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37 633 (0,105s)

Výsledek výzkumu

The influence of water vapor condensation to heat recovery heat exchanger efficiency

Condensation of water vapor in regular heat recovery heat exchangers is not an exceptional state, but its influence is usually neglected. In the article is described possible efficiency increase due to rise of transferred <...

JE - Nejaderná energetika, spotřeba a užití energie

  • 2012
  • Jx
Výsledek výzkumu

Temperature dependence of vaporization heats of organic compounds

Heat of vaporization is a very important physico-chemical property with a wide usage. It can be used for some chemical-engineering calculations, for estimation dependence of vaporization heats in literature. This a...

CF - Fyzikální chemie a teoretická chemie

  • 2002
  • Jx
Výsledek výzkumu

Experimental Study of Horizontal Flow Boiling Heat Transfer Coefficient and Pressure Drop of R134a from Subcooled Liquid Region to Superheated Vapor Region

for low heat fluxes of 4.6-8.5 kW/m(2), mass fluxes of 200-300 kg/(m(2)s), vapor. In covering a wide range of vapor quality, a peak of heat transfer coefficient near flux. Generally, at low vapor quality,...

Energy and fuels

  • 2022
  • Jimp
  • Odkaz
Výsledek výzkumu

Vapor pressure and thermal properties of heavy oil distillation cuts

The vapor pressure, liquid heat capacity, and heat of combustion were measured apparatus. Derivatives of fitted vapor pressure equations were used to determine heats of vaporization based on the C...

BJ - Termodynamika

  • 2016
  • Jx
  • Odkaz
Výsledek výzkumu

Determination of saturated vapor pressures and heats of vaporization from gas chromatography retention data.

In this article, several equations proposed to relate GC elution characteristics for low-volatility liquid and solid chemicals to their saturated vapor pressures and heats of vaporization are analyzed and compared....

CF - Fyzikální chemie a teoretická chemie

  • 2002
  • Jx
Výsledek výzkumu

Vapor pressure, heat capacities, and phase transitions of tetrakis(tert-butoxy)hafnium

Vapor pressure, liquid heat capacities, and phase change enthalpies)hafnium are reported. The vapor pressure was measured using the static method in the temperature range from 280 to 308 K. The standard vaporization

CF - Fyzikální chemie a teoretická chemie

  • 2011
  • Jx
  • Odkaz
Výsledek výzkumu

Recommended vapor pressures for thiophene, sulfolane, and dimethyl sulfoxide

of vapor pressure and related thermal data (heat capacities of condensed phases, ideal gas heat capacities and calorimetrically determined enthalpies of vaporization). For sulfolane and dimethyl sulfoxide, new

CF - Fyzikální chemie a teoretická chemie

  • 2011
  • Jx
  • Odkaz
Výsledek výzkumu

The Influence of Low Rate Water Vapor Condensation to Performance of Sensible Heat Recovery

The article desribes influence of low rate of water vapor condensation to the performance of flat-plate compact air-to-air heat recovery heat exchanger in a ventilation analysisis also used. Exergy based approach to tested ...

JE - Nejaderná energetika, spotřeba a užití energie

  • 2013
  • D
Výsledek výzkumu

Flow Boiling Heat Transfer of R134a at Varying Heat Fluxes

quality incipience is not affected appreciably by heat flux. All the dry-out vaporThis study presents an experimental analysis of flow boiling heat transfer of investigating the effect of heat flux on heat

Mechanical engineering

  • 2023
  • JSC
  • Odkaz
Výsledek výzkumu

Flow Boiling Heat Transfer Of R134a: Effect Of Heat Flux And Dry-Out Characteristics

is not highly affected by heat flux. All the dry-out vapor quality incipience correlationsThis study presents an experimental analysis of flow boiling heat transfer of investigating the effect of heat flux on

Mechanical engineering

  • 2023
  • D
  • Odkaz
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