EP1318366B1 - Piste de ski couverte et procédé d'opération de celle-ci - Google Patents

Piste de ski couverte et procédé d'opération de celle-ci Download PDF

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Publication number
EP1318366B1
EP1318366B1 EP02002668A EP02002668A EP1318366B1 EP 1318366 B1 EP1318366 B1 EP 1318366B1 EP 02002668 A EP02002668 A EP 02002668A EP 02002668 A EP02002668 A EP 02002668A EP 1318366 B1 EP1318366 B1 EP 1318366B1
Authority
EP
European Patent Office
Prior art keywords
snow
air
cooling
hall
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02002668A
Other languages
German (de)
English (en)
Other versions
EP1318366A1 (fr
Inventor
Herman D'hulster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stevens Koeltechnik NV
Allrounder Winter World & Co KG GmbH
Original Assignee
Stevens Koeltechnik NV
Allrounder Winter World & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stevens Koeltechnik NV, Allrounder Winter World & Co KG GmbH filed Critical Stevens Koeltechnik NV
Publication of EP1318366A1 publication Critical patent/EP1318366A1/fr
Application granted granted Critical
Publication of EP1318366B1 publication Critical patent/EP1318366B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
    • F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2303/00—Special arrangements or features for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Special arrangements or features for producing artificial snow
    • F25C2303/048—Snow making by using means for spraying water
    • F25C2303/0481—Snow making by using means for spraying water with the use of compressed air

Definitions

  • the invention relates to a snow sports hall with a snow piste arranged therein, which has a floor on which a snow layer is applied or can be applied, and with a refrigeration system which has a snow cooling device for cooling the snow layer.
  • the invention further relates to a method for operating such a snow sports hall.
  • Such a snow sports hall is known from the document US 5,381,668.
  • Snow sports halls are known, for example, from EP-B-0 378 636, US Pat. No. 5,102,044, US Pat. No. 5,241,830 and US Pat. No. 5,272,883. They have a hall-shaped housing in which a generally inclined snow slope is arranged. The profile of the snow slope is determined by a ground on which a snow layer is applied by means of snow cannons. Instead of snow cannons, water spraying devices can also be provided which spray water into the air above the snow track, which freezes on impact with the cold ground or snow layer already present (see US-A-5,241,830).
  • Such snow sports halls especially if the outside temperature is considerably above 0 ° C, a high energy consumption, even if their outer skin is well insulated.
  • a refrigeration system just so low that the resulting heat in the snow sports hall, caused by the persons therein, lamps, friction, etc., dissipated and the snow layer is prevented from melting.
  • This may be done by keeping the temperature of the air above the snow layer and the temperature of the snow layer itself substantially the same, a few degrees below 0 ° C (see EP-B-0 378 636, US-A-5,272,883).
  • the refrigeration system must have both an air cooling device and a snow cooling device. In part, attempts are made to achieve appropriate ratios by means of an air-cooling device alone (see US-A-5,102,044).
  • a snow sports hall having a snow cooler, over which alternately cooling air at a temperature of 0 ° C to -30 ° C and hot air at a temperature of 0 ° C to + 30 ° C in the snow layer is fed to prevent melting of the snow layer and to compact it.
  • the invention has for its object to design a winter sports hall and operate so that snow freight from the central area in the edge areas are significantly reduced
  • the snow cooling device is designed so that with her the snow layer to a temperature of -10 ° C or below is cooled and that the snow layer is kept at such temperatures, as long as it is used by skiers.
  • the basic idea of the invention is thus to keep the snow temperature far below the freezing point, although such a temperature would not be necessary to avoid melting.
  • the snow at such low temperatures is much less likely to be shipped by the skier to the outside. This is due to the fact that the consistency of the snow at such low temperatures differs significantly from snow, which - as in the prior art just kept so far cool that it does not melt. It is more compact and harder.
  • the low snow temperature also has the consequence that the tendency to humpback is considerably lower.
  • the air cooling device is designed so that the temperature of the air is adjustable to values above -3 ° C. Due to the low temperature of the snow layer, the temperature of the air can be kept even above the freezing point. This is not only beneficial for the skiers and snowboarders, but also reduces the cost of the air cooling device, especially since the air is also cooled by the low temperature of the snow layer.
  • the implementation of the mode of operation according to the invention does not have to lead to a higher energy consumption, so that the lower care costs are cost-effective. It is particularly advantageous that the attractiveness of such a snow sports hall for skiers for the reasons mentioned above is much larger.
  • the invention with reference to a schematically illustrated embodiment is illustrated in more detail. It shows a snow sports hall 1 with a hall floor 2, a first end wall 3, a second end wall 4, a rear side wall 5 and a cover wall 6.
  • the front side wall is omitted.
  • the hall floor 2 is shown tilted up. He is inclined down to the right. It is horizontal to the plane of the drawing.
  • the hall floor 2, the end walls 3, 4, the side walls 5 and the ceiling wall 6 are insulated with heat insulation panels.
  • a system of cooling lines consisting of a supply line 7 on one side of the hall floor 2, a return line 8 on the other side of the hall floor 2 and a plurality of the supply line 7 and the return line connecting cooling lines exemplified with 9 - consists.
  • the return line 8 goes into a first evaporator 10 and there into a heat exchanger 11, from which then the supply line 7 goes out.
  • a refrigerant pump 12 ensures that refrigerant circulates through the supply line 7, the cooling lines 9 and the return line 8.
  • a plurality of air coolers 13, 14, 15 are distributed over the length of the snow sports hall 1, whereby the number of air coolers - here only three - depends on the length of the snow sports hall 1.
  • the air coolers 13, 14, 15 are arranged in the upper region of the snow sports hall 1 and have heat exchangers 16, 17, 18, which are each acted upon by two blowers 19 to 24.
  • a feed line 25 provides for the supply of a refrigerant. From her branch lines 26, 27, 28 go to the heat exchangers 16, 17, 18. These lead into a return line 29.
  • the return line 29 goes outside the snow sports hall 1 in a second evaporator 30, where the refrigerant is cooled by a heat exchanger 31. This is followed by the supply line 25, wherein a built-in pump 32 for circulation the refrigerant through the supply line 25, the branch lines 26, 27, 28 and the return line 29 provides.
  • Parallel to this cooling circuit runs a hot circuit, consisting of feed line 33, branch lines 34, 35, 36 and return line 37.
  • the branch lines 34, 35, 36 open into the heat exchanger 16, 17, 18 and branches behind it again.
  • There two-way valves 39 to 44 are provided which are actuated by a motor.
  • a pump 46 provides for the circulation.
  • the hot circuit is used to deice the air cooler 13, 14, 15 and their heat exchanger 16, 17, 18 if necessary, by a heat exchange medium is passed with a temperature above freezing point. Such a temperature is ensured by a condenser 47, which is integrated in the heat exchanger 45.
  • the switching of the refrigeration cycle to hot circulation is controlled by the two-way valves 39 to 44.
  • the snow sports hall 1 has an air inlet opening 48 in the upper area of the first end wall 3 and also an air outlet opening 49 in the upper area of the second end wall 4.
  • the air inlet opening 48 and the air outlet opening 49 are provided with fins 50, 51, via which the free cross section of the air inlet opening 48 and air outlet opening 49 set and can also be closed.
  • heat exchangers 52, 53 which are part of a coolant circuit 54, in which a pump 55 is arranged.
  • the coolant is cooled by the outflowing cold air and ensures in the air inlet opening 48 via the heat exchanger 52 for cooling the incoming fresh air. By the coolant circuit 54 so cold is recovered.
  • an air cooler 56 which consists of a heat exchanger 57 and two blowers 58, 59 acting on these.
  • the heat exchanger 57 is part of a branch line 60, which goes off from the cold feed line 25 and opens into the return line 29.
  • a branch line 61 discharges from the warm feed line 33 and opens via a two-way valve 62 into the heat exchanger 57 and via a second two-way valve 63 into the return line 37.
  • the evaporators 10, 30 are part of a cold generating plant 64, which is housed outside the snow sports hall 1 in a separate, not shown here housing.
  • the core of this refrigeration system 64 are two screw compressors 65, 66 which are driven by motors not shown here and have an adjustable flow rate. They have a known per se Make an oil injection. For this reason, the vaporous refrigerant via lines 67 and 68, respectively, first into an oil separator 69 and 70, where the oil separated from the refrigerant and via a return line 71 and 72 and contained therein cooler 73 and 74, the screw compressors 65, 66 is returned.
  • a larger part of the refrigerant is passed into a large condenser 78 and liquefied there.
  • Blower 79, 80 provide for the cooling of the condenser 78.
  • a smaller part passes via the line 81 into the condenser 47 and from there into a pre-evaporator 82, where it evaporates.
  • the part of the refrigerant passed through the condenser 78 is divided.
  • a larger part goes via a line 83 in the pre-evaporator 82, wherein a motor-adjustable throttle 84 ensures the pressure reduction.
  • the other, smaller part goes via a line 85 to two parallel heat exchangers 86, 87 and then on to the line 81, which opens into the pre-evaporator 82.
  • a partial evaporation of the refrigerant takes place.
  • the vaporous part is returned via the lines 89, 90 back to the screw compressors 65, 66.
  • the liquid fraction is removed via a line 91.
  • the throttles 94, 95 By adjusting the throttles 94, 95, the inflow of the coolant be adapted to the evaporators 10, 30 according to the respective requirements.
  • Each air cooler 13, 14, 15 is associated with a snow gun each 96, 97, 98.
  • the snow guns 96, 97, 98 are supplied via a water pump 99 and a supply line 100 and via branch lines 101, 102, 103 with water, which is cooled in the heat exchanger 86. Further, the snow guns 96, 97, 98 are supplied via a compressor 104, a feed line 105 and branch lines 106, 107, 108 with compressed air, which has been cooled by the heat exchanger 87.
  • the compressed air ensures a fine atomization of the injected water.
  • the snow guns 96, 97, 98 in the outflow of the air cooler 13, 14, 15 the sprayed water / air mixture is additionally cooled, so that even in the air snow crystals form, which fall down on the hall floor 2 and there for a Provide a layer of snow.
  • the snow production can be adjusted.
  • the snow layer is cooled by the feed line 7, the branch lines 9 and the return line 8 to a temperature of -10 ° C. or below, preferably -15 ° C.
  • a temperature of -10 ° C. or below preferably -15 ° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Road Paving Structures (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (6)

  1. Hall de sports de neige (1) abritant une piste de ski dotée d'un sol (2) recouvert ou pouvant être recouvert d'une couche de neige, ainsi qu'une installation frigorifique (64) équipée d'un dispositif pour réfrigérer la couche de neige, caractérisé en ce que le dispositif pour réfrigérer la neige est conçu de telle sorte qu'avec lui la couche de neige est refroidie à une température de -10° C ou inférieure.
  2. Hall de sports de neige selon la revendication 1, caractérisé en ce qu'est prévu un dispositif pour réfrigérer l'air qui est conçu de façon à pouvoir régler la température de l'air à une valeur de -3°C ou supérieure.
  3. Hall de sports de neige selon la revendication 1 ou 2, caractérisé en ce que les dispositifs pour réfrigérer l'air et la neige sont intégrés dans des circuits frigorifiques séparés.
  4. Hall de sports de neige selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif pour réfrigérer la neige présente des tubes réfrigérants (7, 8, 9) posés sur le sol (2).
  5. Procédé pour faire fonctionner un hall de sports de neige (1) abritant une piste de ski ainsi qu'une installation frigorifique (64) équipée d'un dispositif pour réfrigérer la couche de neige, caractérisé en ce que la couche de neige est maintenue à une température de -10° C ou inférieure.
  6. Procédé selon la revendication 5, caractérisé en ce que, dans le hall de sports de neige (1), l'air est maintenu à une température de -3°C ou supérieure.
EP02002668A 2001-12-07 2002-02-06 Piste de ski couverte et procédé d'opération de celle-ci Expired - Lifetime EP1318366B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10160237A DE10160237A1 (de) 2001-12-07 2001-12-07 Schneesporthalle und Verfahren zu deren Betrieb
DE10160237 2001-12-07

Publications (2)

Publication Number Publication Date
EP1318366A1 EP1318366A1 (fr) 2003-06-11
EP1318366B1 true EP1318366B1 (fr) 2007-02-28

Family

ID=7708433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002668A Expired - Lifetime EP1318366B1 (fr) 2001-12-07 2002-02-06 Piste de ski couverte et procédé d'opération de celle-ci

Country Status (5)

Country Link
EP (1) EP1318366B1 (fr)
AT (1) ATE355497T1 (fr)
AU (1) AU2002319174A1 (fr)
DE (2) DE10160237A1 (fr)
WO (1) WO2003048661A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026376A1 (de) * 2004-05-29 2005-12-15 Innovag AG Aktiengesellschaft für innovative Industrietechnik Innenraum-Schneeanlage
DE102005034877B3 (de) * 2005-07-26 2007-03-01 Nina Danylenko Mobiles System zur Erzeugung einer künstlichen Eisfläche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1332517C (fr) * 1988-06-22 1994-10-18 Malcolm Geoege Clulow Materiel pour fabriquer de la neige
JPH0730984B2 (ja) 1988-09-30 1995-04-10 日本鋼管株式会社 室内スキー場における造雪方法
US5272883A (en) 1989-11-22 1993-12-28 Kajima Corporation Method and apparatus for maintenance of indoor ski slopes
DE69208279D1 (de) 1991-04-11 1996-03-28 Taikisha Kk Verfahren zur Erzeugung einer Kunstschneedecke
US5381668A (en) * 1991-11-20 1995-01-17 Taikisha, Ltd. Method of maintaining artificial snow surface
US6079161A (en) * 1997-05-16 2000-06-27 Mitsubishi Heavy Industries, Ltd. Indoor type skiing ground, and method and controller for indoor type skiing ground
WO1999058910A1 (fr) * 1998-05-11 1999-11-18 Scholl Klaus Dieter Procede et dispositif pour la conservation de la neige
GB2342148B (en) * 1998-10-01 2000-12-20 Nippon Kokan Kk Method and apparatus for preventing snow from melting and for packing snow in artificial ski facility

Also Published As

Publication number Publication date
ATE355497T1 (de) 2006-03-15
DE50209581D1 (de) 2007-04-12
EP1318366A1 (fr) 2003-06-11
DE10160237A1 (de) 2003-07-17
WO2003048661A1 (fr) 2003-06-12
AU2002319174A1 (en) 2003-06-17

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