Transcription of 3. STEAM SYSTEM
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3. STEAM SYSTEM
3. STEAM SYSTEM55 Bureau of Energy EfficiencySyllabusSteam SYSTEM : Properties of STEAM , Assessment of STEAM distribution losses, STEAM leak-ages, STEAM trapping, Condensate and flash STEAM recovery SYSTEM , Identifying opportu-nities for energy IntroductionSteam has been a popular mode of conveying energy since the industrial revolution. STEAM isused for generating power and also used in process industries such as sugar, paper, fertilizer,refineries, petrochemicals, chemical, food, synthetic fibre and textiles The following character-istics of STEAM make it so popular and useful to the industry: Highest specific heat and latent heat Highest heat transfer coefficient Easy to control and distribute Cheap and Properties of SteamWater can exist in the form of solid, liquid and gas as ice, water and STEAM respectively. If heatenergy is added to water, its temperature rises until a value is reached at which the water can nolonger exist as a liquid.
Apart from proper sizing of pipe lines, provision must be made for proper draining of condensate which is bound to form as steam travels along the pipe. For example, a 100 mm well lagged pipe of 30-meter length carrying steam at 7 kg/cm2 pressure can condense nearly 10 kg. of water in the pipe in one hour unless it is removed from
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