The Compact Thermosiphon Solar Water Heating System is a non-pressurized solar water heater that uses the natural thermosiphon principle to capture solar energy and deliver hot water without pumps or external power. It is built around a stainless steel 304 inner tank connected to glass evacuated tubes, with high-quality polyurethane insulation and a PVDF zinc-coated steel outer shell. The unit suits residential and commercial hot water applications across varied climate conditions.

The system is offered in four configurations under the ALT series: ALT 16, ALT 20, ALT 24 and ALT 30, with tank capacities ranging from 135 to 249 liters. The plug-in design simplifies installation, reduces operating cost, and supports continuous year-round hot water supply for housing projects, hotels, schools and small commercial buildings.

Technology: Evacuated tube thermosiphon (non-pressurized)

Models: ALT 16, ALT 20, ALT 24, ALT 30

Tank capacity: 135 L, 178 L, 200 L, 249 L respectively

Tubes per model: 16, 20, 24, 30

Tube dimensions: Ø58 mm x 1.8 m

Inner tank: Stainless steel 304

Outer tank: PVDF zinc-coated steel

Insulation: Polyurethane foam, 5 cm

Operating principle: Natural thermosiphon, no pumps required

Application: Residential and commercial hot water

Use cases: Housing projects, hotels, schools, small commercial buildings