Tungsten-Molybdenum Production Workshop Ventilation and Cooling Project

Project Overview

This project is designed for a tungsten-molybdenum production workshop, classified as a semi-open industrial facility. The workshop features extensive horizontal space but limited vertical height, with a building structure that significantly restricts natural airflow. The operational area involves multiple heat sources: high-intensity thermal energy emitted continuously by metal smelting equipment and additional heat generated by densely distributed workers during dynamic operations, collectively creating a complex high-temperature environment. Traditional compressed refrigeration air conditioning systems face challenges in such conditions due to high energy consumption. Therefore, evaporative cooling technology has been adopted as an ideal solution, effectively addressing the complex heat load while significantly reducing energy consumption.

Operational Design

The system employs 76 Aolan Duo-series evaporative air coolers installed across the 2nd to 5th floors of the workshop. Based on equipment layout and worker movement analysis, each cooler is equipped with a directional air supply duct system to implement targeted cooling for specific workstations. Additionally, six negative-pressure fans are deployed in each operational unit to create forced convective airflow, efficiently expelling hot air and enhancing the synergistic performance of the ventilation and cooling system.

Performance Results

The semi-open workshop design incorporates seasonal optimization: evaporative cooling (wet mode) is activated in spring, summer, and autumn, while the system remains idle during winter. Since its commissioning in 2024, the equipment has demonstrated stable operation and excellent performance post-system debugging and optimization. Field measurements confirm that the air outlet temperature of the coolers is consistently maintained at 29–30°C, with an 8–10°C temperature reduction in work areas. All indicators meet energy-saving retrofit targets, achieving significant energy efficiency outcomes.