MEEN 315 SECTION 503 PRINCIPLES OF THERMODYNAMICS Spring 2013 Homework 3 DUE February 5 2013 1 Review the online auxiliary lecture Reversible and Irreversible Processes Write a brief description 1 paragraph about why a melting ice cube is an irreversible process Write a brief description 1 paragraph about why a turbine could be idealized as a reversible process 2 Suppose a 0 5 m3 closed system contains 2 kg of steam at a pressure of 1000 kPa a temperature of 284 C an internal energy of 2767 3 kJ kg and an entropy of 7 06 kJ kg K Determine the specific volume total internal energy and total entropy Identify those properties that are intensive versus those properties that are extensive 3 Identify the two major classes of energy Describe fully the types of energy that fall within each of these classes An ideal gas is defined as being composed of particles which behave independently of each other In terms of class and type of energy describe what it means for the particles to behave independently Describe the three ways energy can be transferred between a system and its surroundings Describe the two ways entropy can be transferred between a system and its surroundings What is a third way entropy can be added to a system 4 Create a table of thermodynamic properties that are routinely used in thermodynamics In the table include the name of the property the symbol that is used to present it the common English units the common metric units and its type i e intensive or extensive 5 Create a Solution Neutral Function Structure with the purpose of converting one form of energy into useful or work energy Generate a Need Statement and identify the functional requirements that must be satisfied by any viable solution to the need statement Review the online auxiliary lecture Reversible and Irreversible Processes Write a brief description I paragraph about why a melting ice cube is an irreversible process Write a brief description paragraph about why a turbine could be idealized as a reversible process w l V I c e c vbtL IN l i t s i i v tM lllVo1 N IS em 3 1 F d 4 tV J wfIC Sv Sill l a h Ze c v 6e i l J 3J 4 II G 3 z F Hut JIu rruJ r f r V Fl v 1S Io fk Ice c t If i tl fk dtt c c 4 e Is rr f o refp e t tw mJ rU lJ tac c o J v F 11 p is s tv ct It f 171V r t tlv v Ct h t Je 4 1 k d WN net Iht 1 s 7 r J4 fCc I p a f rw1 k l4 tu IS orr I Irr oltb T bl If IJ I l a s sv Of rCf ud vriJr L e llO rtc 4 Vlo fNw t N t1s r w r f 55t s I J t iJ N IN r lit ie C V It 4 J Ie ti Y1 s frrru J 0 ut ts CU t rktVtI fJ v J n f4Il Vti h s de Jt ill v r J h U fb t vu v jl5 i o flc thv f lv v ef tf I YWI t N j lAs f Iht s IZbw t UJ 1N5J to V ll o cJc fo J l I e k rtVVte As J Suppose a 0 5 m closed system contains 2 kg of steam at a pressure of 1000 kPa a temperature of 284 C an internal energy of 2767 3 kJ kg and an entropy of 7 06 kJ kg K Detennine the specific volume total internal energy and total entropy Identify those properties that are intensive versus those properties that are extensive v p O m 3 v VOComg V tJ c W 5 M l 1 dF f 0 c u n 9 3 kl 0 V g r rJ O f Ic im iA o VOk F 2 02 T Af S lC C 1 rn 5 x T t Yr v SI fa 1 s S c C 1000 eMl1rY1 sr w Cte j s t ru c J C u tf 1 s VbCvflV U l as rVt nu1 vN111 tin rrr J fJ V Identify the two major classes of energy Describe fully the types of energy that fall within each of these classes An ideal gas is defined as being composed of particles which behave independently of each other In terms of class and type of energy describe what it means for the particles to behave independently rckJ s S c OV I t n f i 1 i kf s fj c f r J tc VVL eA t 4 o rr I v II UNl lh fl fc d o roS rtr VI C I 1 MqY1 J I Describe thetthree ways energy can be transferred between a system and its surroundings Describe the two ways Ii can be transferred between a system and its surroundings What is a third way entropy can bc added to a system Create a table of thermodynamic properties that are routinely used in thermodynamics In the table include the name of the property the symbol that is used to present it the common English units the common metric units and its type i e intensive or extensive S rewtiTAJ tve vvJo T P T lL I I I 41 E l t kpc Int M s l ki rexi VO Wl 11 A EX TAl 5 S 1 1 r f Jo v V r 1 S P i t rt f1q IIe VoG u Ey rr1f TVl t Eyt J rt Ed L rt VIi Lit Ivrb