Date of Measuring day

Period

Inlet temperature t_i

Productivity (D)

Productivity increase %

Conventional

still

Modified

Still with preheating

Dconvetional

(ml)

Dmodified (ml)

15-9-2014

9 a.m.:16 p.m.

31˚C

56˚C

4825

6240

29.3

24-10-2014

9 a.m.:16 p.m.

29˚C

53˚C

4660

5951

27.7

30-10-2014

9 a.m.:16 p.m.

28˚C

50˚C

4468

5713

27.9