Column: Rectifying ventilation – Costs & paybacks

I have 11 books on ventilation on my shelves, eight of them on pigs. In my opinion all but one of them tend to start at too high a level for the type of producer I get called out to discuss ventilation. Also, most of them fail to cover what rectification might cost – although their coverage of the scientific causes for poor performance is first class, even if they do assume the reader understands the graphs and technical language in the first place. What the textbooks don’t tell you a