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