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Tank-systems-emptying

Tank emptying facilities

The collection tank Drain Box allows to realize emptying systems innovative avoiding overheating and air inclusions in solar thermal systems that can cause malfunctions.

Drain Box allows you to drain up to 50 m² collector in a central collection tank. It 'easy to install montatandolo directly below the collector field. It can be combined with recirculating pumps of common type.

Il tank emptying facilities reduces maintenance costs and ensures a safe and stable operation of the solar system.

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Drain-box

No malfunctions caused by air

The degradation processes in the closed circuit forming gas. These gases can cause malfunctions solvable only by recourse to specialized personnel and then extra time and expense. Even in plants Drain Back may create air, but this does not create problems because the plant emptying can work in the presence of air.

Longer glycol and plant

High temperatures in the system cause aging of glycol and lower the yield of the system. The pH of the fluid is altered becoming more corrosive to the plant. With Drain Back system, you do not have stagnation glycol, as the system is stopped collectors are empty. In this way it ensures a longer life of the plant and its components.

Energy saving night

The system Drain Back allows also a considerable saving on electricity: during the night, in fact, it is not necessary to dispose of the excess energy, therefore, is not used electrical energy normally necessary for night cooling.

How does the Drain back system function?

solar system at rest


Solar system at rest

When it is cloudy, or the plant is not in operation,
all the fluid remains inside the tank and SolBox in the collectors are empty.

Solar system in operation

Solar system in operation

In the presence of solar radiation,
the system starts automatically and the fluid is pushed into the manifolds.

Tank completely hot

Tank completely hot

Upon reaching the desired temperature in the accumulation or no solar energy,
fluid flows from the collectors to the tank without SolBox evaporate.

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The innovative patented protection Drain Back for solar prevents overheating of the system which can cause malfunction and may require the intervention of specialized personnel with consequent waste of time and money. When the solar system reaches its maximum temperature, the fluid inside the collector drains into the tank Drain Box.

Emptying occurs even in cases of system off or at rest. In this way there is the danger that the mixture of brine into the collectors suffer deterioration due to the high temperatures. When temperatures return to normal, the circulation pump starts pushing again the heat transfer fluid in the solar system.

large plant system emptying

Drain Box with solar panels plans

A solar emptying requires solar collectors suitable for this type of applications. The flat solar collectors FKA can be perfectly combined with a facility to drain Drain Back.

drain box Features
Surface area (m2) 0÷ 50
Capacity 40 liters
Attacks 2x1
Insulation (mm) 100
Max pressure (bar) 6
Dimensions H950 x ø550
Weight Kg 23

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Rossato Group Srl
Headquarters: Via del Murillo, km 3.500 - 04013 Sermoneta LT - Italy
registered address via Migliara 49, No. 9 - 04016 Sabaudia LT - Italy
Cap. Soc. € 119.900,00 iv - n. LT-107494 REA - VAT-CF IT01745300598

Timetables
From Monday to Friday
Morning 8: 30 - 12: 30
Afternoon 13: 30 - 17: 30