For the disciplines «Non-traditional and renewable energy sources»
Ministry of Agriculture of the Republic of Kazakhstan
S. Seifullin Kazakh Agro Technical University
«Heat-power engineering» department
For the disciplines «Non-traditional and renewable energy sources»
For master students of specialty 6M071700 - Heat-power engineering
Examination ticket №1
1. Sources of energy, renewable energy use. The principles of energy planning.
2. The construction of solar cells. Limiting the effectiveness of solar cells.
3. BandgapCaAs =1.4 eV. Calculate the optimal emission wavelength for the photovoltaic generation of the solar cell arsenide helium.
Doctor of Technical Sciences,professor________Dostiyarov A.M.
Ministry of Agriculture of the Republic of Kazakhstan
S. Seifullin Kazakh Agro Technical University
«Heat-power engineering» department
For the disciplines «Non-traditional and renewable energy sources»
For master students of specialty 6M071700 - Heat-power engineering
Examination ticket №2
1. Scientific principles of renewable energy use. Characteristics. Power quality. Analysis.
2. Hubs solar energy. Solar systems for electricity generation.
3. А) Write down the equation for the current-voltage characteristics of the diode with a p- n- transition in the dark.
B) If the saturation current density of А* , what is the current-voltage characteristic of the element? Calculate and draw it into a graph to 0.2 V.
Doctor of Technical Sciences,professor________Dostiyarov A.M.
Ministry of Agriculture of the Republic of Kazakhstan
S. Seifullin Kazakh Agro Technical University
«Heat-power engineering» department
For the disciplines «Non-traditional and renewable energy sources»
For master students of specialty 6M071700 - Heat-power engineering
Examinationticket№3
1. TechnicalproblemuseRES
2. Sunny-heating system. cooling air.
3. Increasetemperatureinreceiver. Consider flat lamellar heater, sizes which 2*0,8 , resistance heat loss =0.13 *К* and coefficient heat transfer =0,85. Transmittanceglasscover0,9; coefficientabsorptionplate0,9. Temperatureincominginreceiverliquid =400C. Temperature ambient air =200C, stream radiant energy in plane reception areas G=750 W * .
А) Calculate speed pumping, which it is necessary for increase temperature water in receiver on 4 0C.
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B) Suppose, what pump continues work and at night, when G=0. As will decline temperature water for each passage through receiver? (suppose, that =400C, =200C)
Doctor of Technical Sciences,professor________Dostiyarov A.M.
Ministry of Agriculture of the Republic of Kazakhstan
S. Seifullin Kazakh Agro Technical University
«Heat-power engineering» department
for the disciplines «Non-traditional and renewable energy sources»
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