Initial data

Climatic region according to SNiP 23-01-99 "Construction climatology" - IIB; Snow cover weight Wo = 180 kg/m2; Velocity wind pressure So = 30 kg/m2; The average temperature of the coldest five-day period is minus 26 °C. The average temperature for the heating season is minus 1,8 °C. The number of hours of operation of the heating system per day is 24 hours. The duration of the heating season is 220 days. The temperature of the heat carrier of the heating system is 95/70 °C, the temperature of the heat carrier is regulated depending on the outside air temperature. The temperature of the heat carrier for hot water supply is 65 °C. The temperature inside the heated rooms is +18 oC. The air temperature in the boiler room is +5 °C.

Brief description of the object

The automated gas boiler house is located in a separate building and is intended for heat supply of heating, ventilation and hot water supply systems of administrative and residential buildings. The location of the designed boiler house is determined by permits. Overall dimensions of the building width (in axes) - 6,8 m, length (in axes) - 6,8 m, number of storeys - 2 floors. The height of the boiler room in the ridge is 6,35 m. The degree of fire resistance of the boiler room is II. Category of premises for explosive and fire hazard - G, C3. The minimum fire resistance limit of the building's load-bearing structures, taking into account the coating, is 150 minutes (R150). Functional fire hazard class - F5.1.

Main architectural solutions

The proposed building is a one-story building. Entrance-exit to the boiler room is organized from axes 2-1. The boiler room is equipped with chimneys 24,0 m high. The outer wall enclosing structures of the boiler room are made of sandwich panels 120 mm thick with a fire resistance rating of EI 150.

Constructive decisions

The boiler room is a one-story building with a gable roof, with a slope of 30. The support of the beams on the columns is assumed to be hinged, and the columns to the foundation are rigid. Transverse and longitudinal stability and geometrical invariability are provided by vertical connections, as well as roofing structures with girders and corrugated board. The posts are made of a bent welded profile of a closed profile □100x5 and are installed on a foundation slab. The beams are made of a closed profile □150x100x5, connections are made of a closed profile □50x3 GOST 30245-2003. Live loads on the floor of the boiler house are 200 kg/m2 (according to SNiP 2.01.07-85* “Loads and impacts”. Foundations and walls. The building of the boiler house and the foundations for the equipment rest on a monolithic reinforced concrete slab. To ensure optimal operating conditions for the burners, the floors in the boiler room hall are made of non-dusting materials.The foundation for the boiler building is made in the form of a monolithic reinforced concrete slab of concrete B20, W6, F75 with a thickness of 200 mm (see section KZh1).The foundation for the chimney is a separate columnar foundation, made of concrete B20, W6 , F75 (see section KZh2). Groundwater is slightly aggressive to concrete of normal permeability and non-aggressive to concrete W6 in all respects, non-aggressive to the reinforcement of reinforced concrete structures. The side surfaces of the foundations in contact with the ground are coated with penetrating waterproofing of the Kalmatron type. The outer walls are made of sandwich panels and have the required load-bearing capacity Explosion protection is provided by the presence of an easily dropped wall section. Calculation of the area of ​​the easily dropped section of the wall: SLSK= V∙0,03; V=310 m3; SLSK \u0,03d V ∙ 9,3 \u2d 0.9 m2.1. Blinds, doors. Louvre grilles are manufactured by CJSC Lissant Ventilation Plant. Entrance doors measuring 30x9006 m are manufactured by Severnaya Kompaniya LLC. Interior decoration of premises. For interior decoration of premises, see the "Register of premises decoration" section AR. Roof. Profiled sheet covering over metal beams, vapor barrier layer, thermal insulation layer and polymer membrane. The roof is gable with slope angles of 2, unexploited, insulated. Floors. For the composition of the floors, see "Explication of the floors" in the AP section. Exterior finish. For the color scheme of the boiler building - gray (RAL22), see the AP section. Fire transport access is provided along the perimeter of the building. Roofing, waterproofing and sealing materials must meet the requirements of current GOSTs and TUs. The project is designed for the production of works in the summer. In winter, work should be carried out in accordance with the instructions of SNiP 81-XNUMX-XNUMX (the scope of activities is provided for when developing a project for the production of work).

Thermal loads of the boiler house (taking into account losses in heat networks)

For heating - 1954 kW 1,680 Gcal/hour; for hot water supply (maximum) - 1000 kW 0,860 Gcal / hour; for hot water supply (average hourly) - 417 kW 0,359 Gcal / hour; for own needs of the boiler house - 46 kW 0,040 Gcal/hour. General (taking into account own needs and heat losses): - 3000 kW 2,58 Gcal/hour. Connection diagram of heat consumers - in accordance with the design assignment: heating - independent, two-pipe with temperature control of the heat carrier depending on the outside temperature. The heat carrier for the heating system is network water with design temperature parameters of 95 - 70 ºС, heat carrier temperature control depending on the outdoor temperature according to the heating schedule. The coolant pressure at the outlet of the boiler room is 0,60 MPa, at the inlet - 0,30 MPa. The heat carrier for the hot water supply system is water with a temperature of 65 ºС. The coolant pressure at the outlet of the boiler room is 0,35 MPa. The main fuel is natural gas, calorific value is 8000 kcal/m3, density is 0,68 kg/m3. The gas pressure at the inlet to the boiler room is 0,0005 MPa (g). The water supply of the boiler house is carried out from the water supply network. The quality of source water must comply with the requirements of GOST 2874-82* "Drinking Water". The pressure of the source water at the inlet to the boiler room is 0,20 MPa. Water disposal from the boiler room - through outlets to the external sewerage network. In this project, a number of progressive technical solutions were used, namely: the latest technological and gas equipment from leading Western companies was used, complete automation of the boiler house operation processes was performed, eliminating the need for the constant presence of maintenance personnel.

Installation instructions.

All pipelines passing through the foundation, walls, ceilings and partitions are laid in sleeves of the appropriate diameter, with the holes sealed with waterproof and gas-tight elastic materials. Installation of cold water pipelines must be carried out by a specialized installation organization licensed to carry out this type of work. Installation of cold water pipelines is carried out in accordance with the requirements of SNiP 3.05.01-85 * "Internal sanitary systems". Installation, testing and commissioning of internal cold water supply systems shall be carried out in accordance with the requirements of SNiP 3.05.01-85 * "Internal sanitary systems".