characteristics of high pressure boiler
HOT
Capacity:1-20t/h
Rated thermal efficiency: 100-104%
Fixed working pressure: ≤1.6MPa
Applicable fuel:natural gas etc.
HOT
Capacity:0.7-14MW
Rated thermal efficiency:96-98%
Fixed working pressure:≤1.25MPa
Applicable fuel:Natural gas, light oil, etc.
HOT
Capacity:0.7-2.8Mw
Rated thermal efficiency: 97.2-106%
Fixed working pressure:0.1MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:2.8-7.0Mw
Rated thermal efficiency:≥105.5%
Fixed working pressure:-0.02MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:99Kw
Rated thermal efficiency:97.2-104.4%
Fixed working pressure:1.0MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:0.5-4.0 t/h
Rated thermal efficiency:98%
Fixed working pressure:≤1.25MPa
Applicable fuel:electric energy
In watertube boilers, boiler water passes through the tubes while the exhaust gases remain in the shell side, passing over the tube surfaces. Because tubes can typically withstand higher internal pressure than the large chamber shell in a firetube, watertube boilers are used where high steam pressures (3,000 psi, sometimes higher) are required.Get Price
The ASME Boiler & Pressure Vessel Code (BPVC) is an American Society of Mechanical Engineers (ASME) standard that regulates the design and construction of boilers and pressure vessels. The document is written and maintained by volunteers chosen for their technical expertise . The ASME works as an accreditation body and entitles independent third parties …Get Price
The treatment and conditioning of boiler feed water must satisfy three main objectives:. Continuous heat exchange; Corrosion protection; Production of high quality steam; External treatment is the reduction or removal of impurities from water outside the boiler. In general, external treatment is used when the amount of one or more of the feed water impurities is too …Get Price
A low-pressure fire-tube boiler can usually tolerate high feed-water hardness with proper treatment while virtually all impurities must be removed from water used in some modern, high-pressure boilers. Only relatively wide ranges can be given as to maximum levels of alkalis, salt, silica, phosphates etc, in relation to working pressure.Get Price
A low-pressure fire-tube boiler can usually tolerate high feed-water hardness with proper treatment while virtually all impurities must be removed from water used in some modern, high-pressure boilers. Only relatively wide ranges can be given as to maximum levels of alkalis, salt, silica, phosphates etc, in relation to working pressure.Get Price
In a simplified example (which assumes a constant boiler pressure and constant friction loss in the pipework), a boiler is rated to produce 10 tonnes of steam per hour. The boiler feedpump performance characteristic is tabulated in Table 6.5.2, along with the resulting differential pressure (ΔP) across the feedwater valve at various flowrates Get Price
Characteristics of a High Pressure Boiler Power of Steam: Water expands 1600 times to form steam, which can carry large amounts of heat. This makes water an economical and ideal raw material for generating heat and power. High pressure boilers heat water to create steam at over 15 psi and have water pressure over 160 psig.Get Price
pressure of the boiler. 2-3: Const P heat addition Saturated water enters the boiler and leaves it as superheated vapor at state 3 3-4: Isentropic expansion Superheated va por expands isentropically in turbine and produces work. 4-1: Const P heat rejection High quality steam is condensed in the condenser 4 3 1 2 s T 1 2 4 3 sGet Price
A boiler or steam generator is a device used to create steam by applying heat energy to water.Although the definitions are somewhat flexible, it can be said that older steam generators were commonly termed boilers and worked at low to medium pressure (7–2,000 kPa or 1–290 psi) but, at pressures above this, it is more usual to speak of a steam generator.Get Price
Good engineering judgment must be used in all cases. Because each specific boiler system is different, control limits may be different as well. There are many mechanical factors that can affect the blowdown control limits, including boiler design, rating, water level, load characteristics, and type of fuel.Get Price
Blowdown in Boiler Definition. Blowdown in Boiler, Usually, water which is fed to the boiler contains high Total Dissolved Solids (TDS) content as well as other dissolved and undissolved solids in it. On heating water or converting water to steam, these dissolved solids do not evaporate and gets separated from water or steam and settled at the bottom of the shell.Get Price
the characteristics of the boiler feed water and boiler drum water should also be main- tained as stringent as for high pressure boilers operated at 59 MN/m* pressure and above, since recovery boilers cannot tolerate even a minor tube leak while in operationGet Price
Two types of gas burner are in use 'Low pressure' and 'High pressure'. Low pressure burner. These operate at low pressure, usually between 2.5 and 10 mbar. The burner is a simple venturi device with gas introduced in the throat area, and combustion air being drawn in from around the outside. Output is limited to approximately 1 MW.Get Price
The treatment and conditioning of boiler feed water must satisfy three main objectives:. Continuous heat exchange; Corrosion protection; Production of high quality steam; External treatment is the reduction or removal of impurities from water outside the boiler. In general, external treatment is used when the amount of one or more of the feed water impurities is too …Get Price
High strength steel Structural and general use steel Boiler and pressure vessel steel Machine building steel Steel for large diameter pipes, offshore structures and energy applications Shipbuilding plate Steel grade 16MnCr5 characteristics.Get Price
Characteristics of a High Pressure Boiler Power of Steam: Water expands 1600 times to form steam, which can carry large amounts of heat. This makes water an economical and ideal raw material for generating heat and power. High pressure boilers heat water to create steam at over 15 psi and have water pressure over 160 psig.Get Price
the characteristics of the boiler feed water and boiler drum water should also be main- tained as stringent as for high pressure boilers operated at 59 MN/m* pressure and above, since recovery boilers cannot tolerate even a minor tube leak while in operationGet Price
Good engineering judgment must be used in all cases. Because each specific boiler system is different, control limits may be different as well. There are many mechanical factors that can affect the blowdown control limits, including boiler design, rating, water level, load characteristics, and type of fuel.Get Price
High strength steel Structural and general use steel Boiler and pressure vessel steel Machine building steel Steel for large diameter pipes, offshore structures and energy applications Shipbuilding plate Steel grade ASTM A36 characteristics .Get Price
May 22, 2019 · If the steam is expanded only in a single stage from the boiler pressure to the exhaust pressure, its velocity must be extremely high. A compounded steam turbine has multiple stages i.e. it has more than one set of nozzles and blades, in series, keyed to the shaft or fixed to the casing, so that either the steam pressure or the jet velocity is Get Price
high pressure steam produced by . a boiler or heat recovery steam generator (HRSG). Unlike gas turbines or microturbines, steam turbines do not directly consume fuel. Rather, the fuel driving the process is the fired boiler or plant equipment that produces heat for the HRSG (e.g., a gas turbine). Table 1. Summary of Steam Turbine Attributes for CHPGet Price
great deal as the boiler pressure increase The boiling point (b.p.) increases as the pressure increases Thus the sensible heat increases as the pressure increases, and the latent heat decreases Boiler pressures are expressed in psia, psig, bar, kg/cm2, kpa SteamGet Price
Maintenance of proper pH throughout the boiler feedwater, boiler, and condensate systems is essential for corrosion control. Most low-pressure boiler system operators monitor boiler water alkalinity because it correlates very closely with pH, while most feedwater, condensate, and high-pressure boiler water requires direct monitoring of pH.Get Price
There are several factors that influence the energy performance of boilers including fuel characteristics, firing method, steam pressure, and heating capacity. The main challenge to ensure optimal operating conditions for boilers is to …Get Price
The flow rates are about twice as high as those of a comparable boiler feed pump in a fossil-fuelled power station. Casing For boiler feed pumps two factors have to be considered regarding the wall thickness of the casing: the pressure loads and the different temperature conditions it needs to withstand.Get Price
May 22, 2019 · If the steam is expanded only in a single stage from the boiler pressure to the exhaust pressure, its velocity must be extremely high. A compounded steam turbine has multiple stages i.e. it has more than one set of nozzles and blades, in series, keyed to the shaft or fixed to the casing, so that either the steam pressure or the jet velocity is Get Price
A boiler or steam generator is a device used to create steam by applying heat energy to water.Although the definitions are somewhat flexible, it can be said that older steam generators were commonly termed boilers and worked at low to medium pressure (7–2,000 kPa or 1–290 psi) but, at pressures above this, it is more usual to speak of a steam generator.Get Price
In a simplified example (which assumes a constant boiler pressure and constant friction loss in the pipework), a boiler is rated to produce 10 tonnes of steam per hour. The boiler feedpump performance characteristic is tabulated in Table 6.5.2, along with the resulting differential pressure (ΔP) across the feedwater valve at various flowrates Get Price
great deal as the boiler pressure increase The boiling point (b.p.) increases as the pressure increases Thus the sensible heat increases as the pressure increases, and the latent heat decreases Boiler pressures are expressed in psia, psig, bar, kg/cm2, kpa SteamGet Price
STEP 3: SELECT THE BOILER The size of the replacement boiler will be based on the Total Heat Loss of the building calculated in Step 2. The boiler should be selected based on its AHRI NET Rating in BTU/Hr. For example, if the Total Heat Loss of the house is 85,000 BTU/ Hr. then the AHRI NET Rating of the replacement boiler must be at least 85,000.Get Price
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