High Quality Solar Energy Water Heaters Wanted

Evacuated Tube Technology

�         Three-Layer Evacuated Tube

o   Metal Insulation Layer - should be Copper

o   Absorption Layer Should be stainless steel & AI-N-AI Enameled Mirror. Anti-corrosion and Anti-oxidation

o   Anti-reflection Layer (AI-N-AI) - Ensure high absorption rate and low emission rate by reducing reflection

�         Should work with hard water with hardness up to 600 ppm

�         Should work when overheated tank height is 1.3m from roof

�         Number of Tubes - 15

Circulation Type: Thermosyphon or better technology

Hot Water Temperature: 60 degree centigrade or better

Glass Tube Quality Requirements

�         Should high quality tubes made from double-walled hard borosilicate glass with min 1.6mm thickness

�         Inner coating of tubes should consists of copper, stainless steel and aluminum nitride layers

�         Should withstand high impact from hail storms

�         Should not choke or clog

�         Should heat water to  a very high temperature

�         Hot water should be available even on partially cloudy days

PUF Insulation

�         Should ensure that the heat generated by the water heater is retained for long hours

�         Overnight Temp drop should not be less than 5 degree centigrade

Tank

�         SS304 2B Grade Stainless Steel Tank with Zincalume (Zinc Alume Steel) Outer Cladding

�         Automated TIG welding for consistent welding and superior leak-proof joints

�         Enhanced performance in costal climatic conditions

�         Capacity 100 Litres or higher

Anode Protection: Magnesium/Aluminum Alloy

Support Structure

�         Strong and Light Weight made of Aluminum

�         Corrosion-Free