SA RA EA OA 換気設備の図面記号SA, RA, EA, OA – Symbols on Ventilation System Drawings

SA RA EA OA 換気設備の図面記号
SA RA EA OA は換気設備でよく出てくる図面記号です
下部に英訳がありますThe English text is below.

なんの略で、その意味は?
順に説明させて頂きます

SAとは

SAとは空調機から対象の部屋に送られる空気のことです

吹き出し口から出てくる空気です

SA(SUPPLY AIR) サプライエアー

詳しくは空調設備(空気調和設備) SAを参考にしてください

RAとは

RAとは対象の部屋から空調機に戻る空気のことです

RA(RETURN AIR)リターンエアー

詳しくは空調設備(空気調和設備) RAをご覧ください

EAとは

EAとは対象の部屋から出ていく空気のことです

換気扇などで外部に排出される空気です

EA(EXHAUST AIR)イグゾーストエアー

詳しくは空調設備(空気調和設備) EAをご覧ください

OAとは

OAとは外部の空気ということです

対象の部屋に外から取り入れる空気です

OA(OUTDOOR AIR)アウトドアエアー

詳しくは空調設備(空気調和設備) OAをご覧ください

SA RA EA OA まとめ

SA RA EA OAの意味を知っていると
空調設備の図面などを見た時に理解できると思います

AIによる英訳ですThis has been translated into English by AI.
SA, RA, EA, OA – Symbols on Ventilation System Drawings
SA, RA, EA, and OA are commonly used symbols in ventilation system drawings.

What do they stand for, and what do they mean?
Let me explain each of them in order.

What is SA?

SA refers to the air supplied from the air conditioning unit to the target room.
It is the air coming out from the supply outlet.

SA stands for SUPPLY AIR.

For more details, please refer to
Air Conditioning System: SA

What is RA?

RA refers to the air returning to the air conditioning unit from the target room.
RA stands for RETURN AIR.

For more information, see
Air Conditioning System: RA

What is EA?

EA refers to the air that exits the room.
It is the air that is discharged outside through ventilation fans or similar systems.

EA stands for EXHAUST AIR.

For more details, check
Air Conditioning System: EA

What is OA?

OA refers to outside air.
It is the air brought in from the outside into the room.

OA stands for OUTDOOR AIR.

For more information, visit
Air Conditioning System: OA

Summary of SA, RA, EA, and OA

By understanding the meanings of SA, RA, EA, and OA, you’ll be able to read and comprehend air conditioning system drawings more easily.