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A company has an annual demand for a product of 1000 units, a carrying cost of $20 per unit per year, and a setup cost of $100. Through a program of setup reduction, the setup cost is reduced to $10. Run costs are $2 per unit. Calculate:
a. The EOQ before setup reduction.
b. The EOQ after setup reduction.
c. The total and unit cost before and after setup reduction.
two boxes made of the same material have the same masses but their dimensions are different. the bases of the boxes in
Consider the air chilling process of Problem 7.110a. Determine the outlet air temperature To and mass rate at which the PCM is melted for s = 0.30. Assume the total mass of PCM and the mass flow rate of air are unchanged. The length of the containmen..
In a Modified Rankine Cycle used in a power plant in Wichita, KS, a Shell and Heat Exchanger needs to be installed. Water from the turbine at 90 C is cooled to 80 C in a shell-tube HX using 150 kg/s of raw water from Power Plant Lake.
You want to know if you should replace the existing machines, which has a Cpk of 1.0. You decide to determine the Cpk for the new machines and make a decision on that basis.
problem 1a horizontal steel pipe having a diameter of 5 cm is maintained at a temperature of 50degc in a large room
The principal strains in a circular bulge test are the thickness strain, εt, the cir- cumferential (hoop) strain,εc, and the radial strain, εr. Describe how the ratio εc/εr varies over the surface of the bulge. Assume that the sheet is locked at the ..
Air enters a 3600-kW turbine operating at steady state with a mass flow rate of 18 kg/s at 800oC, 3 bar and a velocity of 100 m/s. The air expands adiabatically through the turbine and exits at a velocity of 150 m/s.
A single-stage ideal regenerative steam cycle has a boiler pressure and temperature of 5000 kPa and 500 C, and a condensing pressure of 10 kPa. The extraction pressure is 500 kPa.
a tire of a car having a volume of 0.6 m3 contains air at 280 kpa. determine the mass of air in kg contained in the
a pistoncylinder arrangement is filled with helium gas. the gas is compressed with a polytropic process with nk. the
The steady state operation for a simple steam power plant with a mass flow rate of 1 kg/s is shown in the figure. Determine 1) the thermal efficiency of the process and 2) mass flow rate of cooling water in kg/s (assume condenser is well insulated)
1- find the decay constant of cesium-137 half-life 30.2 y then calculate the activity in becquerels and curies for a
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