Solar Water Heater

Solar Water Heater

Punarvi Energies Private Limited offers the Ultima™ ETC and FPC series of solar water heaters, engineered specifically for modern, high-end pressurized systems. Designed to meet the demands of residential, hospitality, and commercial applications, these systems deliver reliable, energy-efficient performance tailored to today’s advanced infrastructure needs.
Advantages
ETC Model
Evacuated Tube Collector (ETC) Solar Water Heating systems use triple-layered Borosilicate glass tubes designed for high efficiency, even in cold weather. The outer surface of the inner tube is coated with a selective absorbing material such as copper (Cu), aluminum (Al), or stainless steel (SS) wafers.

These coatings enhance solar radiation absorption and effectively transfer heat to the water inside the tubes. This advanced technology is highly cost-effective and provides rapid water heating performance.
FPC Non Pressurized Model
The Flat Plate Collector absorbs solar radiation through an insulated metallic outer box, which is covered with a transparent glass sheet on top. Inside, it houses selectively coated black metallic absorber plates with integrated riser tubes or channels that carry water. These absorber plates capture solar energy and transfer the heat to the water flowing through them.

This traditional Flat Plate Collector design typically uses copper tubes with selective coatings to enhance heat absorption. It is especially suitable for pressurized systems where a pressure pump regulates the flow between the cold water inlet and the solar storage tank.
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