Calculators – Air Energy Audit

Air Energy Audit Calculators

⚡Input Parameters

Motor Rated Power (kW)

Annual Operating Hours (hrs/yr)

Average Load Factor (%)

Electricity Tariff ($/kWh)

Estimated System Leak Rate (%)

Audit & Optimization Budget ($)

Results

Estimated energy savings and return on investment.

Annual Energy

3723000

kWh

Annual Cost

446760.00

Leak Cost

111690.00

Recoverable Savings

83767.50

Payback

0.9

months

📊 Receiver & Test Data

Receiver Volume (Liters / m³)

Starting Pressure (bar(g))

Ending Pressure (bar(g))

Fill Time (seconds)

Atmospheric Pressure (bar)

Free Air Delivery

Calculated from the receiver pump-up test according to ISO 1217.

Free Air Delivery

0.000

m³/min

Free Air Delivery

0.00

l/s

Free Air Delivery

0.00

cfm

Based on receiver pump-up test (ISO 1217).

📏 Pipe & Flow

Flow

Pipe Inner Diameter

Pipe Length (m)

System Pressure (bar(g))

Velocity & ΔP

Calculated pipe velocity and pressure drop.

Velocity

0.00

m/s

Pressure Drop

0.0000

bar

ΔP (psi)

0.000

🟢 Velocity is within the recommended range.

💧 Inlet Conditions

Enter compressor flow and inlet air conditions to estimate the condensate load.

Compressor Flow

Inlet Air Temperature (°C)

Relative Humidity (%)

Operating Hours (hr/day)

💧 Condensate Load

Estimated condensate generated during compressor operation.

Liters/day

0.00

LITERS/DAY

Liters/week

0.00

LITERS/WEEK

Liters/year

0.0

LITERS/YEAR

For dryer & drain sizing.

⚙️ Specific Power

Calculate compressor specific power from power consumption and compressor flow.

Power (kW)

Flow

📊 Results

Compressor specific power performance.

kW per m³/min

13.243

kW / m³/min

kW per 100 cfm

37.500

kW / 100 cfm

🔴 Poor (>9)

💰 Life-Cycle Cost

Calculate the total ownership cost of a compressor over its operating life.

Purchase Cost ($)

Power (kW)

Annual Operating Hours

Load Factor (%)

Tariff ($/kWh)

Maintenance ($/year)

Analysis Period (years)

📈 Ownership Cost

Estimated total cost of owning and operating the compressor over the selected period.

Total Cost Over Period

750140

Annual Energy Cost: $67,014

🕳️ Leak Parameters

Enter leak and operating parameters to estimate compressed air leakage and its annual impact.

Orifice Diameter

Pressure (bar(g))

Number of Leaks

Operating Hours/year

Tariff ($/kWh)

Specific Power (kW/cfm)

CO₂ Factor (kg/kWh)

💸 Leakage Impact

Estimated energy, cost and CO₂ impact caused by compressed air leakage.

CFM Lost

0.00

CFM

Annual Cost

CO₂ Impact: 0.00 metric tons/year

🌀 Surge Data

Actual Flow

Surge Flow (limit)

⚠️ Surge Margin

Enter the Actual Flow and Surge Flow limit, then click Calculate Margin to see the result.

Actual Flow 0 cfm

Surge Flow (limit) 0 cfm

Margin

0.0%

🔁 Pressure Converter

Value

📐 Converted Values

Enter a pressure value, select the unit, and click Convert to see all converted values.

bar 1.0000

psi 14.5038

kPa 100.0000

MPa 0.1000

kg/cm² 1.0197

💨 Flow Converter

Value

From Unit

To Unit

📊 Result

Enter a flow value, select the From and To units, then click Convert to see the result.

Converted Value

2.8317 m³/min

🔋 Compressor Power Estimate

Flow (inlet)

Inlet Pressure (bar(g))

bar(g)

Discharge Pressure (bar(g))

bar(g)

Isentropic Efficiency (%)

Specific Heat Ratio (k)

⚡ Estimated Power

Enter the compressor operating data and click Estimate Power to calculate the estimated compressor power.

Power 63.47 kW

Power 85.12 HP

📦 Receiver Sizing

Flow (FAD)

Pressure Band (bar)

bar

Compressor Response Time (sec)

sec

📐 Recommended Volume

Enter the FAD flow, pressure band and compressor response time, then click Size Receiver.

m³ 3.377 m³

Liters 3377 L

Based on FAD, pressure band and response time.