Bochum · MARK 51°7

The chain of the place

1. 01

   Before: Cars were built here until 2014; the galleries of the Dannenbaum colliery lie below.

2. 02

   Warm water: Mine water at 27–28 °C comes up from 820 m deep.

3. 03

   Heat pumps: Heat pumps raise it to about 48 °C and a grid distributes it in the district.

4. 04

   Cooling: Water at 17 °C comes from 340 m and cools the buildings in summer.

5. 05

   The result: This is how the new MARK 51°7 district heats and cools, with about 3,200 t less CO₂ a year.

What is shown – why – for whom

Facilities and areas in the model

• Car plant

  From 1962 to December 2014 cars were built here. Afterwards the plant was demolished (hall simplified, position schematic).

• MARK 51°7

  The new district on 70 ha: logistics, research, offices and university. The buildings stand as in the surface model; before 2017 they are hidden.

• Hugo shaft: heat from 820 m

  Above the old Hugo shaft of the Dannenbaum colliery a borehole reaches about 820 m deep. The mine water there is 27–28 °C; heat pumps raise it to about 48 °C.

• Schiller shaft: cooling from 340 m

  The second borehole hit a gallery of the colliery at 340 m. The water there is about 17 °C and cools the buildings in summer.

• Heating and cooling grid

  A fifth-generation low-temperature grid distributes heating and cooling; storage tanks of 65,000 l each. About 3,200 t of CO₂ are saved per year (route schematic, start of operation not documented).

Processes in the model

How a district can use the model

• District and supply

  Boreholes, heat pumps, grid and buildings in one picture: the model shows where the heat comes from and where it goes – from the Hugo shaft into the district.

  Para quiénDevelopers, suppliers, building operations

• Municipality and structural change

  What becomes of a car plant? Time travel shows 1975, 2000, 2016 and 2025 from the same camera, until shafts and grid stand in the model in 2025. A picture for talks about land, new businesses and heat.

  Para quiénMunicipalities, economic development, chambers

• Schools and universities

  How can mine water be used for heating, what is a fifth-generation heat network? The five steps from ‘Before’ to ‘The result’ fly to each part, and it lights up.

  Para quiénTeachers, geothermal and building services students

• Museums and industrial heritage

  Mining, car making, a new district: below the former plant lie the galleries of the Dannenbaum colliery, and on its site MARK 51°7 is being built. The history of the place jumps to every year.

  Para quiénMuseums, industrial heritage, exhibitions

• Public communication

  The winter evening in town shows when demand peaks: lights, cooking, heating. The thermal image of the houses shows where heat is used.

  Para quiénPublic relations, neighbours, users in the district

What you can change

What the model gives a district

• 01

  Looking underground

  The shafts with heat from 820 m and cooling from 340 m stand in the model in their place, with the temperatures of the mine water.

• 02

  Heating and cooling in one grid

  The fifth-generation grid distributes heating and cooling at low temperatures, with storage tanks of 65,000 l each and about 3,200 t less CO₂ a year.

• 03

  Structural change as a picture

  Colliery, car plant, district: time travel and the history of the place show how a district that heats and cools with the water of the old mine grows on industrial land.

• 04

  The city in the evening

  On a winter evening windows glow, chimney smoke rises and the thermal image shows where heat is used. At dusk the power runs from the substation to every house connection.

• 05

  In the browser and on the big screen

  A browser is enough, and large projections work too. Eleven more places and the map of Germany are part of the same model, designed by an artist and developer.

• 

  Düsseldorf Lausward

  A combined-cycle gas plant on the Rhine as a walkable model: power to the grid, heat via a 58 m storage tank and the district heating line into the media harbour and the city centre.

• 

  Rhineland lignite district

  The Rhineland lignite district as a walkable model: from the Garzweiler mine via conveyors, boilers and cooling towers into the 380 kV grid – while wind, sun and batteries grow on the reclaimed land.

• 

  Datteln 4

  Germany’s newest hard-coal plant as a walkable model: coal by ship on the Dortmund-Ems Canal, power for the grid and the railway, district heat as far as Recklinghausen.

• 

  Herdecke

  Three generations of storage at Lake Hengstey as a walkable model: the Koepchenwerk of 1930, the pumped-storage plant of 1989 and batteries since 2017 – the level in the reservoir follows sun, wind and demand.

• 

  Germany 1975–2025

  Fifty years of energy supply on one map: 365 sites, ten grid regions and the power of every hour – from two separate grids in 1975 to wind and sun in 2025.

• 

  Lingen

  The whole nuclear era in one place as a walkable model: the Lingen nuclear plant of 1968, the Emsland nuclear plant until April 2023, interim storage and dismantling – next to them gas, a battery and hydrogen.

• 

  Paderborn plateau

  One of the densest wind landscapes in North Rhine-Westphalia as a walkable model: every turbine with its year, from the 500 kW turbine of 1995 to the 6.2 MW turbine with a 169 m hub.

• 

  North Sea off Borkum

  The beginning of German offshore wind as a walkable model: twelve test turbines from 2009, a cluster of 284 turbines and about 1,660 MW, substation and converter platforms and the way ashore.