Heat Storage

Drain-back systems

The foremost “Achilles’ heel” of closed-loop, antifreeze-based solar thermal systems is what to do with excess solar heat in summer. Simply turning off the collector circulator if the storage tank reaches a high limit can cause rapid degradation of glycol-based antifreeze fluids within the collector. It can also cause steam flash in the collector array and the opening of the collector circuit pressure relief valve.

Energy Storage - The Missing Link

Storage has been considered the “missing link in renewables; wind and solar have challenges, and geo-thermal can lose it’s charge during a long cold winter. The solution; meld solar with storage, add a modern heat pump and gain the multiplier advantage know as “Coefficient of Performance (COP). Heating and cooling costs suddenly drop by 2, 3, even 4 times, and the benefit is not just in dollars; the carbon footprint is proportionately reduced. A number of independent voices have openly stated that this link will make heating and cooling with heat pumps the new normal.

Energy Storage Many Shapes, Sizes, and Mechanisms

“Battery” is another name for “storage”. The name allows us to think of additional possible solutions and opportunities. Electrical power generated by wind turbines and photovoltaic cells can be stored in a relatively low voltage DC battery. The battery charge is later converted to usable power – normally AC; usually with some lost in the transforming stages. Solar thermal energy can also be stored in a “battery”; a battery filled with water, rocks, clay, or sand all have demonstrated that storage capacity. The advent of high efficiency heat pumps is a game changer; using some mechanical/electrical power, the stored heat energy can be used to provide sufficient heating and cooling for most applications. Even low grade heat can be converted, and solar can make all the difference! Free heat from the sun, stored, conditioned and distributed is what 24 HOUR SOLAR is all about.