1. What is Diesel Consumption per Hour for kVA Generator?

Definition: This calculator estimates the hourly diesel consumption of a generator based on its kVA rating, power factor, fuel rate, and efficiency.

Purpose: It helps in fuel budgeting, operational cost estimation, and generator performance analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q_f \) — Diesel consumption (liters per hour)
• \( kVA \) — Generator apparent power rating
• \( PF \) — Power factor (typically 0.8)
• \( Q_{f\_rate} \) — Fuel consumption rate (0.2-0.4 L/kWh)
• \( \eta \) — Generator efficiency (typically 0.85-0.95)

Explanation: The formula converts kVA to kW using power factor, calculates energy consumption, then adjusts for fuel rate and efficiency.

3. Importance of Diesel Consumption Calculation

Details: Accurate fuel consumption estimates are crucial for operational planning, cost control, and environmental impact assessment.

4. Using the Calculator

Tips: Enter the generator kVA rating, power factor (default 0.8), fuel rate (default 0.3 L/kWh), and efficiency (default 0.9). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical fuel rate for diesel generators?
A: Most diesel generators consume 0.2-0.4 liters per kWh, with 0.3 L/kWh being a common average.

Q2: How does power factor affect consumption?
A: Lower power factors (below 0.8) increase apparent power (kVA) relative to real power (kW), potentially increasing fuel use.

Q3: When would I change the efficiency value?
A: Adjust for older generators (0.8-0.85) or high-efficiency models (0.93-0.95). Check manufacturer specifications.

Q4: How accurate is this calculation?
A: It provides a good estimate, but actual consumption varies with load, altitude, temperature, and generator condition.

Q5: Does this include generator startup consumption?
A: No, this calculates steady-state operation. Startup typically consumes 2-3 times normal running fuel for a short period.