Closed Loop

The pressurized closed loop water/glycol system is the most reliable configuration for Solar Water Heaters.

This system has about $40 per year upkeep costs. There are no freezing concerns and overheating is rare and based on the size of the system, but is controlled with a simple heat dump system.
Advantages:

– Will not freeze                                                                                                                                                                                                                 – Uses a pressurized loop that circulates a food-grade safe glycol.
– Indirectly transfers heat from the glycol solution to your potable water and/or house heating system

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Some Areas or Graphics Reprinted with Permission: Silicon Solar Inc,  Copyright 2008-2009 All Rights Reserved  DogStar Solar Inc, Copyright 2009

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