Mô phỏng số thiết bị chưng cất nước sử dụng năng lượng mặt trời dạng singgle basin kết hợp ống thủy

NGHIEN cufu-TRAOD6I

M 6 PHONG SO THIET Bj CHU'NG CAT NU^O^C Sl> DUNG

NANG LU'gNG MATTRO^I DANG SINGLE BASIN KET HO?

ONG THUY TINH CHAN KHONG

NUMERICAL MODELLING OF A SINGLE BASIN SOLAR STILL COUPLE

WITH EVACUATED GLASS TUBES

Hoang Van Viet', Nguyen The Bao^

'Cdng ty TNHH Le Phong

^Vien Phat tridn Nang lugng Bdn vung ISED

Bdi bdo trinh bdy thuc hien mo phong so dua fren phdn tich nhiit & thiit bi chung cdt nu&c

su dung ndng lugrng mgt tr&i dgng Single Basin, kit hap ong thuy tinh chdn khong. Viic mo phong

giup du dodn nhiet do mat ngodi ciia Hnh phu (T J, nucrc cdn chung cdt (T^, cUng nhu hiiu sudt

(T)^) vd sdn luong (m^J md thiet bi dgt duac. Kit qud sau mo phong se duoc kiem chieng bdng mo

hinh thuc te thong qua thuc nghiem tgi dieu kien TP. Ho Chi Minh trong nhieng ngdy ndng thdng

4/2015. V&i dien tich 0,6 m^ (dien tich boc hai) kit hap 8 ong thuy tinh chdn khong, thiit bi cho ra

sdn luong cao nhdt khi do sdu l&p nu&c cdn chung cdt Id 0,01 m (6 lit), nu&c nggt 0,02 m (17,Slit).

Sdn luang nu&c chieng cdt qua mo phong dgt 6,65 kg/m^ (tie 7-I7h); Trong khi thiec nghiem cho ra

5,86 kg/m^ (tic 7-17h), img v&i hue xg trung binh 516 W/m^. Hiiu sudt trung binh ciia thiet bi dgt

43,76 %, nhiet do nu&c cdn chung cdt l&n nhdt 90,82°C.

Tir Idida: Chung cdt nu&c su dung ndng lugmg mat tr&i.

ABSTRACT

This paper presents numerical modelling based on the thermal analysis of a single basin solar

still couple with evacuated glass tubes. Modelling performance has been predicted theoretically in

terms of brackish water (T^J, outside glass cover temperatures (T J, energy efficiency (TJ^) and

output (m). Result of modelling has been confirmed by experiment in the sunny days in april in

Ho Chi Minh city. With an area of 0,6 m^ (evaporating area) couple with 8 evacuated glass tubes,

equipment has the highest output when the brackish water depth is 0,01 m (6 liters) and the fresh

water is 0,02 m (17,5 liters). Production of distilled water by modelling reached 6,65 kg/m^ (from

7am to 5 pm) while one by experiment was 5,86 kg / m^ (from 7am to 5 pm) to the average radiation

516 W/rr^. Average energy efficiency was 43,77 %, maximum brackish water temperature reached

90.82 "C.

Keywords: Numerical modelling of solar still; Evacuated glass tubes, performace of solar still. ^

ISSN 0866 - 7056

TAP CHi CO KHi VIET NAM, Sd 6 nam 2015

www.cokhivietnam.vn