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Flue Gas Waste Heat Boiler Thermal Efficiency Calculation
1. q2-flue gas heat loss The exhaust heat loss is the heat loss caused by a part of the heat that is taken away by the smoke of the boiler. Its size is related to the amount of smoke, the smoke exhaust and the reference temperature and the sensible heat of the water vapor in the flue gas. q2 can be used as a simplified calculation formula: q2 = (3.55αpy +0.44) (tpy-t0) / 100 In the formula, αpy - exhaust air excess coefficient
Sep 01, 2010 · Dissipation heat loss is defined as the ratio of heat dissipation from the boiler surface to heat input of the boiler. In this paper, the calculation was limited to boilers proper part, and heat dissipating capacities of all the components were determined indirectly by measuring the surface temperature and ambient temperature.
The losses caused by the sensible heat of flue gases can be calculated as: m& i φ L 3 = m& fuel ⋅ ∑ ⋅ hi (11) i m& fuel where m& fuel is the fuel mass flow [kg/s], m& i the mass flow of a flue gas component, and hi the specific enthalpy of a flue gas component (e.g. CO2) [kJ/kg].
As the increasing heating demand in civil heating area, we design and manufacture the vacuum hot water heating boiler to replace traditional industrial boiler, and to better meet the heating needs. In October, 2014, two sets of 8 ton gas vacuum hot water boilers manufactured by our company were transported to a heating