Nghiên cứu sấy bông atiso dùng năng lượng mặt trời

NGHIEN CIJfU-TRAODOl

\l NGHIEh CdU S6Y BONG fiTISO DdNG NflNG LtfONG M^T TRdl

STUDY OF ARTICHOKE FLOWERS DRYING USING SOLAR ENERGY

TS. L^ Anh Dflc. TS. Nguyin Huy Bich

Trfldng Dai hpc Ndng Lam TR Ho Chi Minh

Bdngatisdld ngudn dUdc lieu quy vd la nguon thu on dmh cua ndng ddn Dd Lat, Lam Ddng. Qud

trinh che bien bdng, trong dd khdu say nhdm bdo dam hdm lUdng dUdc hgc vd ve sinh an todn thUcphdm

Id yeu cau thUc te vd biic xuc. Bdi bdo trinh bdy ket qud tinh todn thiet ki, che tao mdy vd thd nghiem

say bdng atisd tren mdy say si( dung ndng lUdng mat trdi cd ndng suat 10 kg/me. Ket qud khao nghiem

cho thay thdi gian say rut ngan ddng ke, phdn bd nhiet vd phdn bo gid ddng deu, sai lech vi am do cua

bdng atisd sau khi say tai cdc vi tri trong budng say Id khdng ddng ke, hieu suat nhiet cua mdy s&y khd cao

nhd cdi tien ket cau ciia bd thu biic xa mat trdi Bdng atisd sau khi say cd mau sac, miii vi vd hdm lUdng

cynarin cao hdn han so vdi cdc mdu phdi nang. Cdc phUdng trinh md td quan he giiXa biic xa mat trdi m

nhiet do say, dUdng cong gidm dm, tdc do gidm dm dd dUdc xdc dinh. Nghien aiu ciing dd xay dUng dUCc

phUdng trinh dU dodn tdc do gidm dm cua bdng atisd trong qud trinh say.

Tfl khoa: Atisd, cynarin, mdy say, ndng lUdng mat trdi

ABSTRACT

Artichoke flower is a value pharmacological product and one of the main income of farmers in

Dalat, Lam Dong Province. The flower processing in which drying is necessary and it requires to ensure

the high quality, food safety, and conservation of pharmacological ingredients after processing. This paper

presents the designing manufacturing and testing an Artichoke flower dryer using solar energy with capacity oj

10 kg/batch. The results show that the drying time is short, heating and drying air are distributed equally

over the drying chamber, the difference of moisture content of dried artichokes at other positions in the

drying chamber is small and reasonable, thermal efficiency is high. The cynarin content, color and aromi

of the artichoke flowers dried by dryer are better than the ones exposed to the sun. Some equatiom

describe the relationship between solar radiation and the drying temperature, the moisture reduction

curve and the drying rate are determined.

Keywords: Artichoke, cynarin, dryer, solar energy.

^ 9 TAP CHi CO KHi VIET NAM, Sd 12 nam 2013