Steam pressure/temperature table

TABLE 14. Correlation Among Steam Pressure, Temperature, Latent Heat, and Specific Volume... 

Although hydration under hydrothermal conditions may be rapid, metastable iatermediate phases tend to form, and final equiUbria may not be reached for months at 100—200°C, or weeks at even higher temperatures. Hence, the temperatures of formation given ia Table 6 iadicate the conditions under saturated steam pressure that may be expected to yield appreciable quantities of the compound, although it may not be the most stable phase at the given temperature. The compounds are Hsted ia order of decreasiag basicity, or lime/siHca ratio. Reaction mixtures having ratios C S = 1 yield xonotHte at 150—400°C. Intermediate phases of C—S—H (I), C—S—H (II), and crystalline tobermorite ate formed ia succession. Tobermorite (1.13 nm) appears to persist indefinitely under hydrothermal conditions at 110—140°C it is a principal part of the biader ia many autoclaved cement—silica and lime—silica products. 

Steam temperature = 262 + 60 = 322°F Steam pressure = 92 psia Latent heat (from steam tables) k steam = 893.4 Btu/hr... 

Table 11-1 presents a few of the many possible operating conditions for these systems. The same refrigerating plant may operate through a wide range of pressures and temperatures. Table 11-2 presents a summary of utilities required for absorption plants. The steam indicated can be substituted by direct gas, waste heat, or other stream at an equivalent temperature level. 

Similar results have been obtained by Bonilla and Perry 79>, Insinger and Bliss 801, and others for a number of organic liquids such as benzene, alcohols, acetone, and carbon tetrachloride. The data in Table 9.9 for liquids boiling at atmospheric pressure show that tile maximum heat flux is much smaller with organic liquids than with water and the temperature difference at this condition is rather higher. In practice the critical value of AT may be exceeded. Sauer et al.m] found that the overall transfer coefficient U for boiling ethyl acetate with steam at 377 kN/m2 was only 14 per cent of that when the steam pressure was reduced to 115 kN/m2. 

Table 20.2 Pressure-temperature relationships and antimicrobial efiScacies of alternative steam sterilization cycles... 

The jacket steam pressure, Pj, is itself a function of the jacket steam temperature, Tj, as listed in steam tables or as correlated by the Antoine equation for vapour pressure, where... 

Various curing conditions are followed for various product lines. The following are temperature-steam pressure equivalents of saturated steam at sea level. Source Steam Tables of Marks and Davis, Longmans Green Co. 

The most common heat carrier for heating industrial reactors is steam, providing an efficient and simple means. The efficiency of steam is due to its high latent heat of condensation (AHv = 2260 kj kg1 at 100 °C). For saturated steam, the temperature can be controlled by its pressure. Some values are presented in Table 9.1. The pressure and latent heat of evaporation corresponding to a given temperature may easily be estimated using Regnault law ... 

Table 6.13 shows the condensate formed by radiation from bare iron and steel pipes in still air and with forced-air circulation. Thus, with a steam pressure of 100 psig and an initial air temperature of... 

Determine the final steam pressure. The final steam temperature (1000°F or 537.8°C) and the final steam volume (2.6150 ft3/lb or 0.16 m3/kg) are known. To determine the final steam pressure, find in the steam tables the state corresponding to the preceding temperature and specific volume. Since a temperature of 1000°F (537.8°C) is higher than any saturation temperature (705.4°F or 374.1°C is the highest saturation temperature for saturated steam), the steam in state 2 must be superheated. Therefore, the superheated-steam tables must be used to determine P2. 

From Table B.7, [T = 400°C, P = 10 bar] falls outside the closed region, showing that water is superheated steam at this temperature and pressure. The table also shows that at this condition,... 

Table 3.5 Reacting mixture compositions and reaction rates at different points along the reactor tube for the case of low steam feed partial pressure (temperature - 900 K, total pressure = 0.605 MPa, S/M = 1.0) (Elnashaie etal 1990)...

From the saturated steam temperature table at 100°C, the equilibrium pressure is 0.101 35 MPa and... 

This table gives values of the melting temperature of ice at various pressures, as calculated from the equation for the ice 1 -liquid water phase boundary recommended by the International Association for the Properties of Steam (lAPS). Temperatures are on the lTS-90 scale. See the Reference for information on forms of ice that exist at higher pressures. The transition points for transformations of the various forms of ice (in each case in equilibrium with liquid water) are ... 

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