Kōpaka Hollow Floating Ball e kōkua i ke kaohi i ka pohō wela, evaporation, a kōkua me ka ʻala a me ke kaohi noe. Hoʻohana ʻia nā Pōhaku Hollow ma ke ʻano he kīʻaha kiwikā i nā noi kahe kahe.
Hana ʻia ka Ball Hollow Floating Ball mai ke kūpale i ka wela a me nā kinikini kūpale ʻino. Loaʻa iā ia nā hiʻohiʻona e like me ka leo manuahi kiʻekiʻe, kaomi haʻahaʻa haʻahaʻa, ke kiʻekiʻe o ka unuhi nui-transfer, ke kahawai kiʻekiʻe, ke kūkā wai-wai like, ka umekaumaha kikoʻī, ka maikaʻi o ka hoʻoili nui a pēlā aku, a me ka mahana o ka noi ma nā pae media mai 60 a 150. No kēia mau kumu e hoʻohana ākea ia i nā hale kiaʻi hāʻawe i ka ʻaila ʻaila, ʻoihana kemika, ʻoihana alkali-Chloride, ʻoihana ʻenekini lānahu a me ka pale ʻana i ke kaiapuni, etc.