000003245 001__ 3245
000003245 005__ 20141118153406.0
000003245 04107 $$acze
000003245 046__ $$k2005-05-09
000003245 100__ $$aBayer, Z.
000003245 24500 $$aThe first variants of a new system of simple, middle accurate approximations of some state variables and derivatives of wet vapor of H2O

000003245 24630 $$n11.$$pENGINEERING MECHANICS 2005
000003245 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Brno
000003245 506__ $$arestricted
000003245 520__ $$2eng$$aA set of approximations for the specific volume of saturated liquid and saturated vapor, saturation pressure and for the isothermal derivatives (∂π/∂ϕ´)τ , (∂π/∂ϕ“)τ including a concept of some theirs combinations is given. It π/∂ π/∂ is shown that the accuracy of approximations depends both on the approximated quantity and on its approximating analytical form. The accuracy moves between a percentage fraction up to 5 % of maximum value of the pertinent function. After a numerous tests the function τ X1.(1−τ) X2 has been chosen as a general approximation function. The values of exponents and coefficients optimized by the least squares method, the courses of approximated quantities and their approximating functions as well as their deviations from correct data are given.

000003245 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003245 653__ $$a

000003245 7112_ $$aENGINEERING MECHANICS 2005$$cSvratka (CZ)$$d2005-05-09 / 2005-05-12$$gEM2005
000003245 720__ $$aBayer, Z.
000003245 8560_ $$ffischerc@itam.cas.cz
000003245 8564_ $$s156960$$uhttp://invenio.itam.cas.cz/record/3245/files/Bayer-PT.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000003245 962__ $$r3238
000003245 980__ $$aPAPER