Study of Ammonia Concentration Characteristics and Optimization in Broiler Chamber during Winter Based on Computational Fluid Dynamics

Xiuguo Zou,Fei Gong,Jiawei Meng,Yuanyuan Song,Wenchao Liu,Shixiu Zhang,Xinfa Qiu,Yan Qian,Siyu Wang,Jiangxue Hu,Shikai Zhang

doi:10.3390/agriculture12020182

Abstract

Poultry breeding is one of the most significant components of agriculture and an essential link of material exchange between humans and nature. Moreover, poultry breeding technology has a considerable impact on the life quality of human beings, and could even influence the survival of human beings. As one of the most popular poultry, broiler has a good economic benefit due to its excellent taste and fast growing cycle. This paper aims to improve the efficiency of raising broilers by understanding the impact of ammonia concentration distribution within a smart broiler breeding chamber, and the rationality of the system’s design. More specifically, we used computational fluid dynamics (CFD) technology to simulate the process of ammonia production and identify the characteristics of ammonia concentration. Based on the simulation results, the structure of the broiler chamber was reformed, and the ammonia uniformity was significantly improved after the structural modification of the broiler chamber and the ammonia concentration in the chamber had remained extremely low. In general, this study provides a reference for structural optimization of the design of broiler chambers and the environmental regulation of ammonia.

Highlights

The yellow-feathered broiler has the characteristics of delicious meat—tender and delicious
The frequency converter corresponding to the internal circulation and external circulation of broiler chamber gas was adjusted to 0 Hz, 15 Hz, and 30 Hz according to Table 1
The models of the smart-breeding broiler chamber and the corresponding broilers were constructed based on field monitoring: first, the grid was reasonably meshed into discrete computing domains for each model, and second, the boundary conditions were determined

Summary

Introduction

The yellow-feathered broiler has the characteristics of delicious meat—tender and delicious. During the broiler breeding process, a large number of air pollutants are produced, including ammonia (NH3), hydrogen sulfide (H2S) and methane (CH4), which adversely affect the production and growth performance of the broiler. Ammonia discharge has become one of the major environmental protection problems, as it can endanger the health of animals and human beings, as well as cause environmental pollution [3]. Factors such as humidity, breeding density and ventilation have non-negligible impacts on ammonia concentration in the broiler house. It is of great significance to study the ammonia concentration distribution in a broiler house when considering its design quality

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