Feedwater is then evaporated, and the pressurized steam ( saturated steam 280☌ 536☏ 6,5 MPa) leaves the steam generator through the steam outlet and continues to the steam turbine. The feedwater (secondary circuit) is heated from ~230☌ 446☏ to the boiling point of that fluid (280☌ 536☏ 6,5MPa). The feedwater ( water 230☌ 446☏ 6,5MPa) is pumped into the steam generator through the feedwater inlet. The primary coolant leaves (water 295☌ 563☏ 16MPa) the steam generator through the primary outlet. The hot primary coolant ( water 330☌ 626☏ 16MPa) is pumped into the steam generator through the primary inlet. Retrieved from Ĭalculate the amount of primary coolant, which is required to evaporate 1 kg of feedwater in a typical steam generator. Thermodynamic Properties of Water, NISTIR 5078. The properties are also tabulated for single-phase states ( compressed water or superheated steam) on a grid of temperatures and pressures extending to 2000 ✬ and 1000 MPa.įurther comprehensive, authoritative data can be found at the NIST Webbook page on thermophysical properties of fluids. In these tables, the basic and key properties, such as pressure, temperature, enthalpy, density, and specific heat, are tabulated along the vapor-liquid saturation curve as a function of both temperature and pressure. Their properties are tabulated in so-called “ Steam Tables”. Water and steam are common media because their properties are very well known. Steam Tables – common parameters in energy systems In almost all thermal power stations (coal, gas, nuclear), water is used as the working fluid (used in a closed-loop between boiler, steam turbine, and condenser), and the coolant (used to exchange the waste heat to a water body or carry it away by evaporation in a cooling tower). Water and steam also react with metals commonly found in industries such as steel and copper, oxidized faster by untreated water and steam. It is especially effective to transport heat through vaporization and condensation of water because of its very large latent heat of vaporization.Ī disadvantage is that water-moderated reactors have to use the high-pressure primary circuit to keep water in the liquid state and achieve sufficient thermodynamic efficiency. It is used due to its availability and high heat capacity, both for cooling and heating. Water and steam are common fluids used for heat exchange in the primary circuit (from the surface of fuel rods to the coolant flow) and in the secondary circuit. They are very useful for engineering calculations. Steam tables contain the basic and key properties of water and steam, such as pressure, temperature, enthalpy, density, and specific heat, which are tabulated along the vapor-liquid saturation curve as a function of both temperature and pressure.
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