Tap chi Khoa h^c \k Cong nghe 103 (2014) 069-075 De xuat phan trirc xa gio* trung binh thang cho Ho Chi Minh Proposing monthly average values of hourly beam solar radiation in Hochimlnh City Huynh Phw&c Hien*, Le Chi Hiep Tnrdng Dai Hpc Bdch Khoa, DHQG TP HCM DSn Toa sogn 16-5-2014, chdp nhan dang 28-10-2014 Tren ca sd tham khao cac md hinh dwgc di xuit bdi nhiiu nhom nghien cwu khac vi trin ca sd ngudn sd liiu tdng x^ cOa biic xa mat tren dwgc tai B^ mdn Cdng Nghi Nhiet Lanh - Trwimg D^l Hgc Bach Khoa, DHQG TP HCM khoing thai gian tw thing nam 2011 cho din nay, bii bao de xuit gii tri thinh phin tnic xa gid trung binh cua cic thing nim twang Ong vdi diiu kien thdn tiit cOa TP HCM Di thi,K hiin cdng viic niu tren, nhdm nghien ciiu di tiin hanh thdng ke Iwgng tdng xa gid thwc ti dwgc va tren ca sa dd xac dinh dg sang cOa biu trdn tai cac thdi diim twang wng Kit qua cua bii bio cd thi dwgc xem la ngudn dd liiu tham khao phuc vu cho viic dinh gia cac thiet bi nang Iwang mat trdi lim viec t^i TP HCM, ddng thoi phwong phip nghiin ciiu bii bio cung cd thi dwgc ung dung cho cic khu vy 0,78) kd= 1,135-0,9422.k, -0,3878.k,» (0,225 < ki < 0,775) ka = 0,2I5(k>0,7751 ' kd - 0,9686 + 0,3882.k, + l,4183.k,' -10,1860.k,' + 8,3733.k,'(0,24