FEED Flow Temp TDS Feed Water ? 5000 kg/hr 60 °C ppm LTE Reject Flow TDM Condensate ?kg/hr NCG Out 500 kg/hr 350000 ppm
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- Pin = 14:7 psia, Tine7oF 2. Air k Mclesx=1y fer aur Poub= lo0 psia, comp. Find the frual Temporature Advabatic processWerm Water flows through an adiabatic pumping system at a steady low rato (m) of 3 ke/u The conditions at the iniet are pi00 kPa, T=15 "C, and 0 m, and the conditions at the wxt are 500 kPa. T 18 "C, and ay= 200 um v Correct Waler Part 8 200 m Use the SL model to evaluate the punping power (W) Neglect any change in kinetic energy Express your answer in kilowatts to four significant figures. V AE ? vec Wat kW Submit ReduestAnswer - Part C What-if Scenario What would the pumping power be if the exit temperature were 19"C? Express your answer in kilowatts to four significant figures. AE 1 vec ?. Wout= kW Submit Beauest AnswerUse the steady flow energy equation to find the Change i entllaipy 10i tme all through the diffuser. (c) [Answers: 121kg/s, 15.3kJ/kg] A fire-man's pump steadily draws water from a river through a pipe with an inlet of diameter 12cm. A fireman positioned 3m above the pump inlet, holds a nozzle with an exit diameter of 3.5cm that is connected to the pump outlet by a flexible hose. The heat transfer to the surroundings from the pump is 10% of its output when it delivers a flow rate of 0.015m³/s. (a) 4. Draw a sketch of the pipe & pump and include an appropriate system boundary for a control volume analysis of the power requirements of the pump. Assuming steady state flow, calculate the power requirement for the pump to deliver 0.015m³/s in these conditions. Note that the density of water is 998kg/m³ and the gravitational acceleration is 10m/s2. (b) [Answer: 2.5kW] EAP/Revised 14th December 2020.
- Identify what is the system in this problem and write the general energy balance equation (no need to solve) A turbine is driven by a system that enters the turbine at the ff. conditions: 200 kg/h, 39 atm, 501 deg C, 49 m/s linear speed. The steam exits at a point 8 meters below the inlet stream of the turbine with the following conditions: atmospheric pressure, 290 m/s speed. 69000 W of shft work is delivered by the turbine while 100 kcal/h heat is lost. What is the specific delta H?Q1] A: A hydro 20000000 m³ with a head of 200 m. ( The area of reservoir is 3.0 km). The hydraulic efficiency of the plant is 0.8 and the elec. efficiency is 0.9. Calculate the power of the load that the plant can supply for one day, if the fall in the level of the reservoir during this period is 1 m. electric generating plant is supplied from a reservoir of capacity B: A motor drives a hoist which raises a load of 1000 kg with a velocity of 1 m/sec, calculate the input power of the motor assuming the hoist gearing efficiency to be 0.8, motor efficiency to be 0.75 .324000 kg/r. Determine Hu work aut- veloči tng of 16 m/one 42 3. Steam enters a turtoine with a and specifie enthal py (e990 kJ/kg).Thhe steam teaves turbine witn a velocisty of 37 m/s and specifie enthad py of 2530 K3/ng. The heat lust to the surroundings steam passes through the turbine. is (25k3/xg). The steam flow rate is -Put from the turbine in as the KWs.
- 42 velocity of 16 mfeone 3. Steam enters a turtoine with a and specifie enthalpy (e990 KT/ng).The steam Teaves t. turbine witn a 324000 kg/hr. Determine +He work aut - velocisty of 37 m/s and speific enthad py of 2530 KJ/ng- The heat lust to the surroundings as the steam passes through the turbine io (25 k3/vn). The' steam flow rate is -Put from the turbine in Kws.Pls. Answer this..? A steam engine has 10% brake thermal efficiency and consumes 750 kg/hr steam. The enthalpy of steam at the entrance ang exit of the engine and condenser are 2800 and 450 kj/kg repectively. Determine the brake power of the engine in kw.Q1: Find the pump efficiency if the pressure difference across the pump is 230 kPa. If the outlet 2₁ 14 cm Z2 diameter of the pump is 7 cm, the inlet diameter is twice the outlet diameter. take the mass flow = 50 rate of the pump is equal to 50 kg/s 72. 1 Wate C the pump nmotor = 85 % Motor 20 W
- How much air is used per kg of coal burnt in a boiler having a chimney of 31.1 m height to create a draught of 19 mm of the water column when the temperature of the flue gases in the chimney is 361 o C and the temperature of the boiler house is 28.4 o C. Also find the equivalent gas head of the chimney.In a reaction stage of a stcam turbine the nozzle angle is 20° and the absolute velocity the steam at inlet to the moving blades is 240 m/s. The blade velocity is 210 m/s. If 1.7 the blading is designed for 50% reaction, determine: (i) the blade angle at inlet and exit; il the cathalpy drop per unit mass of steam in the moving blades and in the complete stage; (i) the diagram power for a steam flow of 1 kg/s: (iv) the diagram efficiency. (79.3, 20°; 25.3 kJ/kg; 50.6 kJ/kg; 50.6 kW; 93.5%)The maximum velocity of an air flow (v= 700 ms-1 and T=160 oC