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Heat and cold storage to increase energy efficiency

For an Austrian fruit juice manufacturer, in addition to the highest product quality, the responsible use of natural resources is paramount. An important building block for this is energy efficiency – the production should take place with the lowest possible energy consumption. The company therefore works consistently to avoid heat loss and to use previously “wasted” waste heat.

For this purpose, two Haase containers were integrated into the water supply. For this purpose, heat is extracted from the 19 ° C cold process water by a heat pump and pumped back into the cold storage at a temperature of 12 ° C. With the energy gained, the 86 ° C hot water from the return of the production process is heated by approx. 7 ° C and temporarily stored in the Haase hot water tank until it is used. The medium heated to 93 ° C is then used for several different hot water lines, for example for disinfection or cleaning processes.

  • Both the cold and the hot water tank were partially prefabricated in the Großröhrsdorf factory.
    Both the cold and the hot water tank were partially prefabricated in the Großröhrsdorf factory.
  • With a volume of 21,700 liters each, the outer diameter of both storage tanks is 2.50 m at a height of 6.65 m.
    With a volume of 21,700 liters each, the outer diameter of both storage tanks is 2.50 m at a height of 6.65 m.
  • The containers were still insulated on site and equipped with the necessary sensors.
    The containers were still insulated on site and equipped with the necessary sensors.
  • The two Haase storage systems now help to further increase the energy efficiency of the manufacturing process.
    The two Haase storage systems now help to further increase the energy efficiency of the manufacturing process.
Technical drawing of the hot water tank.
Technical drawing of the cold water tank.

Haase flat bottom tanks for earthquake zones

We delivered two factory-made flat bottom tanks for the logistics center of a nationwide retail chain in Koblenz. Engine oil is stored in them, which is used for the connected cogeneration unit.
The planning company commissioned by the operator had taken into account right from the start that Koblenz was located in earthquake zone 1 and that the storage tanks for water-polluting liquids must also have the appropriate approval. Other requirements for the flat-bottom tanks were double-walled, high temperature resistance and long-term resistance to the medium. The switchover option between the tanks enables the CHP unit to run uninterrupted even during an oil change.

  • Flat-bottom tanks for engine oil approved in earthquake zones.
    Flat-bottom tanks for engine oil approved in earthquake zones.
  • The tanks can be set up in earthquake zones using a design-approved floor anchoring bracket.
    The tanks can be set up in earthquake zones using a design-approved floor anchoring bracket.

Storage tank for condensate from a CHP

The condensate generated in a combined heat and power plant is safely collected in the GRP storage tank.

  • The underground storage tank Poly 101 SV C3 tank was delivered ready for connection.
    The underground storage tank Poly 101 SV C3 tank was delivered ready for connection.
  • The connections were arranged at the customer's request.
    The connections were arranged at the customer’s request.
  • Technical drawing of the underground storage tank for condensat from CHP.
    Technical drawing of the underground storage tank for condensat from CHP.

Frankfurter brewery favorizes GRP separator

Frankfurter Brauhaus GmbH has renewed its light liquid and grease separators and will use glass fiber reinforced plastic (GRP) for these systems in the future.
The brewery in Frankfurt (Oder) belongs together with the Feldschlößchen brewery in Dresden and the Gilde brewery in Hanover to TCB-Beteiligungsgesellschaft mbH and ranks among the top ten brewery groups in Germany. The products are not only successfully sold under the name “Frankfurter”, but also private labels for large retail chains.

The new light liquid separator from Haase cleans, among other things, the wastewater from the forklift washroom. The grease separator for the factory canteen prevents grease from getting into the drainage network. In contrast to the products made of concrete, the GRP separators are corrosion-free and permanently sealed without any additional coating. Since the shaft also consists of the chemically resistant material, the beer manufacturer can look into a safe future without expensive renovation costs.

Thanks to the close cooperation with the construction company Böttner and the specialist office for environmental technology FMK, the Frankfurt brewery could be offered an all-round carefree package, from planning the separator to delivery and installation to initial commissioning and specialist training.

  • Frankfurter Brauhaus GmbH relies on an oil and fat separator from Haase.
    Frankfurter Brauhaus GmbH relies on an oil and fat separator from Haase.
  • The fat separator for the factory canteen prevents grease from getting into the drainage network.
    The fat separator for the factory canteen prevents grease from getting into the drainage network.
  • The high chemical resistance of GRP also applies to the shaft area from the separator and keeps it permanently sealed.
    The high chemical resistance of GRP also applies to the shaft area from the separator and keeps it permanently sealed.
  • The GRP separators are contrary to the separators of concrete without further coating corrosion-free and permanently sealed.
    The GRP separators are contrary to the separators of concrete without further coating corrosion-free and permanently sealed.

Underground storage tank for drill emulsion

Leakage-monitored and double-walled storage tank made of GRP for the safe underground storage of drill emulsion and other water-polluting liquids.

  • Haase storage tanks are delivered ready for connection to the construction site.
    Haase storage tanks are delivered ready for connection to the construction site.
  • Equipment variant of the underground storage tank for drilling emulsion.
    Equipment variant of the underground storage tank for drilling emulsion.
  • Technical drawing of the underground storage tank for drill emulsion.
    Technical drawing of the underground storage tank for drill emulsion.

Oil smell in the basement? Not with Haase heating oil tanks!

Many operators of a tank system know this:
The heating oil tanks made of polyethylene (PE) are not old at all, they actually still look good, are liquid-tight and even the drip pan is still in order. Nevertheless, the smell of heating oil has become unbearable not only in the tank room, but throughout the house. For our Haase customer from a small Saxon town, the switch to GRP tanks was therefore obvious. So he could be sure that the smell problem is a thing of the past once and for all. In the tank room there is now a container with a usable volume of 4,900 liters.

Due to the old PE tanks, the smell of heating oil can spread throughout the house.

Although typical signs of aging of PE tanks (deformation, material fatigue, discoloration) are not yet visible: after a few years, the smell coming from the tank was no longer acceptable to the house residents. So what to do?

The PE tanks are properly disposed of by a Haase partner.

The existing heating oil was pumped out and stored temporarily. Afterwards, the old tanks could be cut, cleaned and disposed of properly. The operator received proof of this.

The Haase basement tank can be installed in any basement.

Here the inner wall of the tank is lifted into the installation room through the hatch. Haase basement tanks are delivered in individual parts and then assembled on site. Narrow entrances are therefore not a problem.

Finished with leak detector, so the Haase basement tank can now be filled again.

The double-walled tank is reconnected to the heating system, the tightness is automatically monitored and the intermediate oil is pumped back – done!
But the most important thing: nothing smells here permanently!

Gutters and pump wells lined with GRP

Keller & Bohacek GmbH & Co. KG, a medium-sized company in the chemical industry based in Düsseldorf, has been involved in the development, manufacture and sale of specialty chemicals for a wide variety of applications for decades.
The company always pursues the goal of being able to respond individually and very flexibly to customer requests based on the latest technologies in development and production. To meet this requirement, part of the production was recently completely rebuilt. Devices made of GRP (glass fiber reinforced plastic) have been used in the company for a long time to mix the chemical components. The reason for this is the high media resistance of the material to aggressive liquids. So it was obvious that the drainage channels and pump wells should also be made from this permanently sealed material.

  • Gutters and pump sumps are lined with GRP.
    Gutters and pump sumps are lined with GRP.
  • Lining of Haase with GRP nub laminate.
    Lining of Haase with GRP nub laminate.
  • GRP panels compensate for the unevenness of the surface.
    GRP panels compensate for the unevenness of the surface.
  • Butt edges were permanently sealed together.
    Butt edges were permanently sealed together.

Storage tank for fecal matter and domestic waste water

  • The underground storage tank Poly 51 SI C has a usable volume of 5,000 liters.
    The underground storage tank Poly 51 SI C has a usable volume of 5,000 liters.
  • The type and arrangement of fittings and connections could be freely determined by the customer.
    The type and arrangement of fittings and connections could be freely determined by the customer.
  • The height of the liquid-tight manhole made of GRP could already be made in the factory.
    The height of the liquid-tight manhole made of GRP could already be made in the factory.
  • Technical drawing of the underground storage tank for fecal matter and domestic waste water.
    Technical drawing of the underground storage tank for fecal matter and domestic waste water.

Yearly heat recovery over 9,000 MWh

The Haase hot water tank has a volume of 79,000 liters.

79 m³ hot water tank for Germany’s largest hotel laundry
The Haase hot water tank has a volume of 79,000 liters

The Greif Textile Mietsysteme company has set up the largest and most modern hotel laundry operation in Berlin, Germany. The aim was to incorporate latest proven technology  and reclaim thermal energy were economically viable. This will greatly reduce operating costs and therefore ensure the most competitive operation..

Hot water costs of such an industry represent a major part in the cost structure. To reduce these it was decided to invest in latest proven technology together with a sophisticated energy concept. This step would result in a very efficient and cost saving process. The big advantage, due to the much lower processing costs , is that the factory could now be located much closer to their customers  eliminating long  transport time and costs.

Technical drawing of the hot water tankr for a hotel laundry business in Berlin.

Heat recovery is an important part in reducing energy costs: Our 79,000l Haase tank is the center piece in the heat recovery system. It was designed to utilize waste heat from hot waste water coming from the washing machines and steam boiler, the air compressor system, flue recovery from steam boiler, as well as recovery from the building heating system. This recovered energy is then used for the continuous hot water supply to the five industrial washing machines.

The first process is the heat recovery from the hot wastewater. For this a 10,000l Haase tank accumulates the remaining thermal energy from the hot wastewater. This hot waste water is then pumped via a cross flow heat exchanger to heat up the incoming cold water using a variable pump to control the counter flow. This process increases the cold water temperature generally from 12°C to 45 °C , before it is transferred to our central thermal recovery tank. There the temperature is increased to 60° from other recovery sources.

In the first step, the wastewater is collected in a 10 m³ Haase flat-bottom tank. The waste heat from the wastewater increases the temperature of the process water from 12 °C to 45 °C before it flows into the hot water tank (79,000l). In the storage tank, the process water is then heated up to approx. 60 °C using various heat sources.

The waste water heat is conducted using a DN300 cross flow heat exchanger

The two air compressors constantly create heat at approx. 65 °C. This is transferred to the top part of our central  tank.

 In the middle part of the tank waste heat with approx. 60 °C is fed in from the return of the building heating (300 kW). The lower section of the storage tank is loaded with heat from the flue recovery from the 4 MW steam boiler, which is used for various processes in the laundry.

After the system was commissioned it was confirmed that the heat recovery functions as designed resulting in major cost savings since it increased the water temperature from 12 °C to  approximately 60 °C. This eliminates the use of a steam boiler for this temperature increase.

79m³ of hot water tank for a hotel laundry business.

Just a few weeks after commissioning the system, it could be confirmed that the saving targets have been met and even exceeded.

The steam boiler operates now with an efficiency of 95 %. By using the waste heat from the boiler and the compressed air generators, around 17,500 kWh per day can be saved; another 1,500 kWh/d results from the use of the return of the building heating. In the next stage of expansion, the waste heat from the boiler should raise the hot water temperature to 55 °C. The result of the thermal recovery system are daily savings of around 25,000 kWh.

Haase basement tank for all earthquake zones

Many homeowners and tank installers in Germany are often not even aware of this: Here too, in the seemingly safe heart of Europe, a large area is designated as an earthquake zone. So if you live in one of these areas and want to install a new tank for storing heating oil, you should make sure that it is also approved for the corresponding earthquake zone.

The Haase basement tanks can even be installed in earthquake zones.

The classification of the regions in the earthquake zones is illustrated by a map of the German Geo Research Center. If you are not sure whether your region is classified accordingly, you can carry out an online query for your place of residence here.
https://www.gfz-potsdam.de/din4149_erdbebenzonenabfrage/

Haase was the first tank manufacturer to prove the seismic safety of its tanks and received approval from the German Institute for Building Technology (DIBt). The necessary stability tests have once again shown what the material GRP can do: For most tank types, the double-walled design, which has been tried and tested for several decades, can be used without additional effort.

In earthquake zone 3, the highest in Germany, only an inexpensive non-slip mat has to be placed under the tank instead of the commonly used felt. If you want to install a tank in an earthquake-prone area, you should therefore have the corresponding approval from the German Institute for Building Technology (DIBt) presented for this tank.

The Haase basement tank can be set up in any earthquake zone in Germany.

As you can see, you see nothing: a double-walled Haase basement tank with anti-slip mat that was installed in an area of earthquake zone 3. The approval of the DIBt does not impose any further requirements.

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