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CASE STUDY |
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Waste heat source |
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Engine generator
exhaust |
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Capacity of
Engines |
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1 MW x 1 No. |
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Fuel fired in
Engines |
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Natural Gas |
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Total flue gas
quantity |
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5634 kg./hr |
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Flue gas inlet
temperature |
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429 Deg.C |
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System
configuration |
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Main Thermic Fluid
Heater |
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Flue gas outlet
temperature |
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280 Deg.C |
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Output type |
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Hot Thermic Fluid
at 220 Deg.C |
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Output at 100%
load |
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2,61,900 kcal/hr |
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Product Details |
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Type |
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Pancake coil type,
water tube, once through |
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Installation |
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Horizontal /
Vertical, Indoor as well as outdoor |
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Tube Orientation |
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Horizontal /
Vertical |
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Waste gas flow
direction |
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Horizontal /
Vertical (upwards & downwards) |
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Quality of waste
gases |
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Normally clean
dust free gases |
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Acceptable dust in
waste gases |
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Low dust level
needed in horizontal design high dust level acceptable only
in vertical design with self cleaning velocities. |
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Type of heat
recovery output |
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1) Steam - D & S /
Superheated
2) Hot Water,
3) Hot Thermic
Fluid |
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Media of Waste
Heat |
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Hot gases, Hot
vapours, Hot Liquids |
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Steam pressure |
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Suitable for low
as well as high pressure. |
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Steam condition |
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Dry & saturated
steam with external moisture separator. Superheated steam
possible with provision of superheater and moisture
separater installed between evaporator and superheater. |
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Water side
circulation |
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Once through
forced circulation |
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Steam separation |
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With external
moisture separator |
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Waste heat source
suitability |
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Fuel cell exhaust,
micro / mini gas turbine exhaust, DG set exhaust process
waste gases, Incinerator exhaust, furnace exhaust. |
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Typical
applications |
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Thermic fluid
heating, process heating, hot water generation, superheated
water generation, power generation, cogeneration. |
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Duct firing
possibilities |
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Possible for gas
turbine exhaust applications. |
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Output capacity
possibilities |
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No capacity limits
as multiple units can generate higher outputs. |
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Soot removal |
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Through self
cleaning velocities and pneumatic steam soot blowers. |
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Number of heat
recovery stages possible |
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3 to 4 stages of
heat recovery possible e.g. super-heater, evaporator,
economizer, water preheater. |
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Flow Diagram
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