t Time sec 120 Time min Temperature Difference T C Pi W Ps W Td C 0 2 40 14093

T time sec 120 time min temperature difference t c pi

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t = Time (sec) 120 Time (min) Temperature Difference T ( ˚ C) Pi (W) Ps (W) Td ( ˚ C) 0-2 4,0 140,93 121,3430916 7,0 2-4 5,0 176,16 151,6788645 11,0 4-6 4,0 140,93 121,3430916 16,1 6-8 3,0 105,70 91,00731871 19,8 8-10 4,0 140,93 121,3430916 22,9 10-12 3,0 105,70 91,00731871 26,9 12-14 4,0 140,93 121,3430916 29,8 14-16 3,0 105,70 91,00731871 33,9 16-18 3,0 105,70 91,00731871 36,7 18-20 3,0 105,70 91,00731871 39,7 20-22 2,0 70,46 60,67154581 42,8 22-24 2,0 70,46 60,67154581 44,9 24-26 1,0 35,23 30,3357729 46,8 26-28 3,0 105,70 91,00731871 47,7 28-30 2,0 70,46 60,67154581 50,8 30-32 1,0 35,23 30,3357729 52,8 32-34 2,0 70,46 60,67154581 53,7 34-36 1,0 35,23 30,3357729 55,7
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1 Appendix 15 Test: Test 8 Type: Cardboard Date: 2005-07-19 Time: 13:05 Site latitude: 06,55N Time (min) T-air (C ˚ ) T-water (C ˚ ) Wind Illumination (Lux) Zenith angel ( ˚ ) Azimuth angel ( ˚ ) 0 34,0 41,5 Below 1m/s 1395,0 14 (16) (-22) 159 f N 1 33,8 42,5 Below 1m/s 3 33,3 44,6 Below 1m/s 5 33,0 46,9 Below 1m/s 7 33,4 49,2 Below 1m/s 9 33,4 51,6 Below 1m/s 11 33,6 54,0 Below 1m/s 13 33,7 56,5 Below 1m/s 15 34,0 58,5 Below 1m/s 17 34,2 60,6 Below 1m/s 19 34,0 62,8 Below 1m/s 21 34,3 64,8 Below 1m/s 23 34,2 66,7 Below 1m/s 25 33,9 69,1 Below 1m/s 1390,0 16 (19) (-39) 148 f N 27 33,9 71,2 Below 1m/s 29 34,2 73,3 Below 1m/s 31 33,8 75,4 Below 1m/s 33 33,3 77,3 Below 1m/s 35 33,4 79,4 Below 1m/s 37 33,8 81,8 Below 1m/s 39 34,0 83,9 Below 1m/s 41 34,1 86,1 Below 1m/s 43 33,9 88,2 Below 1m/s 45 34,0 90,3 Below 1m/s
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2 47 33,7 92,3 Below 1m/s 1380,0 (23) (-48) 130 f N 49 33,8 94,2 Below 1m/s 51 33,8 96,2 Below 1m/s 53 33,9 98,5 Below 1m/s 55 34,0 100,0 Below 1m/s Time to boil water (min) 54 Solar insolation (W/m2) Insolation (W/m2) Time Time half way through the test Minutes between Time factor Before 839,2 12:35 13:28 53,0 0,582677165 After 775,3 14:14 13:28 74,0 0,417322835 812,5 Mean solar insolation during the test 7.2 Calculating cooking power 7.4 Standardizing cooking power 7.5 Temperature Difference Pi= Interval power (W) Pi=((T2-T1)*m*Cp)/t Ps= Standardized Power (W) Ps=Pi*(Ls/Li) Td= Temperature difference ( ˚ C) Td=Tw-Ta m = Mass water (kg) 2,02 Ls = Standard insolation (W/m^2) 700 Tw = Water temperature ( ˚ C) Cp = Heat capacity (J/K*kg) 4186,00 Li = Interval average solar insolation (W/m^2) 812,53 Ta = Ambient air temperature ( ˚ C) t = Time (sec) 120
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3 Time (min) Temperature Difference T ( ˚ C) Pi (W) Ps (W) Td ( ˚ C) 1-3 2,1 147,98 127,4810512 8,7 3-5 2,3 162,07 139,6221037 11,3 5-7 2,3 162,07 139,6221037 13,9 7-9 2,4 169,11 145,6926299 15,8 9-11 2,4 169,11 145,6926299 18,2 11-13 2,5 176,16 151,7631562 20,4 13-15 2,0 140,93 121,4105249 22,8 15-17 2,1 147,98 127,4810512 24,5 17-19 2,2 155,02 133,5515774 26,4 19-21 2,0 140,93 121,4105249 28,8 21-23 1,9 133,88 115,3399987 30,5 23-25 2,4 169,11 145,6926299 32,5 25-27 2,1 147,98 127,4810512 35,2 27-29 2,1 147,98 127,4810512 37,3 29-31 2,1 147,98 127,4810512 39,1 31-33 1,9 133,88 115,3399987 41,6 33-35 2,1 147,98 127,4810512 44,0 35-37 2,4 169,11 145,6926299 46,0 37-39 2,1 147,98 127,4810512 48,0 39-41 2,2 155,02 133,5515774 49,9 41-43 2,1 147,98 127,4810512 52,0 43-45 2,1 147,98 127,4810512 54,3 45-47 2,0 140,93 121,4105249 56,3 47-49 1,9 133,88 115,3399987 58,6 49-51 2,0 140,93 121,4105249 60,4 51-53 2,3 162,07 139,6221037 62,4 53-55 1,5 105,70 91,05789371 64,6
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1 Appendix 16 7.8 Single Measure of Performance Cardboard Mirror Effective power (W): y = -0,6464x + 165,66 y = -0,9733x + 111,51 Effective power when X=50 (W): 133,34 62,845
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1 Appendix 17 ASAE Standard: ASAE X580 (SE-414 Voting Draft revised by P. Funk on 04/03/2002) Testing and Reporting Solar Cooker Performance Developed by the Test Standards Committee at the Third World Conference on Solar Cooking (Coimbatore, Tamil Nadu, India, 9 January 1997); editorial revisions November 1998 and July 1999; revised March 2001 (Third Latin American Congress on Solar Cookers, La Ceiba, Atlintico, Honduras); edited and submitted for approval to ASAE Solar Energy Committee SE- 414 (94 th Annual International Meeting, Sacramento, California, USA) 31 July 2001; revised and resubmitted 15 March 2002. SECTION 1 — PURPOSE AND SCOPE 1.1 This Standard is intended to 1.1.1 Promote uniformity and consistency in the terms and units used to describe, test, rate and evaluate solar cookers, solar cooker components, and solar cooker operation.
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