ADH 12000


The quality and useful life of anti-corrosion painting is determined by several factors, and the pretreatment and protection of treated surfaces against moisture are the most important factors. Surfaces that have been blasted are completely unprotected against corrosion and must not be subjected to excessive humidity or to the risk of condensation.

The rate of corrosion is high above a certain value of the relative humidity – the critical humidity. Below the critical humidity the corrosion rate is negligible. The critical humidity is about 60%, but it should not exceed 50% in practical situations.

In practice, it has been found that dehumidification is a crucial factor for anti-corrosion painting. The cost of dehumidification is only approximately 4% of the total treatment cost of corrosion preventive painting of a ship’s tanks. Moreover, dehumidification is often a pre-requisite for the correct execution of anti-corrosion painting. This is especially crucial in the painting of blasted surface of a ship’s tanks.

SPEEDO Dehumidifier is engineered specially for internal tank blasting and coating operations in equatorial and tropical climate conditions. The unit also comes complete with a specially designed control panel and can be easily transported by crane or forklift.


Model No. ADH 12000-A ADH 12000-B
Air Flow Capacity 12000 CMH
Cooling Capacity 207000 Kcal/hr
Static Pressure 300mmAQ
Cooling Media Air Cool
Work Method 100% Refrigeration / 100% Condensation / 100% Heater
Refrigerant R22
Inlet Air Temperature 20°C to 40°C (±5°C)
Discharge Air Temperature & Relative Humidity 45% & below
Dew Point 10°C
Evaporator Coil Copper tube / Copper fin with Stainless Steel Casing Copper tube / Aluminium fin with Steel Frame
Condenser Coil Copper tube / Aluminium fin with Stainless Steel Casing Copper tube / Aluminium fin with Steel Frame
Control Panel Traditional Relay Control (IP55 Enclosure)
Compressor Capacity 45 KW
Condensor Motor 3 x 2.2 kw
Blower Motor 15 kw
Electric Heater 27 kw
Total Power Consumption 93.6 kw
Power Supply 380-415 V / 50HZ / 3 phase
Machine Structure Containerized
Outlet Connection 4 x Ø280mm
External Dimension

3800 x 2300 x 2500mm (L x W x H)


4.2 Ton