Unix Engineering LLC implements EP/EPC power plant projects.
A power plant is an industrial enterprise that generates electricity to supply various consumers.
Electric stations are divided according to the following criteria:
By type of natural energy used:
a) hydroelectric power stations (HPP), in which electrical energy is generated from the mechanical energy of river water;
b) thermal power plants (TPPs) using fossil fuels;
By type of energy released:
a) thermal power plants that supply only electrical energy - condensing power plants (CPS);
b) thermal power plants that supply electrical and thermal energy - combined heat and power plants (CHP). The source of released heat is exhaust steam or combustion products of a heat engine.
By type of heat engine:
>a) power plants with steam turbines - steam turbine thermal power plants. They are the main type of power plants in Russia and abroad;
b) power plants with gas turbines - gas turbine thermal power plants;
c) power plants with combined cycle units - combined cycle thermal power plants;
Intended use:
a) district power plants that serve all types of consumers in the region and are independent enterprises;
b) industrial power plants that are part of manufacturing enterprises and are intended mainly to supply energy to enterprises and adjacent urban and rural areas.Steam turbine power plants differ:
by total and unit power of units
- Small - up to 25 MW
- Medium – 50 – 100 MW
- Large - >200 MW
according to the initial parameters of the pair
- Low pressure - up to 3.92 MPa
- High pressure - up to 12.7 MPa
- Ultra high pressure - up to 23.7 MPa
according to the technological diagram of connections of steam generators and turbogenerators
- Block (turbogenerator is attached to a specific steam generator)
- Non-block - the turbogenerator is connected to all steam generators of the station or part of it.
Offered main equipment: boiler-steam generator, turbine, generator, steam condenser, circulation pump, etc.
Power plants with steam turbines – steam turbine thermal power plants
Power plants with gas turbines – gas turbine thermal power plants
Power plants with combined cycle units – combined cycle thermal power plants
Unix Engineering LLC carries out the selection and installation of power plants.
Gas piston power plant
Gas piston power plant is a generation system created on the basis of a piston internal combustion engine running on natural or other combustible gas. It is possible to produce two types of energy (heat and electricity), and this process is called “cogeneration”. If gas piston power plants use a technology that also makes it possible to produce cold (very important for ventilation, refrigeration supply to warehouses, industrial refrigeration), then this technology is called “trigeneration”.
Design
GPA is an internal combustion engine with external mixture formation and spark ignition of the combustible mixture in the combustion chamber, using gas as fuel and operating according to the Otto cycle. The energy released during fuel combustion in a gas engine produces mechanical work on the shaft, which is used to generate electricity by an electric current generator. In addition, they can work both as part of refrigeration units and to drive pumps and gas compressors.
Fuel
Gas engines can use different types of gas: natural, gases with low calorific value, low methane content and low degree of detonation, or gases with high calorific value - flare, propane, butane, and are also adapted to be converted from one type of gas to another.
In addition, it is possible to use dual-fuel engines operating simultaneously on liquid and gaseous fuels:
The operation of a gas piston power plant with a control system and additional auxiliary equipment of the second gas line, as well as a system-mixing gas auxiliary equipment, allows the gas piston power plant to operate with two different types of gas. The gas supply may be changed, for example in the event of a gas pipeline failure or for island operation.
Application
Gas piston power plants are used on drilling platforms and wells, mines, wastewater treatment plants, as a backup, auxiliary or main source of electricity in enterprises, construction, administrative and medical institutions, airports, hotels, communication centers, life support systems, greenhouses, etc. They can work autonomously or in conjunction with centralized power supply and heat systems.
