Hot oil refineries and other industrial facilities can present hazards for process cooling equipment and personnel, creating hazardous working conditions. Evaporative coolers have dry-mist technology to cool down the work environment while keeping work spaces dry. The explosionproof coolers have sparkproof blades and enclosed motors to ensure no ignition risks within hazardous locations. The water tank contains two separate filters and three spray nozzles to cool the work environment for up to 8 hr. The portable cooling system also has a built-in automatic shutoff feature once the water reservoir is empty.