Properties of Saturated Steam - SI Units - UNAM

1 Search Web The engineering toolbox Resources, Tools and Basic Information for engineering and Design of Technical Applications! Properties of Saturated Steam - SI Units A Saturated Steam Table with Steam Properties as specific volume, density, specific enthalpy and specific entropy Sponsored Links The Steam table below list the Properties of Steam at varying pressures and temperatures: Specific Enthalpy of Absolute pressure (kN/m2) Temperature (oC) SpecificVolume(m3/kg) Density- - (kg/m3) Liquid- hl - (kJ/kg)Evaporation - he - (kJ/kg) Steam - hs - (kJ/kg)Specific Entropy of Steam - s - (kJ/kgK) 160 2493 2509 2460 2534 2424 2562 2393 2585 2358 2610 28 2340 2623 35 2327 2632 45 2312 2642 55 2299 2650 65 2288 2657 75 2279 2663 85 2270 2668 95 2262 2673 100 2258 2675 2257 2676 110 2251 2680 130 2238 2687 150 2226 2698 170 2216 2699 190 2206 2704 220 2193 2711 260 2177 2718 280 2170 2722 320 2157 2728 360 2144 2733 400 2133 2738 440 2122 2742 480 2112 2746 500 2107 2748 550 2096 2752 600 2085 2756 650 2075 2759 700 2065 2762 750 2056 2765 800 2047 2768 850 2038 2770 900 2030 2772 950 2021 2774 1000 2014 2776 1050 772 2006 2778 1150 790 1991 2781 1250 807

2 1977 2784 1300 815 1971 2785 1500 845 1945 2790 1600 859 1933 2792 1800 885 1910 2795 2000 909 1889 2797 2100 920 1878 2798 2300 942 1858 2800 2400 952 1849 2800 2600 972 1830 2801 2700 981 1821 2802 2900 1000 1803 2802 3000 1008 1794 2802 3200 1025 1779 2802 3400 1042 1760 2802 3600 1058 1744 2802 3800 1073 1728 2801 4000 1087 1713 2800 Absolute Pressure = Gauge Pressure + Atmospheric pressure. Specific enthalpy or Sensible Heat is the quantity of heat in 1 kg of water according to the selected temperature. Example - Boiling Water at 100oC and 0 bar At atmospheric pressure - 0 bar gauge or absolute kN/m2 - water boils at 100oC. 419 kJ of energy is required to heat 1 kg of water from 0oC to the saturation temperature 100 C. Therefore, at 0 bar gauge (absolute kN/m2) and 100oC - the specific enthalpy of water is 419 kJ/kg. Another 2,257 kJ of energy is required to evaporate the 1 kg of water at 100oC to Steam at 100oC.

3 Therefore, at 0 bar gauge (absolute kN/m2) - the specific enthalpy of evaporation is 2,257 kJ/kg. The total specific enthalpy of the Steam at atmospheric pressure and 100oC can be summarized as: hs = 419 + 2,257 = 2,676 kJ/kg Example - Boiling Water at 170oC and 7 bar Steam at atmospheric pressure is of limited practical use. It cannot be conveyed by its own pressure along a Steam pipe to the points of consumption. At 7 bar gauge (absolute 800 kN/m2) - the saturation temperature of water is 170oC. More heat energy is required to raise the temperature to the saturation point at 7 bar gauge than needed for water at atmospheric pressure. From the table a value of kJ is needed to raise 1 kg of water from 0oC to the saturation temperature 170oC. The heat energy (enthalpy of evaporation) needed at 7 bar gauge to evaporate the water to Steam is actually less than the heat energy required at atmospheric pressure. The specific enthalpy of evaporation decrease with Steam pressure increase.

4 The evaporation heat is 2,047 kJ/kg according the table. Note! Because the specific volume of Steam decreases with increasing pressure, the amount of heat energy transferred in the same volume actually increases with Steam pressure. In other words the same pipe may transfer more energy with high pressure Steam than with low pressure Steam . Sponsored Links Related Topics Flash Steam Flash Steam generation; fundamentals, energy recovery from flash Steam .. Thermodynamics Steam and condensate Properties , fundamental thermodynamics .. Steam and Condensate Steam & condensate Properties , capacities, pipe sizing and systems configuration. Steam is an essential part of modern industrial process technology. Without Steam , food, textile, chemical, medical, power, heating and transport industries could not perform as they do. In this section you will find tools and information regarding Steam and condensate applications. Related Documents Entropy of Superheated Steam A table with the entropy of Steam superheated to temperatures above the boiling point with corresponding temperatures Sizing Steam Pipes (kg/h) Steam is a compressible gas where the mass flow capacity of the pipe lines depends on the Steam pressure.

5 This table, where pressure is in bar, velocity in m/s and capacity in kg/h, is suitable for sizing Steam pipes Steam Trap Selection Guide A Steam trap selection guide - Float & Thermostatic, Inverted Bucket, Bimetal Thermostatic, Impulse and Thermodynamic Disc Steam traps Steam Consumption of some Typical Consumers Steam consumption rates for typical consumers in different industries as bakeries, breweries, paper factories etc. Arithmetic and Logarithmic Mean Temperature Difference Arithmetic Mean Temperature Difference - AMTD - and Logarithmic Mean Temperature Difference - LMTD - definition formulas with examples - Online Mean Temperature Calculator Properties of Saturated Steam - Pressure in Bar The Saturated Steam Table with Properties as boiling point, specific volume, density, specific enthalpy, specific heat and latent heat of vaporization Vapor and Steam An introduction to vapor and Steam Water - Specific Heat Capacity at High Temperature Specific heat capacity of water at higher temperatures - in Imperial Units Water - Specific Volume and Weight Density Specific volume and weight density of water at temperatures ranging from 32 to 700 deg F, in Imperial Units Water - Saturation Pressure and Specific Weight Vapor pressure and specific weight for water at temperatures from 32 to 212 deg F - in Imperial Units Compressed Water Properties Specific volume.

6 Enthalpy and entropy of compressed water Enthalpy of Wet Steam Wet Steam , dryness fraction and enthalpy Specific Volume of Wet Steam Wet Steam an specific volume Stress in a Steam Boiler Shell from Boiler Pressure Calculate the stress in in a Steam boiler shell from pressure Steam Pipe Pressure drop Calculator Calculate pressure drop in Steam distribution pipe lines Sponsored Links toolbox ShortList Difficult to find your favorite toolbox page? Add a link to the page in your own personal Shortlist! Add a link to This page Here! Add this Page! Delete the ShortList! Search the toolbox Search Web The engineering toolbox Translate the toolbox Translate this page to Spanish French German Italian Dutch Norwegian About Us We appreciate any comments and tips on how to make The engineering toolbox a better information source. Please contact us by email if You find any faults, inaccurate, or otherwise unacceptable information. The content in The engineering toolbox is copyrighted but can be used with NO WARRANTY or LIABILITY.

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