id	keyword
american_scientific_journal-7324	heat
american_scientific_journal-7324	heat exchanger
american_scientific_journal-7324	flow
american_scientific_journal-7324	fluid
american_scientific_journal-7324	tube
american_scientific_journal-7324	heat transfer
american_scientific_journal-7324	pipe
american_scientific_journal-7324	rate
american_scientific_journal-7324	pipe heat
american_scientific_journal-7324	mass
american_scientific_journal-7324	exchangers
american_scientific_journal-7324	temperature