Oberhof ski sports hall
The Skisporthalle Oberhof is the first cross-country skiing hall in Germany, in which cross-country skiing and biathlon can be practiced all year round . Through the sponsor Deutsche Kreditbank it was called DKB-Skisport-Halle until December 2018 , and since January 2019 LOTTO Thuringia Skisport-HALLE . The structure is located in Oberhof in Thuringia and was put into operation on September 1, 2009.
history
General
On August 24, 2009, the sports facility was opened by Federal Interior Minister Wolfgang Schäuble and Prime Minister Dieter Althaus . A circular course was laid out in it, which also includes climbs and descents over a length of 1754 meters.
The hall was built on the initiative of the German Ski Association and is also used by the national teams of Nordic disciplines as a training area. The operator is Oberhof-Sportstätten GmbH , in which the Landesentwicklungsgesellschaft Thüringen mbH holds a 51% stake, the district of Schmalkalden-Meiningen and the city of Oberhof each hold 24.5%. The building cost 14.4 million euros, which was shared by the federal government and the Free State of Thuringia. The district made a grant of 900,000 euros. The Free State of Thuringia bears an annual operating cost deficit of 700,000 euros.
Milestones
| date | Day | measure |
|---|---|---|
| 2008 | 0 | Contract signing construction contract |
| May 4, 2008 | 9 | First groundbreaking |
| June 2008 | 42 | Terrain profiling |
| July 2008 | 69 | Concrete support assembly |
| Aug 2008 | 88 | Ceiling mounting |
| Oct 2008 | 144 | topping out ceremony |
| Oct 2008 | 162 | Roof plate assembly |
| Oct 2008 | 167 | Installation of cooling floor |
| Jan. 2009 | 197 | Hall envelope closed |
| Apr. 2009 | 348 | First snow in the Westschleife (artificial snow shot outside) |
| May 2009 | 358 | The first snow is produced in the ski hall |
| June 30, 2009 | 407 | Handover of the building to the client |
| July 1, 2009 | 408 | Training start of the women's biathlon national team |
construction
The facility includes a two-storey functional building with a changing, ski service and catering area.
In the upper area there is a foyer, cash desk or information, visitor balcony, a sports shop and a café with bistro and pizzeria. There is also a service area, a monitoring room (timing and technical analysis), an evaluation room for trainers and athletes, a medical area (laboratory and performance diagnostics) and two technical rooms. The sanitary facilities, the operating room and all controls were accommodated on the ground floor. There is also direct access to the central area of the ski hall.
The hall itself consists of another four sections. These include the north-east loop, the large west loop, the double cross-country ski run and the speed power lap. The trails are easily accessible from the central area. In each training lap, a total of 1754 meters of running length is achieved on the route, which has to be covered twice, with inclines and descents of up to 12%.
A snow groomer is available to prepare the snow.
Since June 6, 2011, four competition-standardized shooting ranges for small caliber and air rifles have been available. They are located in a separate hall, which is directly connected to the previous hall (can be separated from the ski hall by a roller door and can therefore also be used separately) and is therefore connected to the cross-country ski trails. Biathlon can therefore be carried out regardless of the weather.
Technical specifications
Refrigeration
The cold is generated with screw or piston compressors for the cold brine of the floor cooling and the ventilation systems as well as a piston compressor for the cold brine of the snow production. The waste heat from the refrigeration machines is primarily used to defrost the periodically icing-up heat exchangers of the ventilation system and the snowmakers, and to heat the functional building.
Four brine circuits were provided to supply the individual cooling systems in the hall with cold and heat. (Cold brine underfloor cooling (tmax = −10 ° C); cold brine ventilation systems (tmax = −15 ° C); cold brine snow guns (tmax = −30 ° C); warm brine for defrosting the circulating air cooler (tmax = +40 ° C))
Cold distribution
The hall will u. a. cooled with 19 convection coolers.
The air is sucked in under the hall ceiling at the top of the circulating air cooler and cooled by heat exchangers from approx. -3 ° C to approx. -8 ° C. The air swells into the hall via textile air outlets. This ensures that no large air movements with the associated feeling of drafts occur in the snow area.
The hygienic outside air requirement is covered by five decentralized ventilation devices on the hall roof with a heat recovery rate of 70 to 80%, which are regulated by CO 2 sensors. In order to be able to cool the snow from below, a surface cooling system was provided in the floor over the entire hall area.
Snowmaking
Snow is generated by four snow generators, which are installed in the central area of the ski hall under the hall ceiling. These generators are supplied with pre-cooled water and compressed air from the refrigeration center. The snow water is cooled by a trickle cooler. The compressed air is provided by a speed-controlled compressor. The waste heat from the compressor is fed to the hot brine system via heat recovery.
The height of the central area of 8 meters was u. a. predetermined by the snow production, because these require a certain height of fall to produce artificial snow, which in turn corresponds to air circulation. It is planned that the snow will only be applied once a year. Thereafter, only preparation work on the snowpack including the distribution of new snow is planned.
Functional building
The waste heat from the refrigeration system is also used for heating and hot water for the functional building. The different hot brine circuits in the system are fed into a layer storage tank (oil cooler, screw compressor, hot brine hall). If the waste heat from the refrigeration system is no longer sufficient for heating, the deficits are covered by a heat pump system.
The social building is ventilated with a ventilation device with a heat recovery rate of approx. 80%. The air is also heated by the warm brine of the refrigeration system.
lighting
The lighting of the cross-country skiing area is designed for 500 lx in competition mode.
Video system
The area of the cross-country ski trail is covered by 34 dome cameras. On the one hand, the camera system offers a monitoring function with recording and, on the other hand, gives the trainers the opportunity to evaluate and analyze the recorded images with a correspondingly high quality.
Table overview
| Area | Data |
|---|---|
| Air temperature | approx. −3 to −4 degrees |
| Snow temperature | approx. -5 to -7 degrees |
| humidity | approx. 80-100% |
| Snow depth / edition | approx. 30 cm of pure artificial snow |
| Snowmaking equipment | 4 pieces in the central area / max. Capacity 32 tons in 24 hours (8 tons per device) |
| Trail preparation | Snow distribution and preparation |
| Terrain heights | between 810 and 830 m above sea level. |
| Single track width | 8.00 m |
| Double track width | 16.00 m |
| Central area width | 35.00 m |
| Total running distance | Up to 1754 m / Westschleife is covered in both directions, 44 meters in altitude are overcome |
| maximum slope | 12% high speed power lap / up to 11% in the Westschleife |
| Plot area | 69,000 m² |
| Total worked area | 46,000 m² (almost 6 soccer fields) |
| Total building area | 10,000 m² |
| Snow depot area | 1,100.00 m² |
| Building length | 400 m |
| Building width | 150 m |
| Insulating wall panels | 11,000 m² |
| Cooling loop length in integrated floor insulation | approx. 20 km |
| Heat recovery | Degree of heat recovery between 70 and 80% |
| construction time | 14 months |
| Energy supply for the entire system | Electricity - via medium voltage connection to the 10kv network of the local utility network |
| lighting | Up to 500 lux are possible e.g. B. for competitions and TV recordings, in normal operation 1/3 of the lighting is already sufficient with corresponding energy savings |
| Sound reinforcement | Music and announcement options in the entire hall area and in the functional building / PA loudspeaker system |
| Video system | The cross-country ski run area is covered by 34 dome cameras, which are displayed on 3 screens, 2 of which have 16 cameras each for the cross-country ski run area and one screen with 2 cameras for the shooting range. Recording option for monitoring e.g. B. in the event of accidents and problems, for trainers to evaluate and analyze technology and as a web cam for the Internet |
| Security technology | Safety lighting system in the event of a power failure / automatic fire alarm system / emergency exits with manual call points and emergency call stations |
competitive sport
The hall complex was originally built for competitive sports. The intention was to improve the quality of the training. Thanks to the new training facility, athletes can train on snow all year round. Long journeys or flights into the snowy areas can therefore be kept to a minimum.
Since July 1, 2009, biathletes, cross-country skiers and Nordic combined athletes of the German Ski Association have been regularly training in the hall.
In addition to German winter sports enthusiasts, the sports facility is also popular with foreign teams.
Tourism and popular sports
Ski equipment and clothing can be hired from a sports shop in the hall. This is also responsible for the ski service (waxing and grinding). Trained ski instructors are available for ski courses. A large changing area with separate changing rooms and showers is available for skiers.
The entry system is controlled by an electronic chip card on which the daily or hourly contingent is stored. The usage time to the minute is debited via this chip card. To do this, the card is held up to a terminal before entering the ski hall. The door opens automatically and the time is recorded. When leaving the ski hall, the card is held in front of a second terminal, the time is stopped and the door to the exit opens.
A large balcony with a view of the central area of the hall is available to visitors.
On the upper floor there is a café / bistro with a view of the central area and an outdoor area in front of the ski hall.
For active skiers, parking spaces are available at the ski hall. Additional parking spaces for visitors can be found along the entire access road to the ski sports hall.
Web links
Individual evidence
- ↑ Beate Kiesewalter-Henkel: Sale of the ski sports hall for one euro only postponed. In: insuedthueringen.de , June 25, 2011 (registration required)
Coordinates: 50 ° 42 ′ 32 " N , 10 ° 42 ′ 14" E