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The annual cost of operating a heat pump at year-end prices is R, with units of $/yr. The costs are expected to inflate at a yearly rate of f. Money is discounted at the yearly rate of i. The life of the heat pump is n years. The potential cost benefits of the heat pump are to be examined by placing all costs on a uniform annual basis.
A. Show that the uniform annual costs are
What is the PW of R? What is the annual value, Ac, of PW? Simplify the expression for Ac.
B. Compute Ac for R = $7,800.00/yr, f = 5%, n = 25 yr, and i = 10%
a privately owned summer camp has the following data for a 12-week sessioncharge per camper 480 per weekfixed costs
a hydraulic system has a mechanical advantage of 4. If a smaller piston has a diameter of 5 inches what is the diameter of the larger piston?
suppose a heat engine is connected to two energy reservoirs one apool of molten aluminum 660degc and the other a block
How do you the bubble point temperature and Vapor mole fractions at the bubble-point for a mixture at 690kPa that is 10.0mol % ethylene, 40.0 mol % ethane, and 50.0 mole % propane. Use the Depriester chart.
determine the actual and minimum theoretical operating costs, each in $/day.
What is the compressor's steady state response when a 30kg absorber with a stiffness of 1.3*10^5 N/m is added to the end of the beam? Please determine how to change the absorber to minimize the response of the beam.
A 10-kg mass slides down a ramp inclined at 30o from the horizontal a total vertical distance of 3 m. Determine the velocity of the mass when it reaches the bottom, neglecting friction and air resistance.
an air-hockey puck has a mass of 50 g and is 9 cm in diameter. it is placed on an air hockey table at 20 c and the film
a grade 30 cast iron pressure vessel has a sealed head diamter of 20 inches. it uses ten 114 unf steel studs that are
steam enters a turbine at 40 bars 440c and 100 ms through an pipe with a cross-sectional area of 0.050 m2. at the exit
A load of lumber of weight W = 20 kN is being raised by a mobile crane. Knowing the tension is 20 kN in all portions of the cable AEF and that the weight of the boom ABC is 3 kN, determine (a) the tension in rod CD (b) the reaction at pin B.
Calculate the pressure of 15.0g of methane gas in a 1.50L vessel at 45.0 degrees C using (a) the Ideal Gas Law and (b) the van der Walls equation using the following information about the constants, a and b: a = 2.253 and b = 0.04278.
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