Assertion: phosphoric acid's amount | /r/HasProperty | supplied to the head space
Facets:
value: over bed space of the kiln
type: LOCATION
Source sentences:
text: Along the length of the kiln there will be a plurality of air ports 38 used to control the amount of air being supplied to the head space or overhead or over bed space of the kiln in order to control the process temperature as described below.