the reliability of the apparatus, and four Cvalues of the new refrigerant HFC-134a have also been measured and discussed concerning the ideal-gas specific heat by comparing with Cvalues derivrd from sound velocity measurements, spectroscopic measurements or existing equation of state for HFC-134a.do...
On the thermodynamics of refrigerant + heterogeneous solid surfaces adsorption. (a)), and the specific heat capacity (c(p,a)) of the adsorbed phase are derived using the thermodynamic requirements of chemical equilibrium, Gibbs ... AB Ismail,A Li,K Thu,... - 《Langmuir the Acs Journal of...
Refrigerant R134a 1410 It is measured usually with J/kg K. Specific heat of nanofluids can be determined using Eqs. (5) and (6)). (5)Cp,nf=φCp,np+(1-φ)Cp,bf and (6)(ρCp)nf=φ(ρCp)np+(1-φ)(ρCp)bf It is thought that Eq. (6) is theoretically more consistent since...
the implications of the Dual Model of Liquids (DML) by deriving the expression for the isochoric specific heat as a function of the collective degrees of freedom available at a given temperature and comparing it with the analogous expression obtained in the Phonon Theory of Liquid Thermodynamics. ...
The calorimeter for measuring the isobaric specific heat capacity of natural refrigerant was constructed. The calorimeter is batch type with the metal-bellows and based on the thermal relaxation method. The apparatus constants were calibrated by using water, methanol and R134a (1,1,1,2-...
refrigerantmixturespecific heatcalculationR134aR152aR125R32R143ameasurementThe specific heat capacity at constant pressure (cp) of some relevant HFCs as replacements for R12, R502 and R22 was measured. The liquids investigated are binary or ternary mixtures of R134a, R152a, R125, R32 and R143a. ...
In the vapor cycle, the refrigerant enters the electric compressor at a slightly superheated vapor state and is compressed to a higher pressure. The temperature of the refrigerant also increases after the compression step. Then, the refrigerant enters the condenser and is condensed into a saturated...