NO. | QUESTIONS | |||
1 |
Compress liquid and superheated x is (-) Saturated liquid x =0 [No pressure in table compress liquid water A7] and [For refrigerant-134a no compress table] so take saturated liquid for example Vf T V 300’ 2.6389 360’ ? 400’ 3.1027 Solution: 360-300 = ? - 2.6389 400-300 3.1027-2.6389havg=hf + x hfg u>ug superheated vapor | |||
2 |
| |||
3 |
Open system is matter may flow in and out of the system boundaries Closed system is energy can cross the boundaries the form of heat or work
| |||
4 |
Kelvin-it is impossible for any device that operates on a cycle, to receive heat from a single reservoir and produce a net amout of work ( Kelvin-tidak mungkin untuk setiap peranti yang beroperasi pada kitaran, untuk menerima panas dari reservoir tunggal dan menghasilkan amout bersih kerja) Clausius-it is impossible to construct a device that operates in a cycle and produces no effect other than the transfer of heat from a lower temperature body to a higher temperature body ( Clausius-tidak mungkin untuk membina sebuah peranti yang beroperasi dalam kitaran dan tidak menghasilkan kesan lain selain transfer panas dari suhu tubuh lebih rendah ke suhu badan lebih tinggi)
{heat engine & heat pump} LOOK NOTE LEC.GIVE | |||
5 |
Theory carnot—carnot was the first to introduce the concept of cyclic operation and devised a reversible cycle that is composed of four reversible processes, two isothermal and two adiabatic.
|
Sunday, February 6, 2011
Final thermodynamics
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment