Chap. 3 Some general statements
... Two examples of diabatic heating/cooling 1. absorption/emission of radiation; 2. heating/cooling associated with water phase changes In the moist atmosphere, there are cases where heat supplied to a parcel without a corresponding change in temperature. Under such conditions, the water substance is c ...
... Two examples of diabatic heating/cooling 1. absorption/emission of radiation; 2. heating/cooling associated with water phase changes In the moist atmosphere, there are cases where heat supplied to a parcel without a corresponding change in temperature. Under such conditions, the water substance is c ...
Provedení, principy činnosti a základy výpočtu pro výměníky tepla
... value at 300K is cp=5193 J/kg/K. This agrees quite well, because cp-cv=R/M=8.314/0.004=2078 J/kg/K, see the Mayer’s equation). ...
... value at 300K is cp=5193 J/kg/K. This agrees quite well, because cp-cv=R/M=8.314/0.004=2078 J/kg/K, see the Mayer’s equation). ...
Chapter 2-C
... the phosphorous pentoxide, into hydrogen and oxygen. Two electrons are required for electrolyzing each water molecule, and so the current in the cell represents the number of molecules dissociated. A further calculation, based on flow rate temperature and current yields the humidity in ppm. ...
... the phosphorous pentoxide, into hydrogen and oxygen. Two electrons are required for electrolyzing each water molecule, and so the current in the cell represents the number of molecules dissociated. A further calculation, based on flow rate temperature and current yields the humidity in ppm. ...
Second Law of Thermodynamics
... For a reversible adiabatic expansion dq=0 and the entropy change is ds=0. This is the isentropic process defined previously. c) heating of an ideal gas at constant volume For a reversible process, and dα=0. Then ds = dqrev/T = cvdT/T = cvdlnT. d) heating of an ideal gas at constant pressure For a re ...
... For a reversible adiabatic expansion dq=0 and the entropy change is ds=0. This is the isentropic process defined previously. c) heating of an ideal gas at constant volume For a reversible process, and dα=0. Then ds = dqrev/T = cvdT/T = cvdlnT. d) heating of an ideal gas at constant pressure For a re ...
CHAP4
... For a reversible adiabatic expansion dq=0 and the entropy change is ds=0. This is the isentropic process defined previously. c) heating of an ideal gas at constant volume For a reversible process, and d=0. Then ds = dqrev/T = cvdT/T = cvdlnT. d) heating of an ideal gas at constant pressure For a re ...
... For a reversible adiabatic expansion dq=0 and the entropy change is ds=0. This is the isentropic process defined previously. c) heating of an ideal gas at constant volume For a reversible process, and d=0. Then ds = dqrev/T = cvdT/T = cvdlnT. d) heating of an ideal gas at constant pressure For a re ...
Non-Ideal Chains: Size, Statistics, Free
... provide R ∼ N 0.588 . However, the success of the Flory theory is due to a cancelation of errors. The excluded volume contributions are overestimated as correlations between monomers (which decrease the probability of overlap) are not considered. At the same time, the entropic restoring force is als ...
... provide R ∼ N 0.588 . However, the success of the Flory theory is due to a cancelation of errors. The excluded volume contributions are overestimated as correlations between monomers (which decrease the probability of overlap) are not considered. At the same time, the entropic restoring force is als ...
lect1f
... In a non-equilibrium system the state functions change in time, the system tends to be in equilibrium. Meta-stable state: the state is not of minimal energy, energy is necessary for crossing an energy barrier. A reversible change is one that can be reversed by an infinitesimal modification of one ...
... In a non-equilibrium system the state functions change in time, the system tends to be in equilibrium. Meta-stable state: the state is not of minimal energy, energy is necessary for crossing an energy barrier. A reversible change is one that can be reversed by an infinitesimal modification of one ...
II. THE FIRST LAW OF THERMODYNAMICS AND RELATED
... relationship known as Joule's Law. It can also be shown (e.g., this was used in the derivation of the equation of state using statistical mechanics, Ch. 2 notes) that for an ideal monatomic gas, the kinetic energy of translations is given by pV = (1/3)N0mu2 = (2/3)Ekin = RT, where N0 is Avogadro's n ...
... relationship known as Joule's Law. It can also be shown (e.g., this was used in the derivation of the equation of state using statistical mechanics, Ch. 2 notes) that for an ideal monatomic gas, the kinetic energy of translations is given by pV = (1/3)N0mu2 = (2/3)Ekin = RT, where N0 is Avogadro's n ...
PHY115 Concepts of Physics
... e) the ‘acceleration due to gravity’ – “free fall” 1) Explain how the ‘acceleration due to gravity’ is dependant upon the size, mass, ‘density’ and shape of a body in the presence of air resistance and demonstrate how the ‘terminal velocity’ of a given body falling in air may be altered. 2) State th ...
... e) the ‘acceleration due to gravity’ – “free fall” 1) Explain how the ‘acceleration due to gravity’ is dependant upon the size, mass, ‘density’ and shape of a body in the presence of air resistance and demonstrate how the ‘terminal velocity’ of a given body falling in air may be altered. 2) State th ...
Thermodynamics and Irreversibility
... • For reversible paths, Pint = Pext , so there is no difference in the calculation of dU. • For irreversible paths, we will get a difference in the calculation of δ W . This difference of work calculation will change the “predicted” reached point in the Clapeyron diagram; for example, shall we reach ...
... • For reversible paths, Pint = Pext , so there is no difference in the calculation of dU. • For irreversible paths, we will get a difference in the calculation of δ W . This difference of work calculation will change the “predicted” reached point in the Clapeyron diagram; for example, shall we reach ...
The Laws of Thermodynamics
... exchange heat with the ice, we say that they are in thermal contact. When they stop exchanging heat energy, we say that they are in thermal equilibrium. So what if we have 2 cans of soda, and we want to know if they are in thermal equilibrium. How can we tell? We would take a thermometer (a third ob ...
... exchange heat with the ice, we say that they are in thermal contact. When they stop exchanging heat energy, we say that they are in thermal equilibrium. So what if we have 2 cans of soda, and we want to know if they are in thermal equilibrium. How can we tell? We would take a thermometer (a third ob ...
Document
... There is also an f value for emission gu fem = gl fabs Most f values are determined from laboratory measurements and most tables list gf values. Often the gf values are not well known. Changing the gf value changes the line strength, which is like changing the abundance. Standard procedure is you ta ...
... There is also an f value for emission gu fem = gl fabs Most f values are determined from laboratory measurements and most tables list gf values. Often the gf values are not well known. Changing the gf value changes the line strength, which is like changing the abundance. Standard procedure is you ta ...
A Lattice Model of Liquid Helium» II I. Introduction
... shows that the solution obtained above is valid only when the temperature is lower than the critical temperature TJ. defined by 4 exp [4 + r] -1 = 0 or ...
... shows that the solution obtained above is valid only when the temperature is lower than the critical temperature TJ. defined by 4 exp [4 + r] -1 = 0 or ...
Kelvin scale
... peratures are directly related to the energy possessed by matter. Thus, kelvins are regarded as a measure of thermodynamic temperatures. As such, the Kelvin scale is preferred when discussing relations dealing with the physical properties of materials. To become familiar with kelvins, do not conv er ...
... peratures are directly related to the energy possessed by matter. Thus, kelvins are regarded as a measure of thermodynamic temperatures. As such, the Kelvin scale is preferred when discussing relations dealing with the physical properties of materials. To become familiar with kelvins, do not conv er ...
Section 3 Entropy and Classical Thermodynamics
... 3.1 Entropy in thermodynamics and statistical mechanics 3.1.1 The Second Law of Thermodynamics There are various statements of the second law of thermodynamics. These must obviously be logically equivalent. In the spirit of our approach we shall adopt the following statement: • There exists an exten ...
... 3.1 Entropy in thermodynamics and statistical mechanics 3.1.1 The Second Law of Thermodynamics There are various statements of the second law of thermodynamics. These must obviously be logically equivalent. In the spirit of our approach we shall adopt the following statement: • There exists an exten ...
