In-depth discussion on phase-change boilers and dual-phase-change boilers
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Working principle and structural features of gas dual-phase change boilers
A gas two-phase change boiler is a condensing gas phase change boiler that uses a gas phase change boiler as the main unit, with a flue gas condenser serving as an auxiliary component. This type of boiler achieves high thermal efficiency by properly matching the phase changes inside and outside the boiler, thereby efficiently recovering and making use of the sensible and latent heat in the flue gas. Its main components are: gas phase-change boiler + flue gas condenser = gas dual-phase-change boiler
Its basic working principle is as follows: in a condition where there are no non-condensable gases within the boiler, or where the partial pressure (absolute pressure) of such gases is close to zero, the medium inside the boiler transfers the heat it has absorbed continuously to the working fluid inside the heat exchange tubes through a vapor-liquid phase cycle of continuous evaporation and condensation. Meanwhile, the high-temperature flue gas discharged from the flue enters the associated flue gas and steam condenser, where the latent heat of vaporization in the flue gas is released outside the boiler through phase change at normal pressure.
The basic working principle is as follows: when there are no non-condensable gases inside the boiler, or when the partial pressure (absolute pressure) of such gases is close to zero, the fluid inside the boiler undergoes a continuous phase-change cycle of evaporation and condensation, thereby transferring the heat absorbed to the working fluid located within the heat exchange tubes. The high-temperature flue gas exiting the chimney enters a dedicated flue gas condenser, where the heat released by the condensation of water vapor in the flue gas is released at atmospheric pressure outside the boiler. :victory: