ISO 7547:2022
Ships and marine technology — Air-conditioning and ventilation of accommodation spaces and other enclosed compartments on board ships — Design conditions and basis of calculations
This document specifies design conditions and methods of calculation for air-conditioning and ventilation of accommodation spaces on board seagoing merchant ships for all conditions, except those encountered in extremely cold or hot climates (i.e. with lower or higher conditions than those stated in 4.2 and 4.3). This document also provides special considerations for machinery control-rooms, wheelhouse, and dry provision store rooms in Annexes C, D and E.
NOTE Statutory requirements, rules and regulations can be applicable to the individual ships concerned.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design conditions
4.1 General
4.2 Summer temperatures and humidity
4.3 Winter temperatures
4.4 Outdoor air
4.5 Occupancy
5 Calculation of heat gains and losses
5.1 Applicability
5.2 Heat transmission
5.2.1 Method of calculation
5.2.2 Temperature differences between adjoining internal spaces
5.2.3 Total heat transfer coefficients
5.2.4 Calculation of the heat transfer coefficient
5.2.5 Measurement of transmission areas
5.3 Solar heat gain
5.4 Heat gain from persons
5.5 Heat gain from lighting and other sources
6 Airflow calculation
6.1 Volume of space
6.2 Supply airflow
6.2.1 Air supply for air-conditioning
6.2.2 Air supply for ventilation
6.3 Temperature of supply airflow
6.4 Exhaust airflow
6.4.1 Volume of airflow
6.4.2 Exhaust system
6.5 Air balance
Annex A (informative) Guidance and good practice in the design of ventilation and air-conditioning systems in ships
Annex B (informative) Thermal conductivities of commonly used construction materials
Annex C (normative) Additional requirements for machinery control-rooms
Annex D (normative) Additional requirements for the wheelhouse
Annex E (normative) Additional requirements for dry provision store rooms
Annex F (normative) Additional requirements for hot-air heating of wheelhouse windows
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design conditions
4.1 General
4.2 Summer temperatures and humidity
4.3 Winter temperatures
4.4 Outdoor air
4.5 Occupancy
5 Calculation of heat gains and losses
5.1 Applicability
5.2 Heat transmission
5.2.1 Method of calculation
5.2.2 Temperature differences between adjoining internal spaces
5.2.3 Total heat transfer coefficients
5.2.4 Calculation of the heat transfer coefficient
5.2.5 Measurement of transmission areas
5.3 Solar heat gain
5.4 Heat gain from persons
5.5 Heat gain from lighting and other sources
6 Airflow calculation
6.1 Volume of space
6.2 Supply airflow
6.2.1 Air supply for air-conditioning
6.2.2 Air supply for ventilation
6.3 Temperature of supply airflow
6.4 Exhaust airflow
6.4.1 Volume of airflow
6.4.2 Exhaust system
6.5 Air balance
Annex A (informative) Guidance and good practice in the design of ventilation and air-conditioning systems in ships
Annex B (informative) Thermal conductivities of commonly used construction materials
Annex C (normative) Additional requirements for machinery control-rooms
Annex D (normative) Additional requirements for the wheelhouse
Annex E (normative) Additional requirements for dry provision store rooms
Annex F (normative) Additional requirements for hot-air heating of wheelhouse windows
Bibliography