EN ISO 8861:1998 PDF

Name: EN ISO 8861:1998 — Shipbuilding - Engine-room ventilation in diesel-engined ships - Design requirements and basis of calculations (ISO 8861:1998)
SKU: EN ISO 8861:1998
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Shipbuilding - Engine-room ventilation in diesel-engined ships - Design requirements and basis of calculations (ISO 8861:1998)

Название (английский):

EN ISO 8861:1998

Shipbuilding - Engine-room ventilation in diesel-engined ships - Design requirements and basis of calculations (ISO 8861:1998)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 16
Дата публикации:: 15 мая 1998 г.
Издание:: CEN EN 8861 edition 1 version 1
ICS:: 47.020.90

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Описание (английский):

Diese Norm legt Entwurfbedingungen und anwendbare Berechnungsgrundlagen für die Lüftung von Maschinenräumen auf Schiffen mit Hauptantrieb durch Dieselmotoren unter üblichen Bedingungen für alle Fahrtgebiete fest. Im Anhang A werden Anleitungen für anzuwendende Verfahren beim Entwurf von Lüftungssystemen von Maschinenräumen auf Schiffen gegeben.

Abstract

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Overview

EN ISO 8861:1998 - "Shipbuilding - Engine-room ventilation in diesel-engined ships - Design requirements and basis of calculations" (ISO 8861:1998) defines design requirements and calculation methods for engine-room ventilation on diesel‑engined ships under normal service conditions. The standard establishes mandatory calculation bases (airflow for combustion and for heat evacuation), design assumptions (e.g. ambient temperature +35 °C, permitted temperature rise 12.5 K) and informative guidance (Annex A) on good practice for distribution, exhaust and safety features.

Key topics and technical requirements

Design conditions

Ambient air temperature assumed: +35 °C
Maximum temperature rise through engine room: 12.5 K

Total airflow (Q)

Q = qc + qh (sum of combustion airflow and heat‑evacuation airflow) or Q ≥ 1.5 × qc (combustion air + 50%), whichever is larger.

Airflow for combustion (qc)

Separate calculations for main propulsion engines (qdp), diesel generators (qdg) and boilers (qb) using service standard power, specific air requirement (mad), and air density (r = 1.13 kg/m3).

Airflow for heat evacuation (qh)

Based on summed heat emissions from engines, generators, boilers, piping, electrical installations, exhausts and other equipment, using specific heat capacity c = 1.01 kJ/(kg·K) and ΔT = 12.5 K. A factor (0.4) reflects typical arrangements; may be adjusted for special layouts.

Heat emission calculations

Methods and example default values for heat loss percentages, boiler/thermal heater emissions, exhaust pipe losses, hot‑tank surface emissions (tabled values), and electrical heat loads.

Design guidance (Annex A)

Air distribution (≈50% to level of engine turbocharger), maintain slight positive pressure (normally ≤ 50 Pa), separate exhaust for purifier/fuel‑oil rooms, and fire dampers per SOLAS requirements.

Practical applications

Use for HVAC and ventilation design of engine rooms on cargo ships, tankers, naval vessels and passenger ships with diesel propulsion.

Inputs for naval architects, marine HVAC engineers, shipyards, system integrators and classification societies to:

Size ventilation fans and ducts
Determine combustion‑air intake and distribution
Verify cooling/heat‑removal capacity to protect heat‑sensitive equipment
Ensure regulatory and safety alignment with SOLAS and load‑line requirements

Related standards and references

ISO 3046‑1 (engine performance and service power)

ISO 31 parts 1, 3, 4 (quantities and units)

ISO 3258 (air distribution vocabulary)

SOLAS II‑2 and International Load Line Convention - referenced for fire dampers and closing appliances

Keywords: EN ISO 8861:1998, engine-room ventilation, diesel-engined ships, ventilation airflow, heat emission, marine ventilation, shipbuilding standards, ventilation design calculations.

EN ISO 8861:1998 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards and references

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