ʻO ke ʻano o ka convection ʻano kīʻaha palahalaha tempering umu ka hoʻonui ʻana o ka ʻano maʻamau ʻano kīʻaha palahalaha tempering umu.Ma waho aʻe o nā ʻano aniani a pau i hiki ke hana i ka umu hoʻoheheʻe ʻia, hiki i ka umu hoʻoheheʻe convection ke hana i ka haʻahaʻa haʻahaʻa aniani.Wahi a nā kūlana convection system, hiki iā ia ke hana i nā aniani haʻahaʻa haʻahaʻa.