Description, Output and Development Prospects of a 750 exp 0 C Helium Direct Cycle Nuclear Power Plant with a Single Turbomachinery and Intermediate Cooling

摘要

The concept of a helium cycle nuclear power plant with a single turbomachinery located outside the P.C.R.V. (prestressed concrete reactor vessel) in a leaktight basement is being studied. Main features of the system are pointed out, as are the favourable aspects it offers for a satisfactory design of the plant, a high safety level, a good efficiency for electricity generation associated with a dry cooling tower and heat recovery in good conditions for heating or industrial purposes. Above all, the high technological credibility due to the temperature of 750 exp 0 C is worth being emphasized. A 750 exp 0 C/800 MW(e) power plant (2000 MW(t)) with one intercooling is presented as an example of a possible first generation of gas turbine HTGR. Development prospects for higher power levels, 1000/1200 MWe, are also investigated, at first with one but also with two intermediate coolings, taking into consideration the somewhat higher helium temperature. The net plant efficiencies, for electricity generation only, range from 40 to 45%. (Atomindex citation 09:411878)