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Estimation Of The Entropy Of Vaporization At The Normal Boiling Point For Azeotropic Mixtures Containing Water, Alcohol Or Acetic Acid, Yasar Demirel
Estimation Of The Entropy Of Vaporization At The Normal Boiling Point For Azeotropic Mixtures Containing Water, Alcohol Or Acetic Acid, Yasar Demirel
YASAR DEMIREL
The entropy of vaporization at the normal boiling point has been estimated for binary and ternary azotropic mixtures containing water, alcohol or acetic acid. For this purpose, the Lee±Kesler correlation, developed originally for pure substances, is used with the appropriate mixing rules to estimate the heat of vaporization of the mixtures. Estimations for the entropy of vaporization of the 97 binary and 78 ternary mixtures are expressed as function of the ratio of the normal boiling point to average molecular weight. These expressions predict the entropy of vaporization satisfactorily, with less than 5% average deviation.
Entropy Generation In A Rectangular Packed Duct With Wall Heat Flux, Yasar Demirel, R. Kahraman
Entropy Generation In A Rectangular Packed Duct With Wall Heat Flux, Yasar Demirel, R. Kahraman
YASAR DEMIREL
The entropy generation due to heat transfer and friction has been calculated for fully developed, forced convection flow in a large rectangular duct. packed with spherical particles, with constant heat fluxes applied to both the top (heated) and bottom (cooled) wall. An approximate analytical expression for the velocity profile developed for packed bed with H/dp > 5 has been used together \vith the energy equation of fully developed flow to calculate the nonisothermal temperature profiles along the flow passage. The velocity prolile takes into account the increase in the velocity near the wall due to the higher voidage in this region …
Estimation Of The Entropy Of Vaporization At The Normal, Yasar Demirel
Estimation Of The Entropy Of Vaporization At The Normal, Yasar Demirel
YASAR DEMIREL
The entropy of vaporization at the normal boiling point has been estimated for binary and ternary azotropic mixtures containing water, alcohol or acetic acid. For this purpose, the Lee±Kesler correlation, developed originally for pure substances, is used with the appropriate mixing rules to estimate the heat of vaporization of the mixtures. Estimations for the entropy of vaporization of the 97 binary and 78 ternary mixtures are expressed as function of the ratio of the normal boiling point to average molecular weight. These expressions predict the entropy of vaporization satisfactorily, with less than 5% average deviation
Energetic And Exergetic Efficiency Of Latent Heat Storage System For Greenhouse Heating, Yasar Demirel, A Bascetincelik, Hh. Ozturk, H.O. Paksoy
Energetic And Exergetic Efficiency Of Latent Heat Storage System For Greenhouse Heating, Yasar Demirel, A Bascetincelik, Hh. Ozturk, H.O. Paksoy
YASAR DEMIREL
In this research, solar energy has been stored using the paraffin with the latent heat technique for heating the plastic greenhouse of 180 m2.
Irreversibility Profiles In A Circular Couette Flow Of Temperature Dependent Materials, Yasar Demirel
Irreversibility Profiles In A Circular Couette Flow Of Temperature Dependent Materials, Yasar Demirel
YASAR DEMIREL
The irreversibility distributions have been calculated for a circular Couette flow of ethylene glycol with temperature dependent thermal conductivity and viscosity. The approximate series solutions of velocity and temperature fields are used to obtain the gradients to calculate the spatial entropy generation rate with narrowing gap of the Couette. It was found that the irreversibility distribution is relatively more uniform for a narrow-gap Couette.