RJM-ACH-001 | Rijomac ACH Calculator

RIJOMAC SYSTEM

Controlled Environment Engineering

RJM-ACH-001 v2.0

RJM-ACH-001 • Version 2.0 • Development

ACH Calculator

Project Input Calculation Result Report

1. Project Information

Project Name

Room / Area

Engineer

Date

Engineering Notes

ACH calculation for preliminary engineering. Verify final requirement with project specification, room function, contamination control, pressure cascade, and applicable standards.

2. Calculation Input

Calculation Mode Calculate ACH from Airflow Calculate Airflow from Target ACH Calculate Room Volume from Airflow & ACH

Room Type Reference Custom Office / Comfort Room General Laboratory Cleanroom ISO 8 Cleanroom ISO 7 Negative Pressure Isolation Room BSL-2 Laboratory Cold Storage / Cold Room

Length (m)

Width (m)

Height (m)

Manual Volume (m3)

Supply Airflow

Airflow Unit CFM m3/h L/s

Target ACH

Exhaust Airflow (optional)

Ready.

3. ACH Result

Room Volume-

Supply Airflow-

Calculated ACH-

Required Airflow-

Area	-
Target ACH	-
Airflow in CFM	-
Airflow in m3/h	-
Exhaust Airflow	-
Air Balance	-
Engineering Check	-

Target Achievement

-

Engineering Note:
ACH adalah indikator jumlah pergantian udara per jam. Nilai ACH harus dibaca bersama airflow pattern, filtration, pressure cascade, heat load, noise, dan balancing aktual.

4. Engineering Report

5. Room Type Reference Library

Room Type	Typical Preliminary ACH	Engineering Note
Office / Comfort Room	4-8 ACH	Untuk kenyamanan, load dan fresh air lebih dominan daripada ACH.
General Laboratory	6-12 ACH	Tergantung exhaust, safety, dan bahan yang digunakan.
Cleanroom ISO 8	10-25 ACH	Tergantung particle load, recovery time, dan supply diffuser.
Cleanroom ISO 7	30-60 ACH	Tergantung layout, process, filter HEPA, dan commissioning.
Negative Pressure Isolation	Min. 12 ACH	Perlu pressure cascade dan exhaust yang benar.
BSL-2 Laboratory	6-12 ACH	Tergantung biosafety risk assessment dan exhaust strategy.
Cold Storage / Cold Room	Air circulation based	Lebih fokus pada temperature uniformity, throw, dan product load.

RJM-ACH-001 v2.0 • Rijomac Engineering Center • ACH Calculator

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