Question: How many liters of water per minute did Shuman's engine pump in litres?
Answer: 22,000

Question: In what decade were Shuman's ideas about solar energy revived?
Answer: the 1970s

Question: Where was the first solar thermal power plant built?
Answer: Maadi, Egypt

Question: What was used to power the plants engine?
Answer: parabolic troughs

Question: From what river did the engine pump water?
Answer: Nile River

Question: What slowed down the growth of solar energy?
Answer: the outbreak of World War I and the discovery of cheap oil

Question: When was the interest in solar energy restored?
Answer: the 1970s

Question: According to Shuman, up to what percentage of domestic hot water can be  provided by solar heating systems?
Answer: 70

Question: What do Solar hot water systems use to heat water?
Answer: sunlight

Question: How much hot water can be produced by solar heating systems in low geographical latitudes?
Answer: 60 to 70% of the domestic hot water

Question: What is a common type of solar water heater?
Answer: evacuated tube collectors

Question: What type of solar water heater is used to heat pools?
Answer: unglazed plastic collectors

Question: What was the total capacity of solar hot water systems in 2007 in gigawatts?
Answer: 154

Question: Over 90% of homes use solar hot water systems in which two countries?
Answer: Israel and Cyprus

Question: What is the capacity of a solar hot water system?
Answer: approximately 154 thermal gigawatt

Question: What country is the leader in the implementation of solar powered hot water systems?
Answer: China

Question: What percentage of households use solar hot water systems in Israel and Cyprus?
Answer: over 90%

Question: In what countries is the use to solar hot water used mainly for w=swimming pools?
Answer: United States, Canada and Australia

Question: What percentage of energy in commercial buildings comes from HVAC systems?
Answer: 50

Question: How much energy does an HVAC system use in commercial locations?
Answer: 30% (4.65 EJ/yr)

Question: How much energy does an HVAC system use in residential locations?
Answer: 50% (10.1 EJ/yr)

Question: What can be used to balance out a portion of the energy used by HVAC systems?
Answer: Solar heating, cooling and ventilation technologies

Question: Materials that can be used to store heat are known as what kind of mass?
Answer: Thermal

Question: What is thermal mass?
Answer: any material that can be used to store heat

Question: What are typical thermal mass material?
Answer: stone, cement and water

Question: How is thermal mass used to keep buildings cool?
Answer: by absorbing solar energy during the day and radiating stored heat to the cooler atmosphere at night

Question: What is a something that determines the size of thermal mass?
Answer: climates

Question: What does thermal mass reduce the need for?
Answer: auxiliary heating and cooling equipment

Question: What kind of system is a solar chimney?
Answer: passive solar ventilation

Question: What is a solar chimney?
Answer: a passive solar ventilation system

Question: What is a solar chimney made of?
Answer: a vertical shaft connecting the interior and exterior of a building

Question: How can the performance of a solar chimney be improved?
Answer: by using glazing and thermal mass materials in a way that mimics greenhouses

Question: The placement of deciduous trees on the Equator facing side of a building can have a negative effect on solar availability in which season?
Answer: winter

Question: What is something that is used to control solar heating and cooling?
Answer: trees and plants

Question: How much solar radiation is blocked by leafless trees?
Answer: 1/3 to 1/2

Question: Why should trees not be planted on the side of a building facing the equator?
Answer: they will interfere with winter solar availability

Question: What side of a building should trees be planted without greatly affecting solar gain in the winter?
Answer: east and west

Question: Horace de Saussure built the first box cooker in what year?
Answer: 1767

Question: Reflector cookers can reach temperatures in Celsius of up to what?
Answer: 315

Question: What are solar cookers used for?
Answer: cooking, drying and pasteurization

Question: What are the 3 main categories of solar cookers?
Answer: box cookers, panel cookers and reflector cookers

Question: Who created the box cooker?
Answer: Horace de Saussure

Question: What is the typical temperature range for a box cooker?
Answer: 90–150 °C (194–302 °F)

Question: What do reflector cookers require to function?
Answer: direct light

Question: The Solar Total Energy Project had a field of how many parabolic dishes?
Answer: 114

Question: Are transpired collectors more or less cost-effective than glazed collection systems?
Answer: more

Question: What are some examples of solar concentrating technologies?
Answer: parabolic dish, trough and Scheffler reflectors

Question: What was the first commercial solar concentrating system?
Answer: Solar Total Energy Project (STEP) in Shenandoah, Georgia, USA

Question: What is one of the oldest uses of solar energy?
Answer: use of evaporation ponds to obtain salt from sea water

Question: What are some items used to dry clothes without the use of electricity?
Answer: Clothes lines, clotheshorses, and clothes racks

Question: What are Unglazed transpired collectors?
Answer: perforated sun-facing walls used for preheating ventilation air

Question: In what year was a large scale solar distillation project constructed in Las Salinas?
Answer: 1872

Question: What is used to make saline or brackish water drinkable?
Answer: Solar distillation

Question: By who was the first record of solar distillation done by?
Answer: 16th-century Arab alchemists

Question: When was the first large solar distillation plant created?
Answer: 1872

Question: How much water was produced by the plant?
Answer: 22,700 L (5,000 imp gal; 6,000 US gal) per day

Question: What is an example of a solar distillation design?
Answer: single-slope

Question: Solar water disinfection is recommended by which organization?
Answer: the World Health Organization

Question: How long should the plastic bottles filled with water be exposed to sunlight during Solar water disinfection?
Answer: a minimum of six hours to two days during fully overcast conditions

Question: What does the World Health Organization say about Solar water disinfection?
Answer: a viable method for household water treatment and safe storage

Question: How many people use Solar water disinfection to disinfect their drinking water?
Answer: Over two million people in developing countries

Question: What is a possible negative effect of algae in water stabilization ponds?
Answer: toxic chemicals

Question: For what reason would solar energy be used in a water stabilisation pond?
Answer: to treat waste water without chemicals or electricity

Question: What is a reason why the water from a water stabilisation pond may be unusable?
Answer: algae may produce toxic chemicals

Question: By what year is solar power expected to become the world's greatest source of electricity?
Answer: 2050

Question: When is solar power is foreseen to become the largest source of electricity?
Answer: 2050

Question: The largest solar power plant in the world is located in what desert?
Answer: the Mojave Desert

Question: Less than 1% of the world's total grid electricity was generated by solar energy in what year?
Answer: 2013

Question: What is the largest solar power plant in the world?
Answer: 354 MW SEGS CSP

Question: Where is the largest solar power plant in the world located?
Answer: Mojave Desert of California

Question: What are the largest photovoltaic solar power plants?
Answer: The 250 MW Agua Caliente Solar Project, in the United States, and the 221 MW Charanka Solar Park in India

Question: In the 1880s, who constructed the first solar cell?
Answer: Charles Fritts