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Evaluation of the thermal energy balance of a practical cow barn with dynamic type ice storage.

Number: pap. 062

Author(s) : HIRANO S., HOSHINA H., YANAGIDA K., et al.

Summary

A practical test plant of a heat pump system which has both functions of heat recovery from fresh milk and cold thermal storage with ice slurry has been developed. The test plant is assumed a standard scale of cow barn in Hokkaido district, which has 100 cows per barn and 2000L class milking per day by Twice-A-Day milking schedule, and it has been installed at Nakashibetsu town in Eastern Hokkaido. In the usual milking cow barn, it is required to cool fresh milk from about 37 degrees Celsius to less than 10 degrees Celsius for quality preservation. And hot water is also necessary for cleaning the barn. During milking period, fresh milk is cooled by the disaccharide base ice slurry coolant from storage tank and then the ice storage tank coolant absorbs heat from fresh milk and produces an increase in temperature. And when the idling period, heat pump absorbs heat from ice storage tank to make hot water and simultaneously make ice slurry in storage tank. We have investigated and evaluated on energy balance and efficiency of the system. And it is found that the system has practical utility on the standard class cow barn in Hokkaido Japan.

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Pages: 7 p.

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Details

  • Original title: Evaluation of the thermal energy balance of a practical cow barn with dynamic type ice storage.
  • Record ID : 30005054
  • Languages: English
  • Source: 10th International Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Kobe, Japan, July 29-August 1, 2012.
  • Publication date: 2012/07/01

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