Design of an Improved Cooking Stove Using High Density Heated Rocks and Heat Retaining Techniques

Table 4

Summary of results on thermal performance of the stove.

	Performance index	Unit of measure	Tests (n = 4)
S/n			1	2	3	4	MEAN	STDEV
1	Thermal efficiency	%	24.8	29.4	35.7	25.2	28.8	5.1
2	Water boiling rate	min/ltr	14.9	15.5	14.1	14.8	14.8	0.6
3	Specific fuel consumption	g/liter water boiled	53.1	45.0	36.0	53.7	47.0	8.3
4	Fire power	kW	1.77	1.44	1.27	1.80	1.57	0.26
5	Fuel Use Reduction	%	76.1	79.7	83.8	75.8	78.8	3.7