The most popular topic for me this summer and fall at producer meetings is managing propane expense in swine facilities. When combined with the supply side concerns, producers have taken on a new awareness of how heating systems work in their facilities and where heat loss is occurring.
The reason I mention this on an August summer day is that today I received notification that the latest issue of the Nebraska Energy Quarterly is available from the Nebraska Energy Office. The link to this issue is: http://www.neo.ne.gov/neq_online/NEQ/energyquarterly.index.htm.
In this issue is a great discussion of foil-faced bubble wrap. The article basically says foil faced bubble wrap, which many in the upper Midwest install in sidewall and tunnel curtains in winter, only has an R value of about 1.
Yet I hear from many producers about the effectiveness of this product. We use it at SVC Research in our facilities and it does make a difference in pig comfort and winter ventilation.