Two Circuit System

Bosch Solar Water Heater Thermosiphon solar systems are completely passive and without pumps and controllers in the solar circle. The systems rely on buoyancy effects to circulate heat from the collectors to a storage tank. Sunlight heats the water within the collector, which then rises up due to buoyancy into insulated storage tank above. The cold water from the bottom of the tank enters the collector to repeat the process.
 
 

Overview

In 2-circuit

Bosch Solar Water Heater Two tanks are assembled concentric to each other in a 2 circuit system. Outer tank is filled with mineral water which is used for circulation in the collectors and the inner tank is filled with hard water. Heat exchanger principle is used to heat up the water. The 2 circuit tank is the best technology for water with hardness <500 ppm.

The mineral water flows in the collectors and heats up. This heated water which is stored in the outer tank heats the hard water stored in the inner tank. The heated water in the inner tank is supplied at the taps.

Bosch Solar Water Heater This storage tank can be installed with a Non-Pressurized system and a Pressurized system.

In a Non-Pressurized system water at tap is at atmospheric pressure which is around 1 bar.

The pressurized systems are used when the hot water at tap is required at a higher pressure than the atmospheric pressure. This pressure in controlled at 3 Bar. This variant is required in luxury bathrooms with Jacuzzi, bath tub and multiple showers.


  • Enamel coating protects the scale formation in the tank due to chlorides and salts in hard water.
  • The 2 circuit methodology helps in protecting the collector copper pipes from blocking due to sedimentation.
  • Bosch Solar Water Heater The pressurized variant gives an advantage in luxury bathrooms which are equipped with Jacuzzi, multiple showers etc.
  • Conventional energy cost saving.
  • Different system sizes offered to assure varying warm water demands.
  • Bosch Solar Water Heater 25% higher storage capacity per collector
  • High flexibility.
  • Easy installation which save time as well.
  • Aluminium body of the collector protects it from rusting due to weather change.
  • Environmentally-friendly-reduced CO2 emissions.
  • Bosch Solar Water Heater Best system for water quality with hardness <500 ppm and chlorides <250 ppm