# US 4,394,815 A · Process for generating electric power by means of turbogenerators using high pressure vapor

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- Number: US 4,394,815 A
- Document ID: US4394815A
- Status: Granted
- Kind: A
- Application number: 06/224,571
- Filed: 1980-11-06
- Granted: 1983-07-26
- Earliest claimed: 1979-03-08
- Inventors: Otto F. Domdey
- Web page: https://patentgrep.com/patent/US4394815A

## CPC

- F01K 21/005: {using mixtures of liquid and steam or evaporation of a liquid by expansion}
- F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D)

## Abstract

A hydraulic turbo-generator driven by a water current is used for producing electric power; the water is driven by a high output rotary pump (3) and supplied to the turbine (5) by means of a cylindrical conduit (4). The high pressure vapor is produced in a vapor generator (2) and injected in the water current, so that the expansion energy of the vapor is transmitted to the water, if possible completely, and to the turbine. The interaction duration of the vapor and the water is considered to be a very short due to the high speed of the water, so that substantially no heat exchange occurs, thereby obtaining a plant output higher than that of conventional plants.

## Claims

### Claim 1

An improvement in a process for generating electrical current by means of hydraulic turbogenerators, wherein a water stream is used to supply motive power to the turbines and wherein high pressure vapor is injected into the water stream, said improvement comprising the steps of:
injecting the high pressure vapor at a point outside of the turbine spaces;
injecting the high pressure vapor through conduits with relatively small interior cross-sectional areas; and
injecting the high pressure vapor into a water stream having a very high flow rate,
such that continuous pressure and velocity increases are caused in the water stream by the injected vapor and practically no heat exchange takes place between the injected vapor and the water prior to contact with the turbines.

### Claim 2 (depends on 1)

The improvement as claimed in claim 1, further comprising the step of using high output rotary pumps for generating the water stream.

### Claim 3 (depends on 1)

The improvement as claimed in claim 1, further comprising the step of generating the high pressure vapor in steam generators.

### Claim 4 (depends on 1)

The improvement as claimed in claim 1, further comprising the step of recirculating the water discharged from the turbines, such that the water is circulated in a closed circuit.

### Claim 5 (depends on 1)

The improvement as claimed in claim 1, wherein the water stream has a velocity on the order of 400 meters per second and said high pressure vapor is injected at a point on the order of 5 meters upstream the turbines.