1.Hula moea ka bolelele bo feletseng ba mohaho ho qoba lipokotho tsa moea o chesang tse setseng
2. Ntša moea ho tloha boemong bo phahameng ho ea sebakeng se tlaase, ho potlakisa ho potoloha ha moea ka har'a sethopo ho ea ho pholiso.
3.Ka mokhoa o nepahetseng oa li-axial flow fans, li ka ntlafatsa haholo motsamao oa moea ka har'a sethopo sa sethopo 'me tsa fella ka kholo ea lijalo.
4.The circulation fan system e na le axial flow fan, terata ea cable, e ka boela ea amahanya le tsamaiso e bohlale ea ho laola ka ts'ebetso ea konopo e le 'ngoe.