RU2526771C2 - Universal system of power and water supply - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: invention relates to heat and power engineering, namely, to power plants that operate according to the Rankine steam-turbine cycle (condensation power plants, nuclear power plants, solar power plants). The concept of the invention is as follows: a system of long-distance power, heat and water supply is proposed, where cooling water after heating in condensers of steam turbines is transported to a serviced city, where it is used as a source of low-potential heat for all types of city heat pump plants. This is water of water reservoirs (system of technical water supply of power plants) or distillate of desalinated sea water.

EFFECT: source water, apart from production of drinking water from it, performs two additional functions: removal of spent heat of steam turbines and its usage as a low-potential source of heat for city heat pump plants, thus providing for liquidation of environmentally dangerous discharge of spent heat into environment and accordingly reducing cost of a power plant and simultaneously providing for mass usage of environmental and energy-efficient technology of heat production - heat pump technology.

3 cl, 1 dwg

Description

The invention relates to a power system, and in particular to power plants with steam turbine plants (IES, nuclear power plants, solar). The invention is aimed at further improving the idea of a single-tube heat supply that allows for long-distance heat and water supply. The latter was first proposed by the author [1] as applied to steam turbine thermal power plants and then was supplemented with an alternative technical solution of heat pump thermal power plants [2], including the use of powerful heat pump units (HPU) as a heat source on the working fluid of a thermodynamic cycle - carbon dioxide, operating according to the Lorentz cycle.

Unlike [1], this solution allows heat to be produced autonomously from electric production and, as a result, to transfer existing power plants (NPPs, KES) into electricity and heat supply without reconstructing steam turbines. However, this solution can be considered optimal if the served city has the same heat load (heating, hot water supply), which limits the scope of its use.

The aim of the invention is further development, including expanding the scope of the idea of single-tube heat supply. This goal is achieved by the fact that not the final product - hot water, but the circulating water of the condensers from the technical water supply system of the power plant or the distillate obtained in the desalination systems of sea water, which are used to remove the spent heat of the turbines of the power plants and which after heating them to steam turbine condensers enter the mains supplying water to the served city (region), where it is used as a low-potential source a heat source (NPIT) for all types of heat pump installations - for utility and industrial purposes, while an electric or gas turbine engine having a system for storing exhaust gases or collecting and utilizing greenhouse gas CO ₂ can be used as an HPU drive, and water after cooling in HPU evaporators enters the urban system for the preparation of technical and drinking water.

The scheme of the energy and water supply system is shown in figure 1. According to the scheme, water from the water supply source 1 enters the condenser tubes of the steam turbine 2, where it is heated by the condensation heat of the spent steam and enters the heat main 3, which delivers the heated water to the distribution water supply 4 of the served city. Here, water is distributed - as an NPIT - between HPP 5, serving communal consumers 6, with peak electric boiler rooms 7, and industrial HPPs 8, which generate heat for industrial consumers 9. This provides a fundamental possibility of creating cities with green energy.

The spent water, as a source of NPIT, in TNU is supplied to the water supply system 10 and then to the system for the preparation of technical and drinking water 11.

It should be noted that in spite of a fairly simple technological scheme, the technical solution provided provides a qualitative improvement of the existing thermal energy production systems.

Information sources

1. V.B. Pakshver. Heat supply systems of cities from powerful power plants according to a one-pipe scheme. Report for the degree of Doctor of Technical Sciences. M., 1968.

2. V.P. Protsenko. Single pipe heat supply system. RF patent №2320930 (priority from 11/08/06).

Claims (3)

1. A universal system of energy and water supply, including steam turbine power plants (IES, nuclear power plants, solar), a source of cooling water for turbine condensers, a main water supply system that delivers network water to a served city (region), heat pump units (HPU) with an electric or gas turbine drive, providing municipal and industrial heat loads of the city, water pipes, distributing network water between HPP and collecting the water cooled in them, which is then used to prepare water from it technically o and potable, characterized in that the low-grade heat source (NPIT) for municipal and industrial uses TNU heated in the condensers of steam turbines heating water. 2. The system according to claim 1, characterized in that the distillate of desalinated sea water is used as cooling water of turbine condensers and a source of NPIT for urban HPU. 3. The system according to claim 1, characterized in that in the TNU with a gas turbine drive, a system for the disposal of exhaust gases or the capture and disposal of greenhouse gas CO _{2 is used} .