Abstract: A tube bundle for a steam condenser in which the projection on a plane perpendicular to the axis of the tubes of the envelope of the tube-containing zones of the bundle forms a trace of the type forming radiating spikes, wherein at least some of the spikes split at least once into branches, and wherein said spikes radiate from a tube-containing area that forms a substantially circular ring.

Abstract: A deaerator for deaerating the feed water to a steam generator, the deaerator comprising a single enclosure (1) including a deaerating device, said enclosure being divided into two longitudinal zones (A, B) with a first one of said zones (A) corresponding to the location of said deaerating device, said first zone (A) having a cross-section which is larger in area than the cross-section of the other or second one of said zones (B), the center of gravity (G1) of said cross-section of said first zone being higher than the center of gravity (G2) of the cross-seciton of said second zone, the top portion of said first zone being provided with escape orifices (15) for the incondensable, nozzles (17) for spraying the water to be deaerated and reheated, and a reheating steam inlet (14) leading to a steam distribution chest (16) for distributing steam into longitudinal passages (28, 29) situated in an elongatge box (24) suspended from the walls of said first zone (A) of the enclosure, said box (24) being fed in a centr

Abstract: Apparatus for degassing a liquid fluid, the apparatus being installed inside an envelope (1) which contains a supply (20) of said degassed fluid in the liquid state in the bottom thereof and in equilibrium with its saturated vapor, the apparatus comprising perforated trays (2, 3, 4) situated above the level of the supply and fed with liquid fluid to be degassed, said trays dispersing the liquid and feeding a tank (7) which includes at least one pipe (8) extending therealong in the vicinity of one of its walls (12) and supplied with vapor of said fluid at a pressure P1 which is greater than the pressure P within said envelope, said pipe including a perforated zone (14) running along its entire length inside the tank and on its side adjacent to said wall, said perforated zone serving to fill the bottom portion of the pipe cross-section with liquid from the tank allowing the vapor to escape from said pipe, the apparatus including the improvement whereby said tank is closed (18) betweeen said wall and said pipe,

Abstract: A modular bundle of tubes for a steam condenser comprises two perforated plates (24, 25), a series of tubes (22) interconnecting the perforated plates, and a set of intermediate supporting plates (23) distributed between the two perforated plates. The improvement wherein both perforated plates are the same size, each being surrounded by a reinforcing frame (24, 25) which is thicker than the perforated plate, and wherein drawbars (26) fitted with length-adjusting means (27) interconnect the perforated plates, said drawbars being fixed to said frames and being distributed along the said frames.

Abstract: A heater unit for heating water which is supplied to a steam-generating boiler of an electric energy production installation which includes an alternator driven by a turbine having at least one low-pressure body (9) connected by a housing (15), to a steam condenser situated under said low-pressure body, said heater unit comprising a nest of tubes located inside said housing and being supplied with water coming from an extraction circuit for the condenser (14) and the outer surface of the tubes being supplied with steam drawn off from the low-pressure body, the nest of tubes being substantially horizontal and perpendicular to the axis (10) of the turbine, the cross-section of the nest (1) of tubes of said heater unit being narrow and elongate and the length of said cross-section being disposed substantially vertically, the nest of tubes being enclosed in a casing (16) which both channels the steam around the nest of tubes and receives the steam bleed-off pipes (15), wherein the cross-section (7) of said casing