DRY COOLING SYSTEM FOR POWERPLANTS

摘要

An indirect dry cooling system suitable for steam condensing applications in a power plant Rankine cycle includes an air blast chiller having a plurality of interconnected modular cooler cells. Each cell comprises a blower and tube bundle including inlet headers, outlet headers, and plurality of tubes extending between the headers. In one embodiment, the tube bundles form an A-frame cell construction being structurally self-supporting from a base. Each of the tubes may be finned. Cooling water circulating in a closed flow loop on the tube side between the air blast chiller and turbine steam condenser is cooled by ambient air blown through the tube bundles. The cooled water flows through a second tube bundle in the condenser which condenses steam. The heated cooling water returns through the air blast chiller to complete the cooling water cycle.

主权项

1. A dry cooling system for condensing steam, the system comprising:
a condenser arranged to receive exhaust steam from a steam turbine; a condenser tube bundle disposed in the condenser; an air blast chiller fluidly coupled to the condenser tube bundle via a cooling water closed flow loop for circulating cooling water; the air blast chiller comprising a plurality of fluidly interconnected cooling cells each comprising:
a pair of first and second inlet bundle section headers fluidly coupled to the closed flow loop;a pair of first and second outlet bundle sections headers fluidly coupled to the closed flow loop;a first tube bundle comprising a plurality of tubes fluidly coupled between the first inlet and outlet bundle section headers;a second tube bundle angularly oriented to the first tube bundle and comprising a plurality of tubes fluidly coupled between the second inlet and outlet bundle section headers; andan air blower arranged to direct ambient cooling air through the first and second tube bundles; wherein hot cooling water from the condenser tube bundle flows through the closed flow loop to each of the first and second inlet bundle section headers, through the first and second tube bundles wherein the cooling water is cooled, the cooled cooling water being collected in the first and second outlet bundle section headers and then flowing through the closed flow loop back to the condenser tube bundle.