A survey of thermodynamic properties of the compounds of the element CHNOPS Progress report, 1 Mar. - 30 Jun. 1968

Thermodynamic property data tables for CHNOPS compounds and heats of combustion and formation for organic compounds of biological interes

Thermophysical properties of parahydrogen from the freezing liquid line to 5000 R for pressures to 10000 psia

The tables include entropy, enthalpy, internal energy, density, volume, speed of sound, specific heat, thermal conductivity, viscosity, thermal diffusivity, Prandtl number, and the dielectric constant for 65 isobars. Quantities of special utility in heat transfer and thermodynamic calculations are also included in the isobaric tables. In addition to the isobaric tables, tables for the saturated vapor and liquid are given, which include all of the above properties, plus the surface tension. Tables for the P-T of the freezing liquid, index of refraction, and the derived Joule-Thomson inversion curve are also presented

Thermodynamic curvature and black holes

I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the same for any given thermodynamic state. In fluid and solid systems, the sign of $R$ indicates the character of microscopic interactions, repulsive or attractive. $|R|$ gives the average size of organized mesoscopic fluctuating structures. The broad generality of thermodynamic principles might lead one to believe the same for black hole thermodynamics. This paper explores this issue with a systematic tabulation of results in a number of cases.Comment: 27 pages, 10 figures, 7 tables, 78 references. Talk presented at the conference Breaking of Supersymmetry and Ultraviolet Divergences in extended Supergravity, in Frascati, Italy, March 27, 2013. v2 corrects some small problem

How parameters and regularization affect the PNJL model phase diagram and thermodynamic quantities

We explore the phase diagram and the critical behavior of QCD thermodynamic quantities in the context of the so-called Polyakov--Nambu--Jona-Lasinio model. We show that this improved field theoretical model is a successful candidate for studying the equation of state and the critical behavior around the critical end point. We argue that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The effects of the regularization procedure in several thermodynamic quantities is also analyzed. The results are compared with simple thermodynamic expectations and lattice data.Comment: 27 pages, 7 figures, 4 tables; PRD versio

New Hyperon Equations of State for Supernovae and Neutron Stars in Density-dependent Hadron Field Theory

We develop new hyperon equation of state (EoS) tables for core-collapse supernova simulations and neutron stars. These EoS tables are based on a density-dependent relativistic hadron field theory where baryon-baryon interaction is mediated by mesons, using the parameter set DD2 from Typel et al. (2010) for nucleons. Furthermore, light and heavy nuclei along with the interacting nucleons are treated in the nuclear statistical equilibrium model of Hempel and Schaffner-Bielich which includes excluded volume effects. Of all possible hyperons, we consider only the contribution of $\Lambda$s. We have developed two variants of hyperonic EoS tables: in the np$\Lambda \phi$ case the repulsive hyperon-hyperon interaction mediated by the strange $\phi$ meson is taken into account, and in the np$\Lambda$ case it is not. The EoS tables for the two cases encompass wide range of density ($10^{-12}$ to $\sim$ 1 fm$^{-3}$), temperature (0.1 to 158.48 MeV), and proton fraction (0.01 to 0.60). The effects of $\Lambda$ hyperons on thermodynamic quantities such as free energy per baryon, pressure, or entropy per baryon are investigated and found to be significant at high densities. The cold, $\beta$-equilibrated EoS (with the crust included self-consistently) results in a 2.1 M$_{\odot}$ maximum mass neutron star for the np$\Lambda \phi$ case, whereas that for the np$\Lambda$ case is 1.95 M$_{\odot}$. The np$\Lambda \phi$ EoS represents the first supernova EoS table involving hyperons that is directly compatible with the recently measured 2 M$_{\odot}$ neutron stars.Comment: 39 pages, 9 figures, 11 tables; matches published version, only minor additions and editorial change

Practical Data Correlation of Flashpoints of Binary Mixtures by a Reciprocal Function: The Concept and Numerical Examples

Simple data correlation of flashpoint data of binary mixture has been developed on a basic of rational reciprocal function. The new approximation requires has only two coefficients and needs the flashpoint temperature of the pure flammable component to be known. The approximation has been tested by literature data concerning aqueous-alcohol solution and compared to calculations performed by several thermodynamic models predicting flashpoint temperatures. The suggested approximation provides accuracy comparable and to some extent better than that of the thermodynamic methods.Comment: 6 pages and 5 tables IN PRESS; Thermal Science vol. 15, issue 3, 201

A solvable model of a random spin-1/2 XY chain

The paper presents exact calculations of thermodynamic quantities for the spin-1/2 isotropic XY chain with random lorentzian intersite interaction and transverse field that depends linearly on the surrounding intersite interactions.Comment: 14 pages (Latex), 2 tables, 13 ps-figures included, (accepted for publication in Phys.Rev.B

Blowing off Steam Tables

In thermodynamics courses, there is appreciable time and effort devoted to teaching steam tables. Despite this, students still find the ability to use steam tables for retrieving thermodynamic properties a challenging skill to master. The challenges arise from the need to interpolate, the need to identify the correct region, and the requisite familiarity with property trends. The use of steam tables to retrieve thermodynamic properties is often presented to students as a keystone skill for subsequent study of steam power plants. However, if graduates do not require this skill in practice, perhaps we are simply teaching an obsolete system that serves the course objectives but not beyond. Several compelling alternatives exist. Among them, computerized thermodynamic property databases for common substances are readily available and can rapidly supply state properties. However, we want to avoid tools that simply supply property values without reinforcing thermodynamic fundamentals. For instance, steam tables can supply accurate property values, but they fail to emphasize the interdependence of these properties. Instead, the use of property diagrams to solve thermodynamic problems can greatly improve students’ understanding of thermodynamics by visualizing property relationships. As a highly visual and intuitive tool, property diagrams eliminate the time devoted to mastering steam tables. After teaching steam tables for multiple years within a year-long thermal-fluid sciences course and recognizing the poor pedagogic utility, the steam tables were entirely replaced by the temperature-entropy diagram as the primary source for water thermodynamic properties. This paper discusses the implementation, challenges, and the outcomes of this introduction. Apart from developing instructions aligned solely to property diagrams, a number of visual tools were identified, adopted, and developed to facilitate the transition. The overall outcomes were notably positive from a student learning perspective. Students quickly became comfortable using the T-s diagrams to solve the same textbook problems they would have solved using steam tables. The loss of accuracy was more than made up by their ability to quickly identify a state and retrieve its properties. Furthermore, students improved their ability to predict property trends when compared to students who relied primarily on steam tables. The results highlight the need for change in thermodynamics pedagogy by abandoning steam tables and emphasizing the fundamentals necessary to study steam power plants