces no greenhouse gas emissions during operation. Modern horizontal-axis wind turbines often use three blades. Theoretically, the maximum power P (unit: watts) that a three-blade wind turbine can extract from the wind power can be calculated as: P = pAv³C₁. . (Equation 1) where p is the air density (kg/m³), A is the sweep area of the turbine (m²) and can be calculated from the length of the turbine blades, and v is the wind speed (m/s). Cp is the power coefficient that is unique to each turbine type. This coefficient represents the amount of kinetic energy from the wind that is captured by the turbine. From the Betz's limit law we know that the best power conversion possible is Cp,max = 0.59. Part 1 Given the following data: Blade length /= 50 m Air density p= 1.5 kg/m³ Power…PROBLEM #5 gaa is being air film at & total 'pressure of 1:l bar- The paitial att 'one boundang at the other, The partial pressure remains com tant a transfered across a staghant pressure of the gas is' 0.45 bar of the film and 0. 12 bar a Find: an) effect m diffusiom coefficient if mass transfer rate'doubles bi) total pressure mass transter rate heeded to dowble the of the gasYou are replacing an HVAC system in your building. The system is a hot water system that consists of a boiler that feeds several air-handling units. The total heating load for the building is 2649 thousand Btuh. The max pressure required to pump through the furthest air-handling unit is 69 ft in total head. The inlet temperature at the air-handler is 196 F and the inlet-outlet temperature difference is 30 F. What is the required total flow rate (gpm)?
- Two Pumfs determine pump arun 3)both are running connected in series in syste the operation fointif サuy 2) only fumpErun Pump Akfmi= 50 49-5 48-3 46.5 44 4239-5 36.532-5 25 75 too 125 150 175 225 Pump Ahimt 4 39-5 39 38 3733634 32 3658 255 25 75 100 125 150175 200 225 250 SYStem ! 37 40 43-5 49-5 50-5 545 59-5 6680 130175z00 a tam?/hrto 25 50 구5 t00 +25 deluxeThe beating of the human heart can be modeled by a thermodynamic cycle. In this chapter, we have used PV diagrams to show processes occurring for a gas. Such diagrams can also be used for a liquid, such as blood in the heart. The figure below shows an idealized cycle for the left ventricle (LV) during a single beat of the heart. P(mm Hg) 120 78.0 20.0 10.0 A V (mL) 44.0 149 The cycle begins at point A with the opening of the mitral valve, which fills the LV with blood from the left atrium. During this process, the pressure and volume of the blood in the ventricle increase linearly until the mitral valve closes at point B. At that point, the muscles surrounding the LV contract, increasing the pressure of the blood. Because both the mitral and the aortic valves are closed, and because blood is essentially incompressible, the process is isovolumetric. The pressure increases to the diastolic pressure of 78.0 mm Hg (1 mm Hg = 133.322 Pa) at point C. Now, the aortic valve opens, pumping the…Experiment Data Take the following data for the syringe injection pump 2/ Inner diameter of syringe barrel: D = 1.5 cm Inner diameter of the needle shaft of the syringe: d = 0.5 mm The thread pitch of lead screw: pt = 0.75 mm Lead screw rotation velocity (rpm): n Calculations a Liquid injection rate (cm³/hr) Q = pt*n* 60 * π * D²/4 Velocity of liquid in syringe barrel (cm/min) vb = 40/ (60** D²) Velocity of liquid in syringe needle (cm/min) v₁ = 40/ (60*n* d²) b Find the rotation velocity of lead screw n and the velocity of liquid in syringe needle if the required injection dose is 1. 10 cm³ in 3 hours (continuous injection) 2. 20 cm³ in 12 hours (discontinuous injection, 5 cm³ each 3 hour, injection time = 1 min). Discus the recl Solution Calculate the liquid injection rate Q = P₁ xnx60xD² = 0.075xnx60××1.5² = 7.94n- cm³ hr Calculate the velocity of liquid in barrel V₁ == 40 60xπx D² 4x7.94n 60xx1.5² = 0.07ncm hr Calculate the velocity of liquid in needle 40 60xxxd2 4x7.94n 60xπx…