In many large farms, the sand is "recycled" from the free stall, into the gutter or alley, carried by water to a recovery system, and then reapplied to the free stall.
Various energy conservation technologies incorporated for water chillers such as heat recovery, ice-thermal storage and free cooling are also introduced.
先进的离心式冷水机组不仅具有制冷功能，而且具有热回收、冰蓄冷、免费取冷等多种功能，节能效果显著。
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Operating mode as follows: the summer of refrigeration unit operation, the whole refrigeration heat recovery unit at the same time as the hotel offers free full hot water supply;