Solar Water Heater

Evacuated Tube Collectors combine the high efficiency performance of evacuated tubes with rapid heat transfer capacity of heat pipes to provide a collector that can operate efficiently in almost any climate providing hot water for residential or commercial solar water heating projects.

Powder Coated
Stainless Steel

WHY ETC?

Evacuated Tubes vs Flat Plate

FACTOR
EVALUATED
FLATE PLATE
COMMENTS
Cost of Collector
MODERATE
LOW
Comparing the purchase price of the collector alone is NOT useful. The final installed cost and expected annual energy output for the specific application should be considered in order to make a sound choice.
Installation Cost
MODERATE
HIGH
FP installation cost can be higher if hydraulic lift platform (cherry picker) is required due to the size and weight of the panel.
Component Weight
LIGHT
HEAVY
ET collector components are lightweight and can be carried up a ladder. Flat Plate is heavy single components so may require lift platform.
Low Temp Applications
GOOD
GOOD
FP collectors are suitable for domestic hot water applications (<600c />1400F) as heat loss at higher temperatures results in poor solar conversion efficiency.
High Temp Applications
GOOD
POOR
ET collectors are suitable for both domestic and industrial high temp applications (<1200c />2500F) with high solar conversion efficiency even at higher temperatures.
Cold Weather
GOOD
POOR
FP collectors perform poorly in cold conditions. ET collectors perform well in cold conditions due to the vacuum insulation.
Vertical Orientation
YES
YES
Both ET and FP collectors can be installation in the vertical orientation, but note also the installation angle requirements for the ET collector is 20-800 range.
Horizontal Orientation
NO
YES
ET collector can only be installed with the evacuated tubes in the up-down orientation, not left-right. FP can be installed in either orientation.
Installation Angle
20-800
0-900
Et must be 20-800 to ensure optimum heat pipe operations. FP can be installed at 00 (vertical) or 900 (flat), although these are not ideal for best solar exposure, as angle should ideally be close to latitude.
Hail Resistance
MODERATE
High
ET and FP can withstand hail of < 25mm / 1” in diameter, however FP is stronger.
Repairability
YES
NO
If a tube is damaged by extreme hail or branch failing on the roof, individual tubes can be replace. If a FP is damaged the whole panel must be replaced.
Limescale Susceptibility
GOOD
POOR
Because of the small diameter of the riser copper pipes in the FP collector, limescale may block the pipes more easily than the ET collector which has a large diameter header pipe.

GET IN TOUCH

 0674 256 7070,
sales@anantpower.in

 +91 898 423 3293
care@anantpower.in

 213, OCAC Tower, Acharya Vihar,
Bhubaneswar, Odisha, PIN : 751013

NEWSLETTER