Construction area of Ulyanovsk Heating and ventilation

Contents

Source Data

2. Heat Engineering Calculation of Enclosing Structures

2.1. External Wall Heat Engineering Calculation

2.2. Thermal calculation of attic floor

2.3. 1st Floor Heat Engineering Calculation

2.4. Heat Engineering Calculation and Window Opening Design Selection

3. Calculation of heat losses through enclosing structures of rooms

4. Calculation of heat losses for heating of infiltrating air

5. Determination of building room heating plant capacity

6. Power calculation and selection of heat generator

7. Choice and design of water heating system

8. Hydraulic calculation of heating system

9. Heat Engineering Calculation of Single Tube Pipes and Heating Devices

heating systems

10. Selection and design of natural ventilation system

11. Selection of air distributors

12. Aerodynamic calculation of ventilation system

13. Determination of gas mixture parameters. Combustion calculation

14. Determination of combustion products quantity

15. Calculation of chimneys

16. Choice and design of gas supply system

17. Hydraulic calculation of gas supply system

Appendix 1. Heat loss through enclosing structures of rooms

Appendix 2. Heat loss to heat infiltrating air

Appendix 3. Calculation of room heating plants capacity

Appendix 4. Hydraulic calculation of heating system

Appendix 5. Heat engineering calculation of pipes and heating devices

Appendix 6. Aerodynamic calculation of natural ventilation system

Annex 7. Determination of gas mixture parameters. Combustion calculation

Appendix 8. Calculation of chimneys

Appendix 9. Hydraulic calculation of gas supply system

Appendix 10. Heating system diagram

Appendix 11. Diagram of natural ventilation system

Appendix 12. Diagram of gas supply system

Annex 13. Equipment Specification

18. List of used literature

1. Source Data

Designed heating, ventilation and gas supply system for one-store-

many residential buildings in the city of Ulyanovsk.

Construction district - Ulyanovsk.

The main facade is directed north.

The height of the typical floor is 3.0 m.

From SNiP 230199 * "Construction climatology" climatic

characteristics for the city of Ulyanovsk.

The temperature of the coldest five-day coverage is 0.92: 31 0С.

Heating period temperature: 5.14 0С.

Duration of the heating period: 228 days.

The average temperature of the hottest months: + 22 0С.

Barometric pressure in the construction area: 1013.3 hPa.

Dimensions of building structures: window openings - 1,41,5m

Internal air temperature (SNiP 23022003. "Thermal protection of buildings"):

- residential room + 21C;

- corner living room + 21C;

- kitchen + 19C;

- bathroom + 24C.

In the heating system, hot water is taken as the coolant:

- in the giving wasps highway 95;

- in the OS return highway 70;

Vertical single-tube heating system with lower wiring.

Factor n:

- outer wall = 1;

- attic floor = 0.9;

- floor overlaps = 0.9;

- window openings = 1.

3. Calculates heat losses through space enclosing structures.

For provision of air parameters in rooms within permissible limits

when calculating the thermal capacity of the system, it is necessary to take into account:

- heat loss through enclosing structures of buildings and premises;

- heat flow rate for heating of ambient air infiltrating into rooms;

- heat consumption for materials heating;

- heat inflow, which regularly enters the room of instruments and other sources.

Heat losses through the internal enclosing structures of the rooms are not taken into account if the temperature difference in these rooms is less than 100С.

At equipment selection for heating of the residential building the calculation of thermal losses through external construction protections - walls, overlappings, floors and apertures is initial (windows, doors).

The main heat losses of the building Q, W are composed of heat losses by all enclosing structures:

∑Q _ "OGR" =∑k (t _ Bt _ H) × n × F (1+∑β), "W" (3.1)

where k - coefficient of a heat transfer of an enclosing structure, W / (m2os),

accepted for the enclosing structure from its thermal engineering calculation;

F - design area of the enclosing structure, m2;

n- coefficient depending on the position of the outer surface of the guard -

an external air structure;

tn design ambient temperature, for heating design

(temperature of the coldest five-day week security 0.92), OS;

t to the calculated indoor air temperature taken as per

Table 1 [4];

- factor taking into account additional heat loss through fences

(accepted as a fraction of the main heat losses);

Design floor area F above basement and attic floor

determined by multiplying linear dimensions.

Length of outer walls of corner rooms is measured from axes of inner walls to

outer corner surfaces, and outer walls not corner rooms - between axes

interior walls. The height of the outer walls of the first floor is measured taking into account

floor structures. This floor is located on the ground, external walls are measured

from the outer surface of the first floor structure to the upper

surfaces of the attic floor.

Calculation is done in tabular form (see Appendix 1).

7. Choice and design of water heating system

When designing a building heating system, solutions are used.

providing uniform heating of room air, hydraulic and

thermal stability of the system, its availability for cleaning and repair.

The heating system in the building is designed vertical single-tube with

adjustable upper wiring with KPC valve.

Cast iron section radiators MS140108 are used as heating devices.

Ordinary steel pipes are used on mains and risers

water and gas pipelines as per GOST 326275 *.

Trunk pipelines are routed along the wall in channels in the ground floor.

Temperature in supply line 95 0С, in reverse - 70 0С.

A circulation pump is installed on the return line.

The heating system risers are laid near the external walls of the rooms open at a distance from the surface of the building structures to the axis of the risers of 35 mm.

Pipes are fixed by supports to walls. The slope value of the main pipelines is 0.002.

On the return line we envisage installation of drain cranes with connectors.

Pipelines at the intersection of floors, internal walls and partitions are laid in casings made of non-combustible materials, filled with asbestos cord.

10. Selection and design of natural ventilation system

In the designed building, air is removed from the premises

exhaust ventilation system with natural impulse.

Air is removed from the rooms via exhaust ducts, which

are located in the internal walls of the building .

Exhaust ventilation grids with adjustable blinds of AMN type are installed at the beginning of each channel.