RU2694720C1 - Method of energy saving during production of artificial cold for ice arenas - Google Patents

Abstract

FIELD: cooling or freezing equipment.SUBSTANCE: invention relates to refrigerating industry. Method of energy saving during production of artificial cold for ice arenas includes implementation of cold supply of arenas with brine cooling system. In winter period cold coolant is supplied by pumps to the closed arena, where it is heated, taking heat from the cooling plate. From the closed arena the coolant is supplied to the open arena, where it is cooled, giving an equivalent amount of heat through the ice layer to the environment.EFFECT: reduced power consumption of refrigerating unit in winter period of time.1 cl, 2 dwg

Description

The invention relates to the refrigeration industry, and in particular to methods of producing artificial cold for sports facilities.

The production of artificial cold is an integral part of sports complexes with ice arenas. The profitability of sports arenas with artificial ice depends on the circuit solutions used for this purpose.

Known methods of using the heat removed from the refrigeration machine, for heat supply of objects of a sports complex, for example, for heating water in the pool. In installations with complete heat recovery, the following schemes are known:

- the unit is equipped with a full heat exchanger, which is a water condenser and air condenser, portable for chillers installed in the engine room, or built into monoblock chillers (street version).

- the unit is equipped with a water condenser, a heat exchanger and a dry cooling tower to dissipate the heat load not removed by the heat exchanger [1].

Both of the above schemes make it possible to utilize all possible heat generated by the refrigeration unit. The disadvantage of this method of cooling ice arenas remain high energy consumption for the production of cold.

The closest technical solution to the proposed method is a method of energy supply for artificial ice on skating rinks [2], which is that during the cold season the brine that is stored in the heat insulated container is frozen, and in the warm season the relatively negative thermal energy is used frozen brine, the physical properties of which provide the temperature of the coolant to -16 ° C until complete melting of its entire mass.

The disadvantage of this method of energy saving is a large amount of insulated container with brine and a large amount of brine used as a cold accumulator.

The basis of the invention is the task of improving the energy efficiency of artificial cold production at sports facilities, where there are indoor and outdoor ice arenas. The technical result is achieved due to the fact that in the winter time, the natural cold of the open ice arena is used for cold supply of the covered ice arena. Cooling arenas at the same time carried out brine cooling system.

When the outdoor air temperature is below -10 ° C, the cold supply of the closed ice arena is carried out when the compressors of the refrigerating machine are turned off. The coolant supply circuit in this case is shown in FIG. 1. The scheme works as follows: the valves (2 and 5) are closed, and the valves (1, 3, 4, 6) are open. Cold coolant is first pumped to the closed ice arena where it heats up, taking heat from the cooling plate, and then from the closed arena the coolant is fed to the open ice arena where it cools, giving an equivalent amount of heat through the ice layer to the surrounding environment.

If the outdoor air temperature is above -10 ° C, then the cold supply is carried out when the compressors of the refrigerating machine are running, the flow of coolant in this case is shown in FIG. 2. In this case, the scheme works as follows: if it is necessary to maintain the temperature of the ice in both ice arenas, then it is necessary to close the valve (6) and open the valves (1, 2, 3, 4, 5). Cooled in plate evaporators, the cooled coolant is pumped through the collectors to the indoor and open ice arenas, where it, taking heat from the ice, heats up. Warm coolant from the fields is fed to the plate evaporators. If it is necessary to maintain the temperature of the ice only in a closed ice arena, it is necessary to close the valves (1, 5, 6), and the valves (1, 5) to open. If it is necessary to maintain the temperature of the ice only in the open ice arena, it is necessary to close the valves (2, 3, 4, 6), and the valves (2, 3, 4) to open.

Thus, the claimed invention can significantly reduce the electricity consumption of the refrigeration unit in the winter time. In the cold period of the year, electricity is spent only on the operation of pumps, while the compressors are switched off. By reducing the hours of operation of compressors, there is also a significant saving in system resource, reducing the cost of repair and maintenance of refrigeration equipment.

Sources of literature

1. Spassky A.A. Cold supply systems for artificial ice rinks / А.А. Spassky, I.A. Spassky // Refrigeration. - 2012. - №5. - pp. 31-33.

2. Patent No. 96106400 Russian Federation, IPC F25D 3/02; F25C 3/02. Energy supply method for artificial ice on skating rinks and productions with refrigeration units, heat-insulated container / Verbitsky AP - №96106400 / 13; declare 04/01/1996; publ. 10.10.1998. (prototype)

Claims (1)

A method of energy saving in the production of artificial cold for ice arenas, consisting in the fact that cold arenas are supplied with a brine cooling system, characterized in that in winter time cold coolant is first pumped to the closed ice arena, where it heats up, taking heat from the cooling plate, then from the closed arena, the coolant is fed to the open ice arena, where it cools, giving an equivalent amount of heat through the ice layer to the environment.

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