Shell & Plate Heat Exchangers Cool Steam Turbine Lube Oil Systems
An auxiliary oil system pump is used to supply oil at the start-up of the steam turbine generator. It supplies the hydraulic oil system required for steam turbine's main inlet steam stop valve, the governing control valves, the bearing and seal oil systems, the relevant hydraulic relays and other mechanisms. At a preset speed of the turbine during start-ups, a pump driven by the turbine main shaft takes over the functions of the auxiliary system.
Tranter Shell & Plate Heat Exchangers can be used to cool the oil in both of these systems. With gasketless, all-welded construction, they are well able to withstand transient pressure spikes at various temperatures.
Extract Stator Winding Heat From High-Purity Media
Large turbogenerators (to 2000 MVA including those found in nuclear generating stations) use a combination of hydrogen and deionized water cooling. The stator winding is cooled by water flowing within stainless steel tubes embedded in the Roebel (stator) bars.
Tranter Shell & Plate Heat Exchangers can be used in isolation circuits to minimize the risk of contaminating the high-purity cooling circuit with cooling media.
S&P Serve In Both HRSG And Condensing Duties In Combined Cycle Power Plants
Tranter Shell & Plate Heat Exchangers can be used as heat recovery steam generators (HRSGs) in combined cycle power plants to use heat from the gas turbine exhaust to generate steam. Live steam temperatures between 420 and 580°C (788°F and 1076°F) are typical. Additionally, shell & plate exchangers can be used as condensers the steam turbine Rankine cycle, with cooling provided by water from a lake, river, sea or cooling towers.