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Problem 6.38:
The refrigeration cycle in Figure 6-21 shows a vapor compression cycle with recirculation. The vapor-liquid separator after the throttling valve recycles the vapor to the compressor and passes the liquid to the evaporator. This process uses the refrigerant R-134a with the evaporator temperature set at - 20 °C, the condenser at 30 °C, and with compressor efficiency of 75%. Determine the energy and entropy balances and compare the efficiency of this process to the simple vapor-compression cycle without recirculation.
determine the amount of Federal income tax due for the year on a cash basis and also on an accrual basis.
Develop a pro forma income statement for this strategy project in its 1st year of operation (Only to the level of EBIT)First identify the major cost drivers for this recommended entry strategy
Determine the acceleration potential (in Volts) that must be applied to electrons so that in an electron diffraction experiment of {200} planes of silver, Ag, they will result in first order diffraction at 2?
Which alarms should activate a shutdown trip, and which valves should be closed?
Plot the system curve on the pump characteristic given in Figure and determine the operating point and pump efficiency. Properties of the fluid: density 900 kg/m3, viscosity 1.36 mN m-2 s.
design a heat exchanger for the following dutyreduced crude oil leaving a distillation unit with a flow rate of 3166.04
Suppose the volumetric flow rate of the gas leaving the condenser is 20.0m3/h Calculate the rate (kg/h) at which acetone is vaporized in the solvent recovery unit.
Determine the current needed in the coil to produce a flux density of 1 T in the center limb, if the excitation coil has 500 turns.
Use Laplace transformation to solve the initial value problem
How much transmit power is required (disregarding power losses at transmitter and receiver ends) for a maximum BER of 10-5, when using:a. Coherently detected BPSKb. By how much must transmit power be increased to maintain the maximum BER of 10-5 if t..
Estimate the heat exchange area required for an evaporator that concentrates 4000 kg/h of apple juice by removing 40% of the water content. Low pressure steam at 120 °C is available as a heat source.
how many units of x should the firm use?
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