Industrial heat glossary.
24 terms explained.

The rate of heat transfer. Selection compares output under defined operating conditions, as well as model names.

Units of power. 1 MW = 1,000 kW. Power describes the rate of energy transfer.

A unit of energy. A constant 100 kW for 2 hours transfers 200 kWh. This is an illustrative calculation, not a HELIX performance claim.

Air volume or mass per unit time. A value in m³/h needs its measurement conditions, including temperature.

The pressure drop a fan must overcome through ducts and equipment. Airflow is evaluated together with operating pressure.

A device transferring heat between media. In indirect air heating, heat passes through a wall separating the streams.

Heating through a heat-transfer surface. Air quality also depends on equipment condition, tightness and system design.

Water content of a sample. On a wet basis, water mass is divided by total sample mass. Results require representative sampling and an agreed method.

The difference between percentage values. A change from 20% to 15% moisture is 5 percentage points.

An accounting measure: grain mass multiplied by moisture percentage points removed. It is not the mass of removed water. Comparisons need an agreed mass basis.

Grain mass processed per unit time under specified conditions. Crop, inlet and final moisture and the time boundary matter when comparing values.

Describes how close air is to saturation with water vapour at its temperature. It is evaluated alongside temperature in drying and ventilation.

Water content in fuel. Dry-basis and as-received values use different denominators and cannot be compared directly without a stated basis.

Mass of loose fuel per bulk volume, including spaces between particles. It informs storage, transport and feeding estimates.

The distribution of particle sizes. Feeding systems need the range and information on long pieces, fines and contaminants.

The proportion of residue after a defined test. State the test method and mass basis; ash behaviour is assessed separately.

A programmable logic controller. Executes configured control logic using input signals; capabilities depend on the model and project.

A human-machine interface for status and permitted parameter entry. A displayed button alone does not establish that a command is safe.

An electronic drive controlling a motor within an agreed range. Limits depend on the motor, machine and drive documentation.

A data communication protocol. Communication alone does not establish signal freshness or replace independent protective functions.

An agreed set of process parameters, with a defined version, change permissions and power-restoration behaviour.

Agreed on-site checks and adjustments. Acceptance criteria and permitted operating conditions are recorded in project documentation and protocols.

Combined costs over an agreed period: purchase, integration, operation and maintenance. Comparisons need the same calculation boundaries.

A description of requirements, initial data, work boundaries and acceptance criteria. Turns a broad request into a reviewable proposal.