GF Deluxe RESALE REVENUE PER UNIT RECYCLING PROCESSING DISPOSAL COST PER UNIT REVENUE PER UNIT COST PER UNIT PART Metal drive $3.27 $4.78 $1.05 $0.85 Battery 0.00 3.68 6.18 3.05 Motor housing 3.93 2.95 2.05 1.25 Trimmer head 1.25 0.75 1.00 0.65 Premium Mate REVENUE REVENUE PER UNIT RESALE RECYCLING PROCESSING DISPOSAL COST PER UNIT COST PER UNIT PART PER UNIT Metal drive $3.18 $3.95 $1.15 $0.65 Battery 0.00 2.58 4.98 2.90 Motor housing 4.05 3.45 2.45 1.90 Trimmer head 1.05 0.85 1.10 0.75 RESALE REVENUE PER UNIT RECYCLING PROCESSING DISPOSAL COST PER UNIT REVENUE PER UNIT COST PER UNIT PART String feeder system $1.05 $1.25 $1.50 $1.40

GF Deluxe RESALE REVENUE PER UNIT RECYCLING PROCESSING DISPOSAL COST PER UNIT REVENUE PER UNIT COST PER UNIT PART Metal drive $3.27 $4.78 $1.05 $0.85 Battery 0.00 3.68 6.18 3.05 Motor housing 3.93 2.95 2.05 1.25 Trimmer head 1.25 0.75 1.00 0.65 Premium Mate REVENUE REVENUE PER UNIT RESALE RECYCLING PROCESSING DISPOSAL COST PER UNIT COST PER UNIT PART PER UNIT Metal drive $3.18 $3.95 $1.15 $0.65 Battery 0.00 2.58 4.98 2.90 Motor housing 4.05 3.45 2.45 1.90 Trimmer head 1.05 0.85 1.10 0.75 RESALE REVENUE PER UNIT RECYCLING PROCESSING DISPOSAL COST PER UNIT REVENUE PER UNIT COST PER UNIT PART String feeder system $1.05 $1.25 $1.50 $1.40

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.23P: Using the information in Problem 1.22, estimate the ambient air temperature that could cause...

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1. Residual oil, with a heating value of 18,480 BTU/bm, is used as a fuel in a power plant which produces 947,870 BTU/s of electricity. The overall efficiency of the power plant is 52 Determine the: a. Heat input, in BTUs b. Daily fuel consumption, in lbm C. Dimensions of the cylindrical storage (assuming length is equal to the diameter), in ft. d. Heat rejected the environment, in BTU/s. The density of the oil is 62 ID/ft.
Suppose we got the following data during a test of a 2- stroke engine in which gas is usedas a fuel:Diameter of the piston = 149 mmStroke length = 179 mmClearance volume = 0.88 literrpm of the engine = 302Indicated mean effective pressure = 6.0 barGas consumption = 6.0 m3/hCalorific value of the gas (fuel) = 16990 kJ/m3Make a clear sketch the geometry of this engine using the data and determine thefollowing:i. Indicated power developed by the engine in watt.ii. Air Standard Efficiencyiii. Indicated thermal efficiency of the engine.
1) An electric motor’s torque is a function of the speed at which it rotates. Many brushed AC motors have a linear toque curve as shown below. If the power output of the motor is equal to the torque (T) multiplied by the rotational speed in rad/s (w), what is the maximum power you can get out of the motor if the stall torque (Tstall) is 0.001 Nm and the no load speed (wno load) of 10,500 RPM? Give answer in Watts.
A work group of 5 workers in a certainmonth produced 500 units of output working 8hr/day for 22 days in the month. (a) Whatproductivity measures could be used for thissituation, and what are the values of theirrespective productivity ratios? hint (moth, day,and hours) (b) Suppose that in the next month,the same work group produced 600 units butthere were only 20 workdays in the month.Using the same productivity measures asbefore, determine the productivity index usingthe prior month as a base.
A hydraulic lift is required to lift a load of 98.1 kN through a height of 12 m, once in every 100 seconds. The speed of the lift is 600 mm/s. Determine : (a) power required to drive the lift, (b) working period of lift in seconds, and (c) idle period of the lift in seconds. [Ans. (a) 11.772 kW, (b) 20 sec, (c) 80 sec]
Q.5 A petrol engine with 6 cylinder of 82.55 mm bore and 79.5 mm stroke delevers 48 kW.If the compression ratio is 7.8 , mechanical efficiency is 80% and thermal efficiency is 21.1%, determine a)Total swept volume in cubic cm b) Clearance volume of each cylinder c)Indicaed power d)Friction power e)Indicated thermal efficiency
Plz solve this question completely (handwritten solution acceptable)
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I. Multiple Choice. Write the complete answer on the answer sheet (ex. 1. a. answer )1. The equation CP = CV + R applies to which of the following?a. Enthalpyb. Ideal gasc. Two phase statesd. All pure substance2. In the flow process, neglecting kinetic and potential energies, the integral of Vdprepresents what?a. Heat transferb. Flow energyc. Enthalpy changed. Shaft work3. Mechanical energy of pressure transformed into energy of heat.a. Kinetic energyb. Enthalpyc. Heat exchangerd. Heat of compression4. If the pressure of a gas is constant the volume is directly proportional to theabsolute temperature.a. Boyle’s lawb. Joule’s lawc. Charles’s lawd. Kelvin’s law5. Work energy can be a function of all the following except:a. Force and distance b. Power and timec. Force and timed. Temperature and entropy
An air-cooled condenser has an expected U value of 30 W/m2∙K based on the airside. The condenser is to transfer 60 kW with an airflow rate of 15 kg/s entering at 35°C. If the condensing temperature is to be 48°C, what is the required airside area in m2? Round your answer to 2 decimal places. heat transfer
Residual oil, with a heating value of 18,480 BTU/lbm, is used as a fuel in a power plant which produces 947,870 BTU/s of electricity. The overall efficiency of the power plant is 52%. Determine the: a. Heat input, in BTU/s b. Daily fuel consumption, in lbm c. Dimensions of the cylindrical storage (assuming length is equal to the diameter), in ft. d. Heat rejected to the environment, in BTU/s. The density of the oil is 62 lbm/ft3
ANS :1.Qa = 325,400.40 WSF = 02.a. wt' = 6300.00 kwb. x'2 = 94% c. wt = 6720.00 kwd. T2 = 24.1e. T1 = 465f. s2' = 34.10 g. T2' = 24.1 h. Ne' = 93.75i. delta s =1.55 kj/sec K