RU99542U1 - HEAT ELECTROCENTRAL WITH ENERGY COMPLEX FOR HEATING MAIN WATER - Google Patents

Abstract

 A heat and power plant with an energy complex for heating make-up water, consisting of a heat and power plant containing, in particular, a pipeline and a pump for make-up water, a heat exchanger for cooling wastewater and heating make-up water, their pipelines, characterized in that the power plant is additionally connected to the heat and power plant, including a gas turbine with an electric generator, a heat exchanger for recovering heat of the exhaust gases, an electric cable, and also a heat pump with an electric motor, moreover, the heat pump is It is connected by pipelines with exits of a heat exchanger for cooling wastewater and heating make-up water and an inlet of a heat exchanger for utilizing the heat of exhaust gases, and the electric generator is connected by an electric cable to the electric motor of the heat pump.

Description

The utility model relates to the field of energy and can be used to implement energy-saving technologies for heating water in boiler houses and heating plants.

A device is known (Shpilrein E.E. Possibility of using a heat pump at a thermal power plant. Heat Power Engineering, 2003, No. 7, pp. 54-56), comprising a steam turbine with an electric generator, a heat pump with an electric motor, an exhaust steam condenser, a return mains water heater.

The disadvantage of this device is that the heating of the return network water is carried out by cooling the water after the condenser. The large temperature difference between these coolants and the use of a condensing turbine for the production of electricity creates conditions when the technology becomes thermodynamically impractical.

The closest in technical essence is the device (Priority areas for the development of energy-saving technologies in the housing and communal services of Russia. Preprint. Bauman Moscow State Technical University, 2004. Fedorov V.A., Milman O.O.) containing a steam boiler, steam counter-pressure turbine , heating system, heat pump, make-up water heater.

Its disadvantage is that for the operation of the heat pump water is used from the reservoir without additional heating and it can freeze in the cold season.

The purpose of the utility model is to create an energy complex for energy-saving heating technology for make-up water for a thermal power plant (heating boiler).

The essence of the utility model is that the device is a cogeneration plant (CHP) with an energy complex for heating make-up water, containing, in particular, a pipeline and a pump for make-up water, a heat exchanger for cooling wastewater and heating make-up water, their pipelines, characterized in that an additional energy complex is connected to the cogeneration plant, including a gas turbine with an electric generator, a heat exchanger for utilizing the heat of the exhaust gases, an electric cable, and a heat pump with electric ektroprivodom, wherein the heat pump is connected with the conduits of the heat exchanger for cooling output and the input of waste water heat exchanger for heat recovery from the flue gas, and an electric cable electrically connected to the heat pump motor.

The scheme of the device is shown in Figure 1. A CHPP with an energy complex for heating make-up water consists of a heat and power plant 1, a gas turbine 2 with an electric generator 3, an electric cable 4, a heat exchanger for recovering heat from the exhaust gases 5, a heat pump 6 with an electric motor 7, a make-up water pump 8, sewage pipe 9, a heat exchanger for cooling wastewater and heating make-up water 10, make-up water pipe 11.

TPP with an energy complex for heating make-up water works as follows. Wastewater (after cooling the power equipment of the combined heat and power plant 1) enters the heat exchanger for cooling wastewater and heating the make-up water 10 and then to the heat pump 6 with an electric motor 7, after which, after additional cooling, it is discharged into the reservoir.

Make-up water, passing through the make-up water pump 8 and heated in a heat exchanger for cooling wastewater and heating make-up water 10, enters the heat pump 6, where it is additionally heated, cooling the wastewater. Next, the make-up water is additionally heated in a heat exchanger to recover the heat of the exhaust gases 5 and enters the heat and power plant 1.

The proposed energy-saving technology allows two or more times to increase the thermal power transmitted to make-up water, compared with the thermal power generated by burning fuel in a gas turbine. This is ensured by the transfer of low-grade heat from wastewater to make-up water in a heat pump.

Claims (1)

A heat and power plant with an energy complex for heating make-up water, consisting of a heat and power plant containing, in particular, a pipeline and a pump for make-up water, a heat exchanger for cooling wastewater and heating make-up water, their pipelines, characterized in that the power plant is additionally connected to the heat and power plant, including a gas turbine with an electric generator, a heat exchanger for recovering heat of the flue gases, an electric cable, and also a heat pump with an electric motor, the heat pump being It is connected by pipelines with exits of a heat exchanger for cooling wastewater and heating make-up water and an inlet of a heat exchanger for utilizing the heat of exhaust gases, and the electric generator is connected by an electric cable to the electric motor of the heat pump.