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Heating Water by Injection of Steam

Water can be heated by injecting steam

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For some applications a direct heating of the water by injecting steam may be convenient. A direct heating system is very simple since it don't require any heat exchangers. Fouling of surfaces, which may be a major problem in certain processes, are avoided.

The required steam flow rate in an steam injection process can be calculated as

m_s = q / (h_g - (t c_p)) (1)

where

m_s = steam flow rate (kg)

q = heat transfer rate (kW)

h_g = specific total enthalpy of the steam before the control valve (kJ/kg)

t = final temperature of the water after the heating (^oC)

c_p = specific heat water (kJ/kg)

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Related Topics

Steam Thermodynamics - Thermodynamics of steam and condensate applications

Related Documents

Design of Steam Heating Systems - An introduction to the basic design of steam heating systems
Heat Emission from Pipes Submerged in Water - Heat emision from steam or water heating pipes submerged in water - assisted (forced) or natural circulation
Properties of Saturated Steam - Imperial Units - Steam table with sensible, latent and total heat, and specific volume at different gauge pressures and temperatures
Properties of Saturated Steam - Pressure in Bar - Saturated Steam Table with properties like boiling point, specific volume, density, specific enthalpy, specific heat and latent heat of vaporization
Steam and Vapor Enthalpy - Introduction and definition of vapor and steam enthalpy - specific enthalpy of saturated liquid, saturated vapor and superheated vapor
Steam Condensation and Heat Transfer - Heat transfer when condensing steam
Steam Heating Process - Load Calculating - Calculating the amount of steam in non-flow batch and continuous flow heating processes
Water - Thermophysical Properties - Thermal properties of water - density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more

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