NDLI: Calculating the caloric properties of dissociated steam at high temperatures

Content Provider	Springer Nature Link
Author	Amiv, R. Z. Gudym, A. A.
Copyright Year	2014
Abstract	Lookup tables and the hs-diagram of the caloric parameters of dissociated steam are drawn up in the temperature and pressure ranges 1250–4000 K and 0.1–10 MPa for calculating the processes in thermal power installations that use dissociated steam as working fluid. Unlike the existing tables for thermophysical properties of dissociated steam, the enthalpy presented in the proposed tables has positive values in the entire range of the considered parameters. The enthalpy of mixture includes the entire energy spent in the chemical reaction of dissociation for breaking the bonds in steam molecules. The caloric parameters are determined from the reference temperature equal to 0°C adopted in the methods for calculating the parameters of nondissociated steam, due to which it becomes possible to carry out coordinated calculations of processes in thermal power installations. Supplements to the existing tables for calculating the above-mentioned caloric parameters are developed. Dissociated steam expansion processes are calculated for the conditions with and without recombination of dissociation products at the same values of initial parameters and final pressure. It has been determined that the change of enthalpy and the work done in the expansion process without recombination are smaller than they are in the process involving recombination of dissociation products. The error of the performed calculations of caloric parameters is less than 0.1%.
Starting Page	822
Ending Page	828
Page Count	7
File Format	PDF
ISSN	00406015
Journal	Thermal Engineering
Volume Number	61
Issue Number	11
e-ISSN	15556301
Language	English
Publisher	Pleiades Publishing
Publisher Date	2014-10-09
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	dissociated steam enthalpy entropy formation heat reference temperature thermal power installations Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Nuclear Energy and Engineering

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