Quality and Performance Evaluation of Jatropha Oil Blended with Kerosene for Cooking Stoves in Ethiopia

Table 3

Effect of blending on the viscosity of the Jatropha oil.

Fuel	Viscosity (cSt)
	Test 1	Test 2	Test 3	Ave.	SD	Std. error	T-test	value	95% confidence level
									Lower	Upper
J100	45	43.5	44	44.2	0.50	0.28	129.9	0.001	36.2	38.7
J10	4.8	5.2	4.5	4.8	0.35	0.20	23.83	0.002	3.96	5.70
J20	7.8	8.5	7.5	7.9	0.51	0.29	26.77	0.001	6.65	9.20
J30	13.5	12.8	13.5	13.2	0.40	0.23	56.85	0.001	12.2	14.27
J40	14.8	16.2	15	15.3	0.75	0.43	35.07	0.001	13.45	17.21

Viscosity of Jatropha oil showed a statistically significant reduction due to blending with kerosene fuel () (Table 4).