HANDBOOK HVAC FORMULA
Practical Engineering Reference
RIJOMAC SYSTEM
Controlled Environment Engineering
KATA PENGANTAR
Banyak engineer mempelajari rumus HVAC saat pendidikan formal, namun tidak sedikit yang mengalami kesulitan ketika harus menerapkannya dalam proyek nyata di lapangan.
Handbook ini disusun sebagai panduan praktis yang berisi rumus-rumus penting HVAC yang sering digunakan dalam kegiatan desain, instalasi, commissioning, troubleshooting, optimasi, dan validasi sistem tata udara.
Fokus handbook ini bukan pada teori yang kompleks, melainkan pada pemahaman konsep dasar, penerapan rumus, serta contoh penggunaan dalam pekerjaan engineering sehari-hari.
Harapannya, handbook ini dapat menjadi referensi cepat bagi engineer, teknisi, supervisor, maupun praktisi yang terlibat dalam bidang HVAC, Cleanroom, Medical HVAC, Biosafety Laboratory, dan Dehumidification System.
BAGIAN I
AIRFLOW ENGINEERING
BAB 1 – AIRFLOW FUNDAMENTALS
- Airflow (CMH)
- Airflow (CFM)
- Konversi CFM ke CMH
- Konversi CMH ke CFM
BAB 2 – AIR CHANGE RATE (ACH)
- Rumus ACH
- Rumus Airflow dari ACH
- Perhitungan Volume Ruangan
- Contoh Perhitungan ACH
BAB 3 – FACE VELOCITY
- Face Velocity Filter
- Face Velocity HEPA
- Face Velocity Cooling Coil
- Face Velocity Diffuser
BAGIAN II
HEAT LOAD CALCULATION
BAB 4 – SENSIBLE HEAT
- Sensible Heat Fundamentals
- Sensible Cooling Load
- Airside Sensible Heat Calculation
BAB 5 – LATENT HEAT
- Latent Heat Fundamentals
- Moisture Load
- Latent Cooling Load
BAB 6 – TOTAL COOLING LOAD
- Total Heat
- Sensible Heat Ratio (SHR)
- Cooling Load Calculation
BAB 7 – OCCUPANCY LOAD
- Heat Load dari Manusia
- Aktivitas Penghuni
- Occupancy Heat Gain
BAB 8 – LIGHTING LOAD
- Heat Gain dari Lampu
- Lighting Power Density
- Cooling Impact
BAB 9 – EQUIPMENT LOAD
- Heat Gain dari Peralatan
- Motor Load
- Process Equipment Load
BAGIAN III
PSYCHROMETRICS
BAB 10 – RELATIVE HUMIDITY
- Konsep RH
- Pengaruh RH terhadap HVAC
BAB 11 – DEW POINT
- Dew Point Fundamentals
- Kondensasi
- Dew Point Control
BAB 12 – HUMIDITY RATIO
- Moisture Content
- Humidity Ratio Calculation
BAB 13 – ENTHALPY
- Total Heat Content
- Enthalpy Difference
BAB 14 – MOISTURE LOAD
- Moisture Source
- Moisture Calculation
BAB 15 – DEHUMIDIFICATION LOAD
- Moisture Removal
- Dehumidification Capacity
BAGIAN IV
COOLING COIL ENGINEERING
BAB 16 – COOLING CAPACITY
- Cooling Capacity Calculation
- Sensible & Latent Cooling
BAB 17 – CHILLED WATER FLOWRATE
- Chilled Water Flow Calculation
- Water Side Capacity
BAB 18 – DX COIL CALCULATION
- Refrigeration Capacity
- DX System Calculation
BAB 19 – COIL LEAVING AIR CONDITION
- Air Off Temperature
- Apparatus Dew Point (ADP)
- Coil Performance
BAGIAN V
FAN ENGINEERING
BAB 20 – FAN LAW
- Fan Law 1
- Fan Law 2
- Fan Law 3
BAB 21 – STATIC PRESSURE
- Static Pressure Fundamentals
- Pressure Loss
BAB 22 – TOTAL STATIC PRESSURE
- Pressure Drop Calculation
- System Resistance
BAB 23 – FAN POWER
- Fan Power Calculation
- Brake Horse Power (BHP)
BAB 24 – MOTOR POWER
- Motor Sizing
- Safety Factor
BAB 25 – FAN EFFICIENCY & FAN CURVE
- Fan Curve
- System Curve
- Operating Point
- Fan Efficiency
BAGIAN VI
FILTRATION ENGINEERING
BAB 26 – FILTER FACE VELOCITY
- Face Velocity Selection
- Filter Performance
BAB 27 – FILTER PRESSURE DROP
- Initial Resistance
- Final Resistance
BAB 28 – HEPA FILTER SIZING
- HEPA Airflow
- HEPA Area Calculation
BAB 29 – FILTER LOADING
- Dust Holding Capacity
- Loading Characteristics
BAB 30 – FILTER LIFE ESTIMATION
- Pressure Drop Trend
- Replacement Criteria
- Filter Life Analysis
BAGIAN VII
PRESSURE CASCADE ENGINEERING
BAB 31 – DIFFERENTIAL PRESSURE
- Differential Pressure Fundamentals
- Pressure Monitoring
BAB 32 – AIRFLOW OFFSET
- Supply vs Exhaust Airflow
- Offset Calculation
BAB 33 – POSITIVE PRESSURE ROOM
- Bubble Concept
- Positive Pressure Design
BAB 34 – NEGATIVE PRESSURE ROOM
- Sink Concept
- Containment Principle
BAB 35 – AIRLOCK CALCULATION
- Airlock Design
- Pressure Stabilization
BAGIAN VIII
DEHUMIDIFICATION ENGINEERING
BAB 36 – MOISTURE REMOVAL RATE
- Moisture Removal Calculation
- Water Extraction Rate
BAB 37 – DESICCANT DEHUMIDIFIER SELECTION
- Rotor Capacity
- Selection Method
BAB 38 – INFILTRATION MOISTURE LOAD
- Fresh Air Moisture
- Leakage Moisture
- Airlock Impact
BAB 39 – LOW DEW POINT APPLICATION
- Dry Room
- Lithium Battery Facility
- Low RH Process
BAGIAN IX
CLEANROOM ENGINEERING
BAB 40 – ISO AIRFLOW CALCULATION
- ISO Class Airflow
- Air Distribution
BAB 41 – RECOVERY TIME
- Recovery Performance
- Air Change Recovery
BAB 42 – HEPA COVERAGE RATIO
- Coverage Calculation
- Ceiling Coverage Analysis
BAB 43 – FAN FILTER UNIT (FFU) CALCULATION
- FFU Airflow
- FFU Quantity
- FFU Coverage Ratio
BAGIAN X
COMMISSIONING & VALIDATION
BAB 44 – AIRFLOW VERIFICATION
- Airflow Measurement
- Airflow Acceptance
BAB 45 – ACH VERIFICATION
- ACH Measurement
- ACH Validation
BAB 46 – PARTICLE COUNT CALCULATION
- ISO 14644-1
- Particle Concentration
BAB 47 – AIR VELOCITY TEST
- Velocity Mapping
- Uniformity Verification
BAB 48 – SMOKE TEST INTERPRETATION
- Airflow Visualization
- Containment Verification
LAMPIRAN
Lampiran A – Konversi Satuan HVAC
Lampiran B – Psychrometric Quick Guide
Lampiran C – HVAC Formula Cheat Sheet
Lampiran D – ACH Quick Reference
Lampiran E – Pressure Cascade Quick Reference
Lampiran F – Dew Point Quick Reference
Lampiran G – HVAC Engineering Calculator Table
Lampiran H – Field Survey & Commissioning Checklist
TENTANG PENULIS
Machfud
Founder – RIJOMAC SYSTEM
Controlled Environment Engineering
Spesialisasi:
- HVAC Engineering
- Cleanroom Engineering
- Medical HVAC
- Biosafety Laboratory
- Dehumidification System
- Commissioning & Validation
📧 rijomac.system@gmail.com
📱 0818-704-677
🌐 rijomac.blogspot.com
PENUTUP
Engineer yang baik tidak hanya menghafal rumus.
Engineer yang baik memahami kapan rumus digunakan, bagaimana asumsi dibuat, serta bagaimana hasil perhitungan diverifikasi di lapangan.
Rumus adalah alat.
Data adalah dasar.
Pengukuran adalah pembuktian.
Dan engineering judgement adalah kuncinya.
RIJOMAC SYSTEM
Controlled Environment Engineering
