Ventilation of Agricultural Structures

A special issue of AgriEngineering (ISSN 2624-7402).

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 4042

Special Issue Editors


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Guest Editor
Biological and Agricultural Engineering Department, NC State University, Raleigh, NC 27695, USA
Interests: livestock barn ventilation; agricultural air quality; energy use in livestock barns
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Guest Editor
Animal Science Department, NC State University, Raleigh, NC 27695, USA
Interests: facility design; precision livestock farming; swine; welfare

Special Issue Information

Dear Colleagues:

The costs of agricultural structures and energy continue to increase alongside the demand for ventilation of agricultural structures. Among the drivers of the increased ventilation demands in agricultural structures are rising global temperatures, greater heat production per unit mass by the more recent genetic lines of livestock, increased marketing weights, increased stocking or planting densities, and greater consumer interest in animal welfare. Hence, there is a need to optimize ventilation rates and strategies that balance economics with performance and animal welfare. Original research on mechanical and natural ventilation in agricultural production facilities—such as livestock and aquaculture barns and greenhouses—is welcomed in this Special Issue. Although ventilation of agricultural structures is covered in other journals, we seek to provide comprehensive coverage of this important topic in a single issue.  Consequently, we hope that this Special Issue will provide knowledge sharing and cooperation among ventilation professionals working in different agricultural disciplines.

Topics of interest include, but are not limited to, the following:

  • Ventilation impacts on indoor air quality (e.g., temperature, gases) and/or performance (or production) and livestock welfare;
  • Comparison of ventilation needs and strategies affected by livestock genetic lines;
  • Innovative structural design to improve ventilation
  • Numerical model development and application to ventilation problems;
  • Case studies on validated ventilation strategies;
  • Application of novel measurement techniques to ventilation;
  • Energy use in ventilation.

This Special Issue will publish original research (including case studies) and invited review papers, excluding studies focused on pollutant emissions and statistical modeling. Review papers will only be accepted by invitation of the Guest Editor; interested researchers should submit an outline of the review paper (including justification) and a short CV to the Guest Editor.

Prof. Sanjay B. Shah
Assist. Prof. Suzanne Leonard
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. AgriEngineering is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • livestock
  • poultry
  • greenhouse
  • mechanical
  • natural
  • CFD
  • energy use
  • renewable

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Published Papers (1 paper)

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Research

14 pages, 4577 KiB  
Article
Using Computational Fluid Dynamics to Evaluate High Tunnel Roof Vent Designs
by David C. Lewus and Arend Jan Both
AgriEngineering 2022, 4(3), 719-732; https://doi.org/10.3390/agriengineering4030046 - 5 Aug 2022
Cited by 1 | Viewed by 2488
Abstract
Freestanding high tunnels are cost-effective, plastic film-covered growing structures that use very little to no modern environmental control technology. Natural ventilation is used to control temperature and humidity. Typically, ventilation openings are created along the sides by manually rolling up a section of [...] Read more.
Freestanding high tunnels are cost-effective, plastic film-covered growing structures that use very little to no modern environmental control technology. Natural ventilation is used to control temperature and humidity. Typically, ventilation openings are created along the sides by manually rolling up a section of the plastic film cover. While common on greenhouses, roof vents are not typically part of high tunnel designs used in the United States. This paper focuses on high tunnel ventilation during the summer, when maximizing the air exchange rate results in a low differential between inside and outside air temperatures. Computational fluid dynamics (CFD) simulations were used to evaluate the effects of several roof vent designs on the air flow rate through the high tunnel and the inside air temperature. The CFD models were developed and validated using environmental data collected at the Pennsylvania State University High Tunnel Research and Education Facility (Rock Springs, PA, USA). Five ventilation designs were simulated using a commercial CFD software package that was augmented with a radiation and crop architecture model. A root mean square error of 0.87 °C was found between the measured and simulated high tunnel temperatures (n = 144). The designs with roof vents were found to increase mass-based ventilation rates through the high tunnel by 20% to 78%. However, they did not lower inside air temperature more than 0.1 °C compared to the traditional design with roll-up side vents only. Additional research is needed to evaluate whether the control of other environmental parameters and weather conditions warrants the use of high tunnel roof vents, especially for humidity control and the combination of high temperature with low wind speed conditions. Full article
(This article belongs to the Special Issue Ventilation of Agricultural Structures)
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