Boiler Efficiency - an overview | ScienceDirect Topics

The most common test used for boilers is the flue gas analysis using an Orsat apparatus to determine the percentage by volume the amount of CO 2, CO, O 2, and N 2 in the combustion gas leaving the stack. Based on the flue gas composition and temperature, some adjustments can be made to tune-up the boiler and to determine the best air-to-fuel

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INCREASING THE ENERGY EFFICIENCY OF BOILER AND HEATER

Except for natural gas, practically every fuel leaves a certain amount of deposit on the fireside of the tubes. This is called fouling, and it reduces heat transfer dramatically. Tests show that a soot layer just 0.8 mm (0.03 in.) thick reduces heat transfer by 9.5 percent and a 4.5 mm (0.18 in.) layer by 69 percent!

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LNG carrier - Wikipedia

The gas produced in boil off is traditionally diverted to the boilers and used as a fuel for the vessel. Before this gas is used in the boilers, it must be warmed up to roughly 20 °C by using the gas heaters. The gas is either fed into the boiler by tank pressure or it is increased in pressure by the LD [clarification needed] compressors.

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Natural gas - Wikipedia

Natural gas (also called fossil gas; sometimes just gas) is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. It is formed when layers of decomposing plant and animal matter are exposed to intense heat and

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Economizer - Wikipedia

High pressure boilers typically have larger economizer surfaces than low pressure boilers. Economizer tubes often have projections like fins to increase the heat transfer surface on the combustion gas side. On average over the years, [clarification needed] boiler combustion efficiency has risen from 80% to more than 95%. The efficiency of heat

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LPG / LNG gas carriers for sale

Containment System: GTT Mk III with 0.15% natural boil off rate in laden condition The vessel is designed to perform up to 19.5 knots with a laden consumption of 135 tons per day. At 16 knots the vessel consumes 92 and 87 tons in laden and ballast condition respectively.

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AL 29-4C For Heating and Ventilating

condensing natural gas and propane burning appliances (except for high sulfur fuel sources). and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. concentrated by repeated condensing and evaporation, such as

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Tigerholm | SPX FLOW: Global Industrial Equipment & Global

Tigerholm is an acknowledged leader in heating, ventilation and air conditioning (HVAC) technology with deployments ranging from residential boilers right through to large-scale industrial furnaces. Part of the international network of SPX FLOW brands, Tigerholm focuses on the realization of substantial energy savings through the incredible ingenuity of a highly-experienced engineering team.

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Waste heat recovery - Alfa Laval

waste heat recovery is to try to recover maximum amounts of heat in the plant and to reuse it as much as possible, instead of just releasing it into the air or a nearby river. Figure 1.2 Energy flow without waste heat recovery Figure 1.3 Energy flow with waste heat recovery Fuel Heat generation (boilers, heaters) Process Cooling Surroundings

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Thermosyphon Reboilers - an overview | ScienceDirect Topics

Spouts of gas and liquid, as well as reverse liquid flow, are repeated intermittently. The basic mechanism is the same as that of geysers observed in natural hot springs. In oil refineries and gas and chemical plants, geysering can occur in the exit piping of thermosyphon-side reboilers if the elevation of the reboiler is sufficiently low [115] .

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