NEN EN 13384-2 : 2015

Foreword
1 Scope
2 Normative references
3 Terms and definitions
   3.1 chimney segment
   3.2 collector segment
   3.3 air-flue gas system
   3.4 flue gas mass flow (m)
   3.5 calculated flue gas temperature (T[Wc,j])
   3.6 calculated draught of the flue gas of the heating
         appliance (P[Wc,j])
   3.7 flue damper
   3.8 balanced flue chimney
   3.9 cascade arrangement
   3.10 multi inlet arrangement
   3.11 air duct
   3.12 pressure equalising opening
4 Symbols, terminology, units
5 Calculation method
   5.1 General principles
   5.2 Pressure equilibrium condition
   5.3 Mass flow requirement
   5.4 Pressure requirement
   5.5 Temperature requirement
   5.6 Calculation procedure
6 Flue gas data characterising the heating appliance
7 Data for chimney and connecting flue pipes
8 Basic data for the calculation
   8.1 Air temperatures
   8.2 External air pressure (p[L])
   8.3 Gas constant
   8.4 Density of air (rho[L])
   8.5 Specific heat capacity of the flue gas (c[p])
   8.6 Water vapour content (sigma(H[2]O)[j]) and condensing
         temperature (T[sp])
   8.7 Correction factor for temperature instability (S[H])
   8.8 Flow safety coefficient (S[E])
   8.9 External coefficient of heat transfer
9 Determination of temperatures
10 Mixing calculations
   10.1 Flue gas mass flow (m[j])
   10.2 Flue gas temperature at the inlet of the chimney
         segment (T[e,j])
   10.3 CO[2]-content of the flue gas in the chimney segment
         (sigma(CO[2])[j])
   10.4 H[2]O-content of the flue gas (sigma(H[2]O)[j])
   10.5 Gas constant of the flue gas (R[j])
   10.6 Flue gas data
11 Density and velocity of the flue gas
12 Draught at the outlet of the connecting flue pipe and draught
   at the inlet of the chimney segment
   12.1 Draught at the inlet of the chimney segment
   12.2 Draught required at the outlet of the connecting flue
         pipe (Pz[e,j])
13 Inner wall temperature
14 Cascade installations
   14.1 Principle of the calculation method
   14.2 Pressure equilibrium condition
   14.3 Mass flow requirement
   14.4 Pressure requirement
   14.5 Temperature requirement
   14.6 Calculation procedure
   14.7 Draught at the outlet of the connecting flue pipe
         and draught at the inlet of the collector segment
   14.8 Inner wall temperature (T[iobc,j,i])
15 Balanced flue chimney
   15.1 Principle of the calculation method
   15.2 Pressure equilibrium condition
   15.3 Mass flow requirement
   15.4 Pressure requirements
   15.5 Temperature requirements
   15.6 Calculation procedure for balanced flue chimneys
   15.7 Mass flow of the supply air
   15.8 Determination of the temperatures in balanced flue
         chimneys
   15.9 Pressure resistance of the air supply
   15.10 Density and velocity of the supply air
Annex A (informative) - Recommendations
      A.1 - Recommendations for the chimney and heating appliances
      A.2 - Recommendations for connecting flue pipes
Annex B (informative) - Characteristics for the heating appliance

Defines methods for calculation of the thermal and fluid dynamic characteristics of chimneys serving more than one heating appliance.