Xem 1-20 trên 23 kết quả Steam boilers
  • The American Society of Mechanical Engineers set up a committee in 1911 for the purpose of formulating standard rules for the construction of steam boilers and other pressure vessels. This committee is now called the Boiler and Pressure Vessel Committee.

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  • Refinery Process Air Emissions The most significant air emission sources in oil refineries are catalytic or thermal cracking units, catalytic reformer units, sulfur recovery plants, storage vessels, fluid coking units wastewater streams, cooling towers, equipment leaks, blowdown systems, vacuum distillation units, steam boilers, process furnaces, process heaters, compressor engines, barge or ship loading and gasoline loading racks specifically located at petroleum refineries.

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  • The author gratefully acknowledges the U.S. Department of Energy, Office of Industrial Technology, Steam System BestPractices Program for sponsoring the development of this guide. Special thanks are extended to Fred Hart and Bob Gemmer of DOE for their support and guidance.

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  • Steam - The Energy Fluid It is useful to introduce the topic of steam by considering its many uses and benefits, before entering an overview of the steam plant or any technical explanations. Steam has come a long way from its traditional associations with locomotives and the Industrial Revolution. Steam today is an integral and essential part of modern technology. Without it, our food, textile, chemical, medical, power, heating and transport industries could not exist or perform as they do.

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  • This section provides requirements for all methods of construction of power, electric, and miniature boilers; high temperature water boilers, heat recovery steam generators, and certain fired pressure vessels to be used in stationary service;...

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  • This Section provides requirements for design, fabrication, installation and inspection of steam heating, hot water heating, hot water supply boilers, and potable water heaters intended for low pressure service that are directly fired by oil,...

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  • Spirax Sarco is the recognized industry standard for knowledge and products and for over 85 years has been committed to servicing the steam users worldwide. The existing and potential applications for steam, water and air are virtually unlimited. Beginning with steam generation, through distribution and utilization and ultimately returning condensate to the boiler, Spirax Sarco has the solutions to optimize steam system performance and increase productivity to save valuable time and money.

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  • Spirax Sarco recirculating feedwater spray systems type RFS are designed to provide additional flash steam condensing capacity on boiler feedtank applications. When the condensate return flowrate is high and the cold make-up flowrate is intermittent it is likely that valuable flash steam will be lost through the vent. To ensure that this flash steam is condensed it is often worthwhile to take feedwater from a relatively cool part of the feedtank and pump it to a spray nozzle.

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  • Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 4 STEAM GENERATION EQUIPMENT AND AUXILIARIES Determining Equipment Loading for Generating Steam Efficiently 4.2 Steam Conditions with Two Boilers Supplying the Same Line 4.6 Generating Saturated Steam by Desuperheating Superheated Steam 4.7 Determining Furnace-Wall Heat Loss 4.8 Converting Power-Generation Pollutants from Mass to Volumetric Units 4.10 Steam Boiler Heat Balance Determination 4.11 Steam Boiler, Economizer, and AirHeater Efficiency 4.14 Fire-Tube Boiler Analysis and Selection 4.

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  • Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 3 COMBUSTION Combustion Calculations Using the Million BTU (1.055 MJ) Method 3.1 Savings Produced by Preheating Combustion Air 3.4 Combustion of Coal Fuel in a Furnace 3.5 Percent Excess Air While Burning Coke 3.8 Combustion of Fuel Oil in a Furnace 3.9 Combustion of Natural Gas in a Furnace 3.11 Combustion of Wood Fuel in a Furnace 3.17 Molal Method of Combustion Analysis 3.19 Final Combustion Products Temperature Estimate 3.22 COMBUSTION CALCULATIONS USING THE MILLION BTU (1.

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  • Revised to cover the latest innovations and trends, the newest edition of this classic work provides detailed coverage of every component of effective energy management. It includes expert information on, boilers, steam systems, cogeneration, waste-heat recovery, HVAC systems, control systems, systems maintenance, industrial insulation, indoor air quality, thermal energy storage, and codes and standards.

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  • The purpose of this manual is to provide the reader with a fundamental understanding of controls and how they are applied to the many parts of heating, ventilating, and air conditioning systems in commercial buildings. Many aspects of control are presented including air handling units, terminal units, chillers, boilers, building airflow, water and steam distribution systems, smoke management, and indoor air quality.

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  • Combustion units (process furnaces, steam boilers and gas turbines) give rise to emissions of carbon dioxide, nitrogen oxides, sulphur dioxide and particulates. Nitrogen oxide emissions are most commonly reduced by combustion modifications that reduce temperatures and hence the formation of thermal NOx. The techniques include low NOx burners, flue gas recirculation, and reduced pre-heat. Nitrogen oxides can also be removed after they have formed by reduction to nitrogen using Selective Non Catalytic Reduction (SNCR) or Selective Catalytic Reduction (SCR). Water pollutant control.

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  • Source: HANDBOOK OF MECHANICAL ENGINEERING CALCULATIONS SECTION 11 HEAT TRANSFER AND HEAT EXCHANGE Selecting Type of Heat Exchanger for a Specific Application 11.1 Shell-and-Tube Heat Exchanger Size 11.4 Boiler-Tube Steam-Generating Capacity 11.20 Heat Exchanger Actual Temperature Difference 11.6 Fouling Factors in Heat-Exchanger Sizing and Selection 11.8 Heat Transfer in Barometric and Jet Condensers 11.10 Selection of a Finned-Tube Heat Exchanger 11.12 Spiral-Type Heating-Coil Selection 11.15 Shell-and-Tube Heat Exchanger Design Analysis 11.

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  • HEAT TRANSFER AND HEAT EXCHANGE Selecting Type of Heat Exchanger for a Specific Application 11.1 Shell-and-Tube Heat Exchanger Size Boiler-Tube Steam-Generating Capacity Heat Exchanger Actual Temperature Difference 11.6 Fouling Factors in Heat-Exchanger Sizing and Selection 11.8 Heat Transfer in Barometric and Jet Condensers 11.10 Selection of a Finned-Tube Heat Exchanger 11.12 Spiral-Type Heating-Coil Selection

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  • STEAM GENERATION EQUIPMENT AND AUXILIARIES Determining Equipment Loading for Generating Steam Efficiently 4.2 Steam Conditions with Two Boilers Supplying the Same Line 4.6 Generating Saturated Steam by Desuperheating Superheated Steam

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  • The purpose of this manual is to provide the reader with a fundamental understanding of controls and how they are applied to the many parts of heating, ventilating, and air conditioning systems in commercial buildings. Many aspects of control are presented including air handling units, terminal units, chillers, boilers, building airflow, water and steam distribution systems, smoke management, and indoor air quality. Control fundamentals, theory, and types of controls provide background for application of controls to heating, ventilating, and air conditioning systems. ...

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  • carbon dioxide recovery systems In the fermentation process, the yeast feeds on the wort to produce carbon dioxide and alcohol. This carbon dioxide can be recovered with closed fermentation tanks and used later in the carbonation process. The fermentation process generates about 8-10 lbs/barrel wort (3-4 kg CO2/hl) (Lom and Associates, 1998). Typical CO2 scrubber operations require 2 kg of water per kg of carbon dioxide (Dell, 2001). A large brewery can become self-sufficient for CO2 if a well-designed plant is installed to recover CO2 from fermentation. The U.S.

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  • DESTRUCTOR (continued from volume 8 slice 2 page 108.) ... in main flues, &c. (g) The chimney draught must be assisted with forced draught from fans or steam jet to a pressure of 1½ in. to 2 in. under grates by water-gauge. (h) Where a destructor is required to work without risk of nuisance to the neighbouring inhabitants, its efficiency as a refuse destructor plant must be primarily kept in view in designing the works, steam-raising being regarded as a secondary consideration. Boilers should not be placed immediately over a furnace so as to present a large cooling surface,...

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  • A supplementary-fired HRSG is basically a convective unit with a design quite similar to an unfired HRSG. However the firing capability provides the ability to control the HRSG steam production—within the capability of the burner system— independent of the normal gas turbine operating mode. Fully-Fired HRSG. A few industrials have used the exhaust of the gas turbine as preheated combustion air for a fully-fired HRSG. A fully fired HRSG is defined as a unit having the same amount of oxygen in its stack gases as an ambient-air-fired power boiler.

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