Abstract
A ceiling-condensing heat exchanger made of glass tube, which can avoid corrosion caused by dissolved condensed acids, is installed after the Heat Recovery Steam Generator of S1A-02DFC gas turbine power plant in our laboratory. Sensible and latent heat of the injected steam are recovered. At the same time, water is recovered through condensing of the vapor contained within the exhaust. The recovered heat can be used for preheating of feed water, so better the performances of DFC gas turbine power plant. Chemical analyses of the condensed water indicates that it is softer than most water sources, contains only a small amount of combustion products, after simply treating, it can be reused for steam injection. In addition, sulphur and nitrogen oxides in the exhaust gas condensed and dissolved into the condensed water, so the emission of these substances is reduced further, which means that it is more favorable for environment. Some theoretical analyses of the heat exchanger and experimental results are represented.
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