Інженерне обладнання будинків і споруд. Димоходи. Методи теплотехнічного та аеродинамічного розрахунків. Частина 1. Димоходи з підключенням одного теплогенератора

1 2 З?

1 2 З? 4 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 6 6.1 6.2 6.3 6.4 6.5 7 1 Scope 1
2 Normative references 1
З? Terms and definitions 2
4 Symbols, terminology and units .... 8
5 Calculation method for non-balanced
flue chimneys 12
5.1 General principles 12
5.2 Pressure requirements 13
5.3 Temperature requirement 14
5.4 Calculation procedure 15
5.5 Flue gas data characterising the heating appliance 16
5.6 Characteristic data for the calculation 20
5.7 Basic values for the calculation . . 21 5.8 Determination of the
temperatures 25
5.9 Determination of the density of the flue gas and the velocity of the flue gas 29
5.10 Determination of the pressures . 30 5.11 Minimum draught required at the flue gas inlet into the chimney and maximum allowed draught (PZe and ^zemax) and maximum and minimum differential pressure at the flue gas inlet into the chimney (PZoe and Pzoemin) 34
5.12 Calculation of the inner wall temperature at the chimney outlet (Tjob) 38
6 Secondary air for negative pressure chimneys 40
6.1 General 40
6.2 Calculation method 40
6.3 Basic values for the calculation of secondary air 41
6.4 Pressures 42
6.5 Temperature requirement with secondary air 46
7 Calculation method for balanced flue chimneys 46

7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.11 7.12 8 8.1 8.2 8.3 7.1 General principles 46
7.2 Pressure requirements 48
7.3 Temperature requirements .... 48
7.4 Calculation procedure 48
7.5 Flue gas data characterising the heating appliance 49
7.6 Characteristic data for the calculation 49
7.7 Basic values for the calculation . . 50
7.8 Determination of the temperatures 51
7.9 Determination of densities and velocities 75
7.10 Determination of pressures ... 76
7.11 Minimum draught required at the flue gas inlet into the chimney and maximum allowed draught (P Ze and Pzemax) andmaximum and minimum differential pressure at the flue gas inlet into the chimney (P ZOe and Pzoemin) 76
7.12 Calculation of the inner wall temperature at the chimney outlet ( 8 Consideration of the condensation heat of the flue gas water vapour ... 81
8.1 General 81
8.2 Onset of condensation 82
8.3 Calculation of the flue gas temperature at the outlet of a chimney segment with condensation (j > NsegK) 85
Annex A (informative)
Calculation of thermal resistance ... 92
Annex Annex C (informative) ,
Chimney outlet with regard to adjacent buildings 107
Annex D (informative)
Limit curves of the classification for
the draught regulator . 108
Annex E (informative)
Determination of the gas constant R considering the condensation .... 109
Bibliography 111

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Engineering equipment of buildings and constructions

CHIMNEYS

THERMAL AND FLUID DYNAMIC CALCULATION METHODS

Part 1. Chimneys serving one appliance 1 2 1 SCOPE
This European Standard specifies methods for the calculation of the thermal and fluid dynamic characteristics of chimneys serving one appliance.
The methods in this Part of this European Standard are applicable to negative or positive pressure chimneys with wet or dry operating conditions. It is valid for chimneys with heating appliances for fuels subject to the knowledge of the flue gas characteristics which are needed for the calculation.
The methods in this Part of this European Standard are applicable to chimneys with one inlet connected with one appliance.
The methods in Part 2 of this European Standard are applicable to chimneys with multiple inlets and one inlet with multiple appliances.
Part 3 describes methods for the development of diagrams and tables for chimneys serving one heating appliance.

2 NORMATIVE REFERENCES

This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications EN 1443:2003 Chimneys - General requirements EN 1856-1:2009 Chimneys - Requirements formetai chimneys - Part 1: System chimney products EN 1859:2009 Chimneys - Metal chimneys - Test Methods
EN 13502:2002 Chimneys - Clay/Ceramic Flue Terminals - Requirements and test methods CEN/TR 1749:2005 European scheme for the classification of gas appliances according to the method of evacuation of the products of combustion (Types)
are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this Standard only when incorporated amendment or revision. For undated the latest edition of the publication applies (including amendments).

EN 1443:2003 Chimneys-General requirements
EN 1856-1:2009 Chimneys - Requirements for metal chimneys - Part 1: System chimney products
EN 1859:2009 Chimneys - Metai chimneys - Test Methods
EN 13502:2002 Chimneys - Clay/Ceramic Flue Terminals - Requirements and test methods
CEN/TR 1749:2005 European scheme for the classification of gas appliances according to the method of evacuation of the products of combustion (Types)
EN 1443:2003 EN 1856-1:2009 EN 13502:2002 3.1 3.1.1 (nominal heat output)
3.1.2 For the purposes of this European Standard, the terms and definitions given in EN 1443 and the following apply.
3.1 heat output (Q)
amount of heat produced by a heating appliance per unit of time
3.1.1 nominal heat output (Qn) I
continuous heat output specified by the manufacturer of the heating appliance related to specified fuels
3.1.2 heat output range
range of output below the nominal heat output specified by the manufacturer over which the appliance can be used

3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.2 heat input (Qf)
amount of heat in unit time which is supplied to the heating appliance by the fuel based on its net caloric value H u
3.3 efficiency of the heating appliance (iivv)
ratio of the heat output (Q) from the appliance to the heat input (Q F ) ■?
3.4 flue gas mass flow (m)
mass of flue gas leaving the heating appliance through the connecting flue pipe per time unit
3.5 effective height of the chimney (H)
difference in height between the axis of the flue gas inlet into the chimney and the outlet of the chimney
3.6 effective height of the connecting flue Pipe (H v )
Difference in height between the axis of the flue gas chimney outlet of the heating appliance and the axis of the flue gas inlet into the chimney
In the case of open fire chimneys, H v is the difference in height between the height of the upper frame of the furnace and the axis of the flue gas inlet into the chimney.
3.7 draught
positive value of the negative pressure in the flue
3.8 theoretical draught available due to chimney effect (Ph)'
pressure difference caused by the difference in weight between the column of air equal to the effective height outside a chimney and the column of flue gas equal to the effective height inside the chimney
3.9 pressure resistance of the chimney (Pr)
pressure which is necessary to overcome the resistance of the flue gas mass flow which exists when carrying the flue gases through the chimney

3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.10 wind velocity pressure (PJ
pressure generated on the chimney due to wind
3.11 minimum draught at the flue gas inlet
into the chimney (P z )
difference between the minimum theoretical draught and the sum of the maximum pressure resistance of the chimney and the wind velocity pressure
3.12 maximum draught at the flue gas inlet into the chimney (P Zmax )
difference between the maximum theoretical draught and the minimum pressure resistance in the chimney
3.13 minimum draught for the heating appliance (Pw)
difference between the static air pressure of the room of installation of the heating appliance and the static pressure of the flue gas at the chimney outlet of the appliance which is necessary to maintain the correct operation of the heating appliance
3.14 maximum draught for the heating appliance (Pwmax)
difference between the static air pressure of the room of installation of the heating appliance and the static pressure of the flue gas at the outlet of the appliance which is the maximum allowed to maintain the correct operation of the heating appliance
3.15 effective pressure resistance of the connecting flue pipe (P FV )
static pressure difference between the axis of the inlet of the connecting flue pipe and the axis of the chimney outlet due to the theoretical draught and pressure resistance
3.16 effective pressure resistance of the air supply (P B )
difference between the static pressure in the open air and the static air pressure in the room of installation of the heating appliance at the same height
3.17 3.18 3.19 3.20 3.21 3.22 3.17 minimum draught required at the flue gas inlet into the chimney (P Ze )
sum of the minimum draught required for the heating appliance and the draught required to overcome the effective pressure resistance of the connecting flue pipe and the effective pressure resistance of the air supply
3.18 maximum allowed draught at the flue gas inlet into the chimney (P Ze max) sum of the maximum draught allowed for the heating appliance and the draught required to overcome the effective pressure resistance of the connecting flue pipe and the effective pressure resistance of the air supply
3.19 maximum positive pressure at the flue gas inlet into the chimney (P Z o) sum of the difference of the maximum pressure resistance and the minimum theoretical draught of the chimney and the wind velocity pressure
3.20 minimum positive pressure at the flue gas inlet into the chimney (Pzomin) difference of the minimum pressure resistance and the maximum theoretical draught of the chimney
3.21 maximum differential pressure of the heating appliance (Pwo)
maximum difference between the static pressure of the flue gas at the chimney outlet of the appliance and the static pressure of the air at the inlet to the heating appliance specified for its correct operation
3.22 minimum differential pressure of the heating appliance (Pwomin)
minimum difference between the static pres