Industrial Ventilation Systems

Overview

Engineering reference data for Industrial Ventilation Systems in HVAC systems.

Key Formulas

Sensible Heat

$Q = \dot{m} c_p \Delta T$

Heat causing temperature change.

Latent Heat

$Q = \dot{m} h_{fg} \Delta\omega$

Heat causing moisture change.

COP (Cooling)

$COP = Q_c / W$

Coefficient of performance.

Variables

Symbol	Description	Unit
$Q$	Heat transfer	W
$\dot{m}$	Mass flow rate	kg/s
$c_p$	Specific heat of air	J/(kg·K)
$\Delta T$	Temperature difference	K

System Types Comparison

The suitability of different ventilation system types varies based on industrial application requirements. The following table provides a quick selection guide for principles in industrial environments.

Key System Definitions:

• Variable Air Volume (VAV): The supply air temperature remains constant, but the volume of air delivered varies to meet the load.
• Constant Air Volume (CAV): The volume of supply air remains constant, but its temperature varies to meet the load. These systems are becoming less common in new buildings as VAV systems offer closer temperature control, lower energy consumption, and reduced noise at lower fan speeds.

Interactive Charts

References

• Original Source