GAS TURBINE POWERPLANTS

• US 3,583,156 A
• Filed: 04/16/1969
• Issued: 06/08/1971
• Est. Priority Date: 04/24/1968
• Status: Expired due to Term

• Current Assignee: Schabert Hans-Peter
• Original Assignee: Schabert Hans-Peter
• Inventors: SCHABERT HANS-PETER
• Application Number:
  US04/816,520
• Time in Patent Office: 783 Days
• US Class Current: 376/391
• CPC Class Codes: F02C 1/10 Closed cycles
• CPC Class Codes: G21D 5/08 with engine working medium heated in a heat exchanger by the reactor coolant
• CPC Class Codes: Y02E 30/00 Energy generation of nuclear origin
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft

Abstract

A gas turbine powerplant for operation with heat from nuclear or fossil fuel comprises a circulatory system which contains the gaseous working medium for a turbine and has a recuperative heat exchanger in series with the turbine and the heat supply. The system has a plurality of compressors of which two form respective paths for parallel flows of medium and are connected to respectively different temperature stages of the recuperative heat exchanger at the high-pressure side thereof. The compressors are connected through cooling means with the heat supply within the circulatory system. The median specific heat of the gaseous medium at the high-pressure side of the recuperative heat exchanger is more than 5 percent higher than at the low-pressure side, and the suction pressure of at least one of the two compressors at full load is above the critical pressure.

Claims

1. A gas turbine powerplant for operation with heat from nuclear or fossil fuel, comprising a circulatory system containing gaseous working medium and having heat source means for heating said medium and at least one turbine connected to said source means, a recuperative heat exchanger interposed in said system serially with said turbine and said source means, a plurality of compressors, two of said compressors forming paths for respective partial flows of the total flow of medium and being connected to respectively different temperature stages oF said recuperative heat exchanger at the high-pressure side thereof, cooling means connected in said system behind said turbine and ahead of said source means, the median specific heat of said medium at the high-pressure side of said recuperative heat exchanger being more than 5 percent than at the lower-pressure side, and the suction pressure of at least one of said two compressors at full load being above the critical pressure magnitude.

2. In a powerplant according to claim 1, said system having at the inlet of each of said two compressors a gaseous medium density of at least 100 kg./m.2.

3. In a powerplant according to claim 1, each of said two compressors having its own drive turbine connected to said source means for operation by said gaseous medium heated by said source means.

4. In a powerplant according to claim 1, said two compressors having substantially the same suction pressure above said critical magnitude.

5. In a powerplant according to claim 1, one of said two compressors having in said system a gas induction point ahead of one of said cooling means, and said other compressor having its induction point arrear of said other cooling means.

6. A powerplant according to claim 1, wherein said gaseous working medium is carbon dioxide.

7. In a powerplant according to claim 1, said heat source means comprising a heat exchanger secondarily connected in said system, and a nuclear reactor with which said latter exchanger is primarily connected to receive heat generated in said reactor.

8. In a powerplant according to claim 1, said heat source means comprising a nuclear reactor, said gaseous working medium constituting a coolant for directly cooling said reactor.

9. A powerplant according to claim 8, comprising at least two turbines for useful mechanical power generation, said two turbines being connected in said system ahead and arrear respectively of said reactor.

10. In a powerplant according to claim 1, said heat source means comprising a fossil fuel boiler plant having combustion air preheater means connected to said system for preheating the air at least partially by residual heat of said circulatory system for the gaseous working medium.

11. In a powerplant according to claim 1, one of said two compressors being the main compressor and the other an auxiliary compressor of the system, said main compressor having a larger throughput of gaseous medium than said auxiliary compressor, and regulating means for partial load operation of the plant, said regulating means being in connection with said auxiliary compressor.

12. In a powerplant according to claim 11, said regulating means being also connected to said main compressor for response to its induction temperature.