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A319/A320/A321 TECHNICAL TRAINING MANUAL CABIN INTERIOR & EMERGENCY EQUIPMENT COURSE 21 AIR CONDITIONING

This document must be used for training purpose only

Under no circumstances should this document be used as a reference.

It will not be updated.

All rights reserved. No part of this manual may be reproduced in any form, by photostat, microfilm, retrieval system, or any other means, without the prior written permission of Airbus Industrie.

A319/A320/A321 TECHNICAL TRAINING MANUAL _ CABIN INTERIOR & EMERGENCY EQUIPMENT COURSE

21 AIR CONDITIONING

21 AIR CONDITIONING UFD1000

TABLE OF CONTENTS

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GENERAL System Presentation (1) .......................... 1

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GENERAL VENTILATION System Design Philosophy (1) ..................... 7

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21 AIR CONDITIONING

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21 AIR CONDITIONING

21 - AIR CONDITIONING 21-00-00 GENERAL SYSTEM PRESENTATION

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CONTENTS: Introduction Presentation

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GENERAL - SYSTEM PRESENTATION The air conditioning system maintains the air in the pressurized fuselage zones at the correct levels of temperature, freshness and pressure INTRODUCTION

TMUAIR604-T01 LEVEL 1

UFD1000

Air supply comes from the pneumatic system. Then, air is regulated in temperature by the temperature regulation sub-system. Proper ventilation of the avionics equipment is ensured by the avionics ventilation sub-system. The pressurization sub-system ensures a cabin altitude compatible with crew and passenger comfort.

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GENERAL - SYSTEM PRESENTATION PRESENTATION

TMUAIR604-T02 LEVEL 1

UFD1000

Bleed air coming from the pneumatic system is controlled in flow before reaching two air conditioning packs which ensure basic temperature regulation. Air delivered by the packs is mixed with recirculated air from the cabin zones. Fine temperature adjustment of air distributed in the pressurized zones is obtained by controlling the amount of hot air added to the air coming from the mixer unit. Correct pressurization is obtained by controlling the conditioned air discharge through one outflow valve.

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21 - AIR CONDITIONING 21-20-00 GENERAL VENTILATION SYSTEM DESIGN PHILOSOPHY

TMUVEN301 LEVEL 1

UFD1000

CONTENTS: Avionics Lav & Galleys Cargo (Option) Controllers

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21 AIR CONDITIONING

GENERAL VENTILATION - SYSTEM DESIGN PHILOSOPHY AVIONICS The avionics ventilation system ensures a proper ventilation of the electrical equipment. Air is taken from different sources depending on the aircraft configuration and ambient conditions. Ventilation air is blown to the equipments by a blower fan and extracted by an extraction fan. LAV & GALLEYS The lavatory and galleys ventilation system is used to remove unpleasant odors before they enter the cabin. Ventilation air is supplied from cabin distribution ducts and discharged overboard by an extraction fan. CARGO (Option)

TMUVEN301-T01 LEVEL 1

UFD1000

The FWD & AFT cargo compartments are ventilated by cabin ambient air coming from the cabin zones through openings in the cabin floor behind the sidewall panels. The FWD & AFT cargo compartments are ventilated by means of an extraction fan or by differential pressure. Note that the ventilation system is optional and independent for each compartment. CONTROLLERS The avionics equipment ventilation computer (A.E.V.C) ensures control and monitoring of the avionics ventilation system. The cargo ventilation controller controls and monitors the isolation valves and the extraction fan of the cargo ventilation system.

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SELF EXAMINATION Where does the come from ? A - From B - From C - From

LAV and GALLEYS ventilation air cabin distribution ducts. pack 1. pack 2.

What is the purpose of the Avionics Equipment Ventilation Computer ? A - To ensure control and monitoring of the avionics ventilation system. B - To control and monitor the cargo ventilation components. C - To control and monitor the packs. What is the purpose of the avionics ventilation system in the avionics bay ? A - To ventilate the avionics equipment. B - To ensure the heating of the avionics bay. C - To avoid avionics bay structural damage.

TMUVEN301 LEVEL 1

UFD1000

How is the FWD cargo compartment ventilated ? A - With avionics bay ambient air. B - With air coming directly from the pack outlet. C - With cabin ambient air.

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