The air conditioner (a kind of vapour-compression refrigerator) in a 1500-cc car, which works on a pseudo-ideal reversed Rankine cycle, uses R-134a, the isentropic rotary-com- pressor of which consumes power at a rate of 1.5 kJ/s bringing the R-134a from 2.017 bar to 12 bar by compression. The cold space is a heat exchanger (using a hamster wheel as a blower) that cools atmospheric air from the outside temperature of 303 K down to 283 K and blows it into the car. Assume the start of compression process is state point 1. The refrigerant at evaporator exit is dry saturated vapour and saturated liquid at the condenser exit. Draw the schematic and T-s diagrams for the cycle. (a) What is the mass flow rate of the R-134a (mg-134a )? (b) What is the low-temperature heat transfer rate? (c) How much is the mass flow rate of air ( mi) at 283 K? For air, take cp = 1.004 kJ/(kg·K). %3D

The air conditioner (a kind of vapour-compression refrigerator) in a 1500-cc car, which works on a pseudo-ideal reversed Rankine cycle, uses R-134a, the isentropic rotary-com- pressor of which consumes power at a rate of 1.5 kJ/s bringing the R-134a from 2.017 bar to 12 bar by compression. The cold space is a heat exchanger (using a hamster wheel as a blower) that cools atmospheric air from the outside temperature of 303 K down to 283 K and blows it into the car. Assume the start of compression process is state point 1. The refrigerant at evaporator exit is dry saturated vapour and saturated liquid at the condenser exit. Draw the schematic and T-s diagrams for the cycle. (a) What is the mass flow rate of the R-134a (mg-134a )? (b) What is the low-temperature heat transfer rate? (c) How much is the mass flow rate of air ( mi) at 283 K? For air, take cp = 1.004 kJ/(kg·K). %3D

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Show that the system which is often referred to as an "incrementally linear" system below is NOT a linear system. You can use any linear relation between the input and output of the linear system block (yellow block).
A field party in Antarctica is using a tent that has been equipped with a small outdoor gasoline generator. The generator’s Thevenin equivalent circuit has V T of 120 V DC and the equivalent resistance, R T , of 10 Ω. There are two resistive heaters inside the tent: R 1 = 10 Ω and R 2 = 120 Ω , that can be connected to the generator separately, in series, or in parallel. For the highest heater power output, how should the heaters be connected to the generator?
Show your complete solution and attached it here. Answer must be in 4 decimal places. An industrial coil is modeled as a series combination of an inductance L and resistance R. Since an ac voltmeter measures only the magnitude of a sinusoid, the following measurements are taken at 60 Hz when the circuit operates in the steady-state: |Vs| = 145 V, |V1| = 50 V, |Vo| = 110 V Use these measurements to determine the values of L and R.
Suppose you are planning to go on a country-side tour riding your bike. In an unfortunate situation, you find the bike battery drained and currently you don’t have access to any spare battery or workshop. The only power source you have access to is the AC supply of 120V (rms) at 50 Hz. You check the battery and it’s clear from the description level that the battery requires 12V DC source to charge up. Moreover, you are well aware that the socket mounted to your available AC source gives spike that’s sometimes provide higher value than the rated one. To solve this problem, you plan to build a diode-based circuit to obtain a continuous and fixed voltage output as well as solve the instability problem of the source. Criteria: 1. Consider regular diodes, Zener diodes, resistor, and capacitor as your available components. However, the only available diodes here are Ge based and Si based. 2. You must choose a diode with PIV rating higher than the peak value of AC input. 3. Your…
Closed loop poles in a second order system -3 + 4j and -3-4j If so, what is the damping rate of the system? 3/44/35/45/33/5one4/50
MechatronixOne is a manufacturer of an industrial and toy robots. They are in the planning stage to develop a prototype AI robot for industry that will be supplied by a 12V DC with Izm = 20mA. This AI robot as they envision has a capability to understand litthe English command. Their problem is how to design an RC filtered power supply that can be used in their prototype AI robot which has a load range of 250 ohms to 1.25 kilo-ohms and since this is just a prototype it must be wired to the 240V 60Hz peak AC supply in their laboratory. They ask the VoltageMaker Company to ship them 20 pcs of 12V DC power supply and it must be included in the data sheet of load current in rms and peak, the PIV, the power range absorbed by the load, the ratio of the transformer, and the secondary rms voltage of the power supply. The power supply must be in a bridge type. Considering that you are a member of that team, what is your design? please answer or draw it clearly with labels. Thank you. this…
A 0.7-H inductor is connected in series with a 9-ohm resistor. If the connection is energized from an 11-V DC source, determine which among the following is a differential equation describing the current i in the circuit at any time t.
A piece of electrical component inside a gaming laptop uses a source of electromotive force, resistor, and inductor. If the voltage, resistance, and inductance are 4sin4t volts, 2 ohms, and 1 henry, respectively, what is the current along the circuit after 2 seconds when the initial current applied to the circuit is 0.6 amperes? Assume Kirchhoff's Voltage Law applies which states that travelling around any loop/circuit, the gains and losses of voltage across the elements add up to zero. Do not round off intermediate steps. Round off the final answer to two decimal places.
In the induction motor equivalent circuit, why R2\ is divided by s? * Your answer
write the complete solution asap
An AC source with ΔVrms = 120 V is connected between points a and d as shown. At what frequency will it deliver a power of 250 W? Explain your answer.
Question 5 Use the node-voltage method to find the steady-state expression for v_0(t) in the circuit belowif v_g1 = 25 sin (400t + 143.15◦)V v_g2 = 18.03 cos (400t + 33.69◦)V