Practice - Case Study: Solar Water Heaters
Practice Questions
Test your understanding with targeted questions
What is the purpose of a solar water heater?
💡 Hint: Think about how sunlight relates to heating.
What color are the tubes in a solar water heater usually?
💡 Hint: Consider which colors are best for absorbing heat.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of a solar water heater?
💡 Hint: Think about what heating does to water.
True or False: Solar water heaters require electricity to operate.
💡 Hint: Consider the energy source for heating in this scenario.
1 more question available
Challenge Problems
Push your limits with advanced challenges
If a solar water heater saves a family 1200 kWh a year and they use this energy savings to power an electric heater for 4 hours a day, calculate how many additional kWh would be used by the electric heater in that time over a year. Assume the electric heater uses 2 kWh per hour.
💡 Hint: Consider how to multiply the usage per hour by daily and yearly duration.
Assuming that the cost of installing a solar water heater is $1500, calculate how long it will take for it to pay for itself with an annual saving of $144. What if energy prices increase by 10% annually?
💡 Hint: Think about how yearly savings accumulate over time and consider justifying increased costs.
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Reference links
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