Nghiên cứu sấy cá dứa bằng máy sấy dùng năng lượng mặt trời

NGHISN cuu - TRAO BOI

NGHIEN CL U SAY CA DITA BANG MAY SAY - DUNG

NANG LUOTVG MAT TROfl

STUDYING FOR DRYING PANGASIUS ELONGATUS

USING A SOLAR - ASSISTED DRYER

ThS. TriTOTig Quang Trirong. ThS. Tran Xin Tuan, TS. Vuwng Tfianh Tien

Tmomg Dai hpc Nong lam TP. HS Chi Minh

TOM T.AT

Cd dua mgt ndng Id thuc phdm rdt duQC ua chuong va co gia tri thuang mgi cao. Tuy

nhien. cho den nay. bien phdp lam kho duy nhat Id phai nang, ddn den vdn de chdi luong

khong on dinh. . . .

Mot mau mdy say nang sudl lOkg/me da dugc Met ke - che tgo. Md hinh say xuyen

khay vd ddo gid dd duac chgn. Bg thu nhiet mat trai chi lao dan gidn lir vol lifu re tienda

dugc su dung, cung cdp dii nhiet cho qud trinh say. bg dien tra de chinh linh nhiit dg say va

la nguon nhiet phu vao nhimg ngdy mua dugc lap dgl.Kel qud khao nghiem cho thdy rang,

bg thu nhiet ddp img yeu cdu nhiet do say trong day tir 40"C -SO°C. Sdn phdm sau khi say dgt

veu cau ve dm do (60% ± 1% ll'hl vddgtrdng (56% ± l%).Dung CCD vai JMP siifhvure. che

dg say tii uu cho cd dita mgt ndng cimg da dugc xdc dinh vdi nhiet do say 44.2"€. tdc dg gid

0,24m/s cho sdn phdm cd do Irdng 5 7%, tuang img Ihdi gian say Id 262 phut.

Tir Ithoa: Cd dua. bd thu iihicl mat trdi, thai gian sdy, do trdng.

ABSTRACT

The Pangasiiis elongates, especially one-sunningPangasius is afavourile food and in

high value. However, for now. the only solution has been the solar drying which causes the

problems in Ihe dried fish quality.

.4 laboratory dryer for 10kg per batch was designed and fabricated. Type of drying

through trays with the air reversal principle was selected. The solar collector is fabricated

easily from some cheap materials which supply enough heal for drying. .4 set of electric

resistor was also installed for tuning drying air temperature and adding heat source in raining

days. Experimental results have shown that the collector meet the requirement of drying

temperature in range from 40'€ to 5WC.Driedfish was satisfied in requirements fan moisture

conlenl(60% ± 1% wbj and whiteness value (56% ± 1%). Furthermore, using CCD with JMP

software, the optimal drying parameters was found:44.2''C in drying air temperature and

0,24m s in superficial air velocity resulting in 57% of whiteness valueafler 262 minutesin lime

for dn'ing.

Ke>'words: Pangasius elongates (Dua fish). Solar collector. Drying lime, Whitenes s value.

ISSN 0866 - 7056

TAP CHf CO KHf VfET NAM, S6 9 nam 2016

www.colthivietnam.vn