Technical and economic indicators

 Estimated productivity of the boiler house (taking into account own needs and heat losses in networks), Gcal/hour: 20,592
Installed nominal capacity of the boiler house, Gcal/h: 20,592
Annual heat generation, thousand Gcal; 51,573
Annual heat supply to consumers, thousand Gcal.; 51,100
Annual number of hours of using the installed capacity, hours; 2505
Annual fuel consumption:
- natural, thousand m3; 7007,2
- conditional, thousand T.U.T.; 8,008
Installed power of pantographs, kW; 404,18
Annual electricity consumption. MWh; 2,61112
Annual water consumption:
- for the needs of hot water supply (in ITP consumers), thousand m3; 203
- for own needs of the boiler house, thousand m3; 16,84
Construction volume of the boiler room, m3.; 4440
The total building area of ​​the building, m2.; 569,68
The total estimated cost of construction, million rubles; negotiable
Specific indicators per 1Gcal/h of installed capacity;
- power of pantographs, kW/ Gcal/h; 19,63
- number of personnel, people/Gcal/h; -
Specific reference fuel consumption per 1 Gcal of released heat, T.U.T./Gcal.; 0,1567
Specific reference fuel consumption per 1 Gcal of generated heat, T.U.T./Gcal.; 0,155

Architectural and space-planning solutions

The boiler house building is a detached, one-story, rectangular configuration in plan, with a total size in the axes of 27,80 X 15,30 m. 9,19 and 1 - 6 m. For a relative mark of 10,17, the level of the finished floor of the first floor, corresponding to an absolute mark of 0,000 m, is taken. The boiler room and a diesel generator room 8.15 m high are located in the volume of the building, which has access to the boiler room and to the street. Partitions for diesel generator room - solid brick. To provide access to the boiler room, a doorway and a gate are provided. The roof is flat, made of rolled waterproofing materials, with an external organized drain. Access to the roof is provided through the external fire escape P4,2. Filling window openings - metal-plastic window blocks with single glazing. Facade finishing: walls - multilayer metal panels with an inner layer of mineral wool insulation; basement - facing with natural stone on a brick wall. 

Structural and space-planning solutions

The building of the boiler house was designed according to the frame structural scheme with "sandwich" sheathing - panels. The columns are designed from rolled I-beams 20K2. Column spacing 5.56x3.82 m. Steel C255. The connections are designed from a closed bent profile 80x4. The outer walls are hinged "sandwich" panels 150 mm thick. The basement and internal walls are made of brick, 250-K380 mm thick, designed from bricks of the KORPO 1NF/100/2.0/50 brand. Overlapping of working platforms - a monolithic reinforced concrete slab on a profiled sheet 150 mm thick, laid on metal beams from I-beams 16B2 and 25B1. Concrete B15. Beam steel C255. Covering - roof truss from bent-welded pipes (120x80x5, 80x4) in accordance with GOST 30245-2003. Steel of belts C345, steel of braces C255. Stairs metal floor metal stringers. The spatial rigidity and stability of buildings is ensured by the joint work of columns, vertical and horizontal connections and a hard disk of the coating. Foundations for columnar columns made of monolithic reinforced concrete, united by a power floor slab 300 mm thick, concrete B15, W6, F100. Under the foundation, concrete preparation is provided with a thickness of 100 mm, along a sand cushion with a thickness of 2600 mm. 2 chimneys (2 gas ducts each with an outer diameter of 800 mm) 33 m high are fixed on spatial metal structures installed on their own foundations. The metal structures of the chimneys are made of racks (pipe with a diameter of 219x4 and 133x4) united by a grid of 80x60x4 bent-welded pipes. The foundations for the pipe are piled. Bored piles with a diameter of 350 mm, length 17 m, concrete B25, W6, F75. Columnar grillages made of concrete B25,W6, F100. The relative elevation of 0.00 corresponds to the absolute elevation of +8,15 m. In accordance with the report on engineering and geological surveys, the base of the foundations are 2 2 fluid-plastic, thixotropic loams E=70 kg/cm , cp=15°, c=0.14 kg/cm , R \u41d l,2 2 0,82 kg / cm . The pressure on the ground does not exceed p=2 kg/cm. The piles are based on 2 0,38 loams with high plasticity with IL=110, E=22 kg/cm, <p=0.3°, c=57 kg/cm. The bearing capacity of piles (~40t) was determined from static sounding data. Efforts in piles are not more than 0,5 tf. The maximum level of groundwater is at a depth of 0-6 m. Groundwater is non-aggressive to concrete of normal permeability. In order to protect the concrete of underground structures, the concrete grade for water resistance is W6, the concrete surface is coated with hot bitumen twice. The expected average settlement of the building is not more than 11.1 mm. Pipe stability is guaranteed. The calculation of building structures was performed using the SCAD program version 2 and Foundation, and manual calculation according to the SNiP formulas (precipitation, heel). According to the results of the survey, the category of the technical condition of buildings in the surrounding area is 30nd category for all buildings. The expected maximum additional draft of buildings and structures located within a XNUMX-meter zone is not more than the maximum allowable values. The project provides for the organization of observations of the existing buildings of the surrounding buildings.

 Engineering equipment, utility networks, engineering activities

The power supply of the boiler house is provided in accordance with the technical specifications. The power allowed for connection is 378,63 kVA according to the III category of reliability. Power source - CHP. The point of connection to the network is 0,38 kV switchgear of the new transformer substation (BKTP). Designing, Required category of power supply for electrical receivers of the boiler room -II. As a second source of power supply, in accordance with the terms of reference, a stationary diesel generator set SDMO-V550K (500 kVA) is provided. Redundant power supply of the automatic control and dispatching system is provided from an independent source - UPS (battery - 1,5 kVA). Estimated recovery time of heat supply to consumers of the boiler house after a power outage from the CHP is no more than 5 minutes. Estimated load of the boiler house - 378,63 kVA. To connect a new transformer substation (BKTP) to switchgear-0,38 kV, it is planned to lay a cable line with cables with a cross section of 2x2 (4x150) mm2 from the ASU of the boiler house. The cable cross-sections were checked for long-term permissible load, voltage loss, the condition for disconnecting the damaged section at a single-phase short-circuit current. Consumers of electric power of the boiler house are: electrical receivers of technological equipment, network and circulation pumps, hot water boilers, instrumentation, electric motors of ventilation systems, working, emergency lighting; fire alarm devices; means of communication; Outdoor Lighting. For the distribution of electricity and protection of electrical networks, the device of the main switchboard (ASU) is provided, completed on the elements f. "ABV", with automatic input reservation device (AVR). To account for the consumed electricity at the inputs of the ASU, electronic meters "Mercury 230" are provided. Industrial explosion-proof lamps with fluorescent lamps are provided for lighting industrial premises. To illuminate the territory, floodlights with sodium lamps are installed on the facade of the building. For the installation of distribution and group electrical networks, cables of the VVGng brand are provided. The security system is adopted of the TN-CS type with a device at the input to the boiler room for re-grounding the neutral conductor and the main potential equalization system. Protective grounding of electrical equipment is provided by an independent fifth wire from the main switchboard, together with the supply wires. The project provides for a potential equalization system by combining on the main ground bus (GZSH) conductive parts: busbar MSB (PE), steel pipes of building communications, metal parts of building structures, lightning protection. The PE VRU-0,4 kV bus was adopted as the GZSH. Natural grounding conductors (reinforced concrete foundations of chimneys, boiler house) and artificial grounding conductor, combined into one device, are accepted as a grounding conductor. In accordance with the current contract for the provision of communication services, it is planned to connect the boiler house to the existing city telephone network. Communication networks are used to connect the boiler house to a single dispatching system. The main communication channel is wired, the backup is a radio channel (GSM / GPRS - modem); the system automatically selects a communication channel with priority on the wired Internet. Automatic transmission of emergency and technological signals to the control center via communication channels is provided. Upon receipt of an emergency signal, the dispatcher by phone sends the duty group closest to the boiler house that gave the signal. The control room and duty groups operate around the clock. Water supply and sanitation (HWS) of the object's consumers - in accordance with the conditions of connection. Water supply is provided through two water inlets with a diameter of 160 mm, from the public water supply network with a diameter of 250 mm along the street. Polyethylene pipes according to GOST 18599-2001 were selected for laying water inlets. Electric gate valves and check valves are installed on fire lines. Guaranteed pressure at the connection point - 28 meters of water column. Cold water consumption - 56,31 m3 / day, including: for replenishing heating networks - 55,2 m / day, for filter regeneration - 0,91 m / day (1 time in three days), for wet cleaning of the boiler room - 0,2 m / day (1 time per month). Periodic needs: for filling heating networks - 308,9 m / day (1 time per year), for filling the boiler room system - 45 m / day (1 time per year). An integrated water supply system has been designed for the facility. The required pressure for household and drinking needs is 14,07 meters of water column. The scheme of the integrated water supply system is a dead end. For the device of the integrated water supply system, galvanized steel water and gas pipes according to GOST 3262-75 *, steel electric-welded pipes according to GOST 10704-91 were selected. Water consumption for internal fire extinguishing - 2x3,3 l / s. The number of fire hydrants with a diameter of 50 mm - 3 pcs. The required pressure for the needs of internal fire extinguishing is 21,4 meters of water column. External fire extinguishing is provided from the existing fire hydrants: No. 45 on the public water supply network with a diameter of 221 mm along the street. Water consumption for external fire extinguishing - 10 l / s. Disposal of domestic wastewater in the amount of 0,2 m3/day (1 time per month), industrial wastewater from filter regeneration in the amount of 0,91 m3/day (1 time in three days) and from boiler discharge in the amount of 45 m3/day ( 1 time per year) is provided in the well No. 226 on the network of the yard combined communal sewerage system with a diameter of 230 mm.