Research on the Flexible Heating Model of an Air-Source Heat Pump System in Nursery Pig Houses

Hua Wang, Jijun Liu, Zhonghong Wu, Jia Liu, Lu Yi, Yixue Li, Siqi Li and Meizhi Wang ()
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Hua Wang: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Jijun Liu: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Zhonghong Wu: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Jia Liu: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Lu Yi: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Yixue Li: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Siqi Li: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Meizhi Wang: College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Agriculture, 2023, vol. 13, issue 5, 1-13

Abstract: Maximizing the utilization of renewable energy for heating is crucial for reducing energy consumption in pig houses and enhancing energy efficiency. However, the mismatch between peak solar radiation and peak heat load demand in nursery pig houses results in energy waste. Therefore, we investigated a flexible air-source heat pump system (F-ASHP) based on the hourly-scale energy transfer of solar energy. A theoretical calculation model for F-ASHPs in pig houses in the heating areas of northern China has been established through on-site testing and Simulink. This study investigated the heat storage and release of four energy storage materials in pens and the variation in heat load in the house, validating the accuracy of the model. The results show that the F-ASHP can effectively match the peak solar heat and peak heat load in the house. Among the four energy storage materials in pens, the magnesium oxide heat storage brick material performed the best. During intermittent solar periods, it released 3319.20 kJ of heat, reducing the heat load in the pig house by 10.1% compared with that by the air-source heat pump (ASHP). This study provides a theoretical model for flexible heating calculations in pig houses in northern China and aims to serve as a valuable resource for selecting energy-storage pens.

Keywords: energy saving; F-ASHP model; nursery pig; storage pen; Simulink (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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