Biomass, is a renewable energy source, biological material derived from living, or recently living organisms, such as wood, waste, and alcohol fuels. So, I guess it doesn't need a ventilation?
A masterful post. The first sentence of the definition of "Biomass" pasted from wikipedia, and a possible mis-understanding of what "ventilation" is. Martin - I think you might just be right in your 'spam' suspicion :-) Looks like the writer must have been tasked to find all threads with "ventilation" in the subject, attempt to write a reply, and add spam. Indeed just Google for aira93 ventilation: evidently a member of many forums, and an expert in the ventilation of crankcases, incubators, and even beehives, etc!