pset2_sol

pset2_sol - T5 SOLUTIONS (Waitz) a) Draw a thermodynamic...

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0.5 0.75 1.0 1.25 1.5 50 100 150 200 250 300 200 250 300 350 400 450 500 550 600 0.5 0.75 1.0 1.25 1.5 T5 SOLUTIONS (Waitz) a) Draw a thermodynamic cycle on p-v and T- v diagrams consisting of Leg 1-2: adiabatic expansion Leg 2-3: constant volume heat addition Leg 3-4: constant pressure expansion Leg 4-1: isothermal compression Assume that all processes are quasi-static and involve an ideal gas. Pressure (kPa) lines of constant temperature 1 3 4 2 For 1-2, pv γ =constant adiabat is steeper than pv=constant (an Temperature (Kelvin) Specific Volume (m 3 /kg) isotherm) 3 4 1 2 lines of constant pressure For 1-2, Tv γ−1 =constant a curved line much like the adiabat on a p-v diagram but it would be shallower Specific Volume (m 3 /kg)
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b) For each leg determine if the heat and work transfers are (+), (-), or zero. Q ( +, -, or zero) W ( + , -, or zero) Leg 1-2 0 + Leg 2-3 + 0 Leg 3-4 + + - Leg 4-1 - c) Is the net work for this cycle positive or negative? The net work for this cycle is negative The area under the expansion process is less than the area under the compression processes. d) What common purpose might you use a cycle like this for and why? This cycle could serve as a cooler or refrigerator. Overall it takes in energy in the form of heat from cold temperatures and expels energy in the form of heat from high temperatures. The net work for the cycle as a whole is negative, meaning that energy is put into the system to enable these transfers of heat to take place.
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1. Modify the “Hello” program shown in class (Lecture C2) to display the following text on the screen: Hello World My name is Your Name GNAT 3.13 p ( 20000509 ) Copyright 1992 - 2000 Free Software Foundation, Inc. Compiling: c:/docume~ 2 /joeb/desktop/ 16070 /concep~ 1 /hello_world.adb (source file time stamp: 2003 - 09 - 10 08 : 55 : 28 ) 1 . ----------------------------------------------------- 2 . -- Program : To Display "Hello World 3 . -- My Name is Joe B" 4 . -- Programmer : Joe B 5 . -- Date Last Modified : 09/10/2003 6 . ------------------------------------------------------ 7 . 8 . 9 . with Ada.Text_Io; 10 . 11 . procedure Hello_World is 12 . 13 . begin -- Hello_World 14 . 15 . Ada.Text_Io.Put(Item => "Hello World " ); 16 . Ada.Text_Io.New_Line; 17 . Ada.Text_Io.Put(Item => "My Name is Joe B" ); 18 . 19 . end Hello_World; 19 lines: No errors 2. There are two errors that are seen: i. “raised SCREEN.WIN32_FILL_SCREEN_ERROR : screen.adb: 99 ” is seen when the output is redirected to the file. ii. “raised SPIDER.HIT_THE_WALL: spider.adb: 224 ” is seen when the output is only displayed on the screen 3. Write an algorithm to use the Feldman “spider package” to draw an inverted triangle as shown below. Turn in a hard copy of your code listing and an electronic copy of your code. RRRRRRR
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This note was uploaded on 01/28/2012 for the course AERO 16.01 taught by Professor Markdrela during the Fall '05 term at MIT.

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pset2_sol - T5 SOLUTIONS (Waitz) a) Draw a thermodynamic...

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