直接蒸发式人工冰场传热的数值模拟

Numerical simulation of heat transfer in direct evaporative artificial ice rink

中文关键词: 人工冰场，传热，数值模拟，冷管间距

英文关键词: artificial ice rink, heat transfer, numerical simulation, cooling tube spacing

中文摘要:

      2022年北京冬奥会的举行促使我国的人工冰场迅速发展。运用数模拟的方法对直接蒸发式人工冰场 进行传热模拟,研究了防冻管温度、冰面温度、供冷管间距等因素对供冷管热流密度及温度、冰面温度均匀性 的影响。结果表 明,防 冻 管 温 度 的 变 化 对 冰 面 温 度 的 影 响 可 以 忽 略;冰 场 供 冷 管 内 工 质 的 蒸 发 温 度 为 -32.000~-22.400℃;冰面温度降低1.000℃,冰场冷负荷增加5.90W/m2,供冷管内工质的蒸发温度降低 1.200~1.500℃;随着供冷排管间距的增加,供冷管内工质的蒸发温度和冰面温度均匀性下降;间距从30增加 到60mm,冷管内工质的蒸发温度降低15.9%,冰面温度不均匀性指标温差最值从0.004增加到0.111 ℃。

英文摘要:

      With the coming of 2022 Beijing Winter Olympic Games, China's artificial ice rink construction will be rapid development. The heat transfer in a direct evaporation rink was investigated by numerical simulation. The results showed that the influence of the antifreeze tube temperature change on the ice surface temperature can be ignored. The evaporation temperature of working medium in the ice rink cooling tube is between - 32.000-- 22.400 ℃. With the ice surface temperaturedecreasingby1.000 ℃, the cooling load of the ice rink increases by 5.9 W/m2, and the evaporationtemperatureofworkingmediuminthecoolingpipedecreasesby1.200-1.500 ℃.With the increase of the pipes pacing, the evaporation temperature of working medium in the cooling pipe andtheuniformityoftheicesurfacetemperaturedecrease.Whenthespacingincreasesfrom 30mm to 60mm,theevaporationtemperatureofworkingmediuminthecoolingpipedecreasesby15.9%,the maximumtemperaturedifferenceoficesurfacetemperatureincreasesfrom0.004 ℃to0.111 ℃.