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An air-water dual-source heat pump system for shrimp ponds.

Number: No 101

Author(s) : CHENG J. H., GAO P., CAO X., SHAO P., SHAO L. L., ZHANG C. L.

Summary

Ponds in farmland have been widely used for shrimp culture in eastern coastal regions of China. To maintain the pond water temperature in winter, an environment-friendly, energy-saving and low-cost heating system is urgently needed. This paper proposed a new air-water dual-source heat pump system (AWDSHPS), which is equipped with two parallel evaporators, one taking heat from air and the other from water in idle ponds. The two heat sources can be used separately or simultaneously, based on ambient conditions and heating demand. A validated load model is built to calculate heating demand accurately. Another simulation model is applied to fulfill system design and performance prediction. Furthermore, operational strategy of full growing season is optimized. The results showed that, compared with the same system in which only air source is used, the AWDSHPS has higher evaporating temperature. That increases from -7.7°C to -3.2°C at ambient temperature of 0°C, resulting in 7% increase in energy efficiency and 27% increase in heating capacity. Therefore, system energy performance becomes more stable, reducing the heat pump size to lower both initial investment and operating costs.

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Pages: 10 p.

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  • Original title: An air-water dual-source heat pump system for shrimp ponds.
  • Record ID : 30029982
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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