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The efficient option

AccuWIN
 

825 - 1500 Litres
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AccuWIN - heat accumulator

The efficient option

For wood gasification boilers in particular, it is important to temporarily store the excess energy produced. The AccuWIN (ACW) performs this task perfectly, helping to significantly extend the replenishment intervals of your boiler. Thanks to its energy-saving and environmentally friendly 100 mm ECO SKIN fleece insulation, the AccuWIN has up to 38% less accumulator losses than comparable products with soft foam insulation. The ACW is available in sizes with 825, 1,000 and 1.50 litres of usable storage capacity.

Boiler design

Fleece insulation X

Up to 38 per cent less storage loss as compared to soft foam insulation thanks to the energy-saving and environmentally friendly 100 mm fleece insulation.

Indicating thermometer X

3 display thermometers allow easy reading of the accumulator tank temperatures at the top, middle and bottom.

6/4” Connection X

Very little space required and suitable for niches due to the connections arranged at the front.

Hooked strip X

Simple and quick installation and also sleek visual appearance due to the simultaneous function of a cable duct.

Raised or deep-drawn connection pipes X

Best energy utilisation by extracting the heating water at the highest temperature level (top) and also loading the lower range that is not normally used.

Cogent to the smallest detail
 

  • Up to 38 per cent less storage loss as compared to soft foam insulation thanks to the energy-saving and environmentally friendly 100 mm fleece insulation.
     
  • 3 display thermometers allow easy reading of the accumulator tank temperatures at the top, middle and bottom.
     
  • Very little space required and suitable for niches due to the connections arranged at the front.
     
  • Simple and quick installation and also sleek visual appearance due to the simultaneous function of a cable duct.
     
  • Best energy utilisation by extracting the heating water at the highest temperature level (top) and also loading the lower range that is not normally used.

The advantages at a glance

+ Heat loading without auxiliary energy due to patented cascade solution

 

 

 

 

+ Optimum use of heat thanks to raised connection pipes

+ High-quality, environmentally friendly 100 mm ECO SKIN fleece insulation

AccuWIN - heat accumulator

Thanks to the upper connection pipe, water is only taken from the highest temperature level and sent to the heating system. The lower pipe only carries water from the coldest temperature zone to the heating boiler. This allows full use to be made of the entire accumulator volume.

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Produktanfrage

Loading the heat storage cascade

1/ Loading cascade accumulator

The first cascade accumulator is loaded using the accumulator load control system and hydraulic arrangement. Since only a little water needs to be heated, the energy can be extracted quickly. This also helps to reduce radiation losses.

2/ Loading second accumulator

If the temperature near the middle connection line reaches 45 °C, a valve opens and the second accumulator is loaded without auxiliary energy thanks to the thermal lift. At the same time, the bottom part of the first accumulator remains free, for example for energy from the solar heating system.

3/ Both accumulators have been heated through

Once sufficient energy is supplied, both accumulators are completely heated through.

Discharging the heat storage cascade

1/ Unloading first accumulator

When heat is needed, it is discharged from the first accumulator tank. This means that space is made available again in the lower area for the addition of new solar energy. The temperature is ideally stratified in both accumulators because the bottom connection is used for the return. So the second heat accumulator remains warm in the upper part.

2/ Unloading second accumulator

If the temperature in the first heat accumulator falls below that in the second, the heat is moved from the second to the first accumulator using a pump. The ideal heat stratification is therefore retained and all the stored energy can be used.

Other heat accumulators

Need more inspiration? Windhager offers a variety of solutions for hot water tanks and accumulator tanks that can be used flexibly. See for yourself!

Our heat accumulators at a glance

Technical data

The AccuWIN is available in a total of three different forms. 

Type   AccuWIN 825 AccuWIN 1000 AccuWIN 1500
Nominal content l 825 1,000 1,500
Diameter with/without insulation mm 990/790 990/790 1,200/1000
Height with/without insulation mm 1,940/1860 2,135/2050 2,235/2150
Overall height without insulation mm 1,905 2,090 2,270
Minimum room height mm 1,960 2,190 2,290
Weight with/without insulation kg 120/110 140/130 220/205
Supply and return connections Int. thr./Ext. thr. 6/4" int. thr. 6/4" int. thr. 6/4" int. thr.
Connection ports Int. thr./Ext. thr. 6/4" int. thr. 6/4" int. thr. 6/4" int. thr.
Max. permissible operating pressure of heating system bar 3 3 3