Mass Flow Unit Conversion Calculator: Tons per Day (TPD) to Kilograms per Hour (kg/h)

Engineers, plant managers, and process engineers can precisely convert Tons per Day (TPD) to Kilograms per Hour (kg/h) using our Flow Unit Conversion Calculator. In sectors like cement, mining, wastewater treatment, and chemical processing, where daily throughput often has to be converted into hourly flow rates for equipment sizing, monitoring, and control, this conversion is particularly beneficial.

Definition: Tons per Day (TPD)

A large-scale measure of the total mass of a chemical processed during a 24-hour period, Tons per Day (TPD) Industrial production, mineral processing, and environmental systems all make frequent use of it. One metric tonne is 1,000 kg.

Key Applications of Tons per Day (TPD):

• Daily total material handling at quarries, cement mills, and mines.
• Reporting production rates for inventory control and process optimization.
• Estimating biomass generation, sludge, or waste in treatment plants.
• Heavy industries’ long-term planning and equipment use study.

Definition: Kilograms per Hour (kg/h)

A metric unit, kilograms per hour (kg/h) denotes the mass flow rate of material per hour. Ideal for real-time flow control, automation, and precision dosing systems in continuous or batch processes, it offers better resolution.

Key Applications of Kilograms per Hour (kg/h):

• Monitoring flow in continuous production lines.
• Batch control systems for feeding, mixing, or blending operations.
• Setpoint configuration and mass-based flow meter calibration.
• Process control integration with SCADA, DCS, or PLC systems.

Formula for TPD to kg/h Conversion

To convert Tons per Day (TPD) to Kilograms per Hour (kg/h), use the following formula with a fixed conversion factor:

Flow in kg/h = Flow in TPD × 41.6667

Here, the factor 41.6667 is derived from:

1 metric ton = 1,000 kilograms

1 day = 24 hours
So, 1 TPD = 1,000 ÷ 24 = 41.6667 kg/h

Example Calculation

If your plant processes 75 TPD:  To convert to kg/h:

75 × 41.6667 = 3,125 kg/h

So, a flow rate of 75 TPD equals 3,125 kg/h.

Quick Reference Conversion Table

Uses of TPD to kg/h Conversion

• Process Engineering: In automated systems, it allows exact flow control, dosing, and instrument calibration.
• Production Reporting: Lets plant teams change management and compliance daily and hourly reporting forms.
• Based on hourly demand, helps to choose pumps, feeders, conveyors, and other equipment.
• SCADA/PLC Configuration: Uses standard metric units to assist in real-time flow monitoring and alarm setting.
• Data Normalization: Helps to standardize projects with partners or vendors employing various flow units.

Whether your field is plant design, operations, or data analysis, this transformation helps to match dynamic, hour-based process controls with large-scale daily throughput numbers.

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