Estimate how much hot water you would use for your personal needs for one week d

Question

Estimate how much hot water you would use for your personal needs for one week during a typical winter school break. If you want to use solar energy to provide the hot water (assume 75°C), estimate what surface area of flat-plate collectors would be required if were located in Denver, CO. How is this collector oriented? State and justify all assumptions made. 1. 2. Using Matlab, develop a sunpath for the latitude of Durango, CO. Plot the sunpath for the 21st day of Dec, Jan, Feb, Mar, April, May, and June

Explanation / Answer

If we talk about typical winters (ie- temperature around -5 °C min to 5 °C max) ,average requirement of hot water is around 1.5-2 gallons per person.

Now if we talk about Solar flat plate collectors it is basically range in size from about 3 square metres or 32 square feet or and can have weigh around 205 pounds. 1000 cm2 which is around one square foot heats about 1.5-2 gallons water per day to well over 75oC..

In general, you will need around 10 to 16 ft2 of flat plate collector area for a single person use and around 1.5 to 2.0 gallons of hot water storage per square foot of flate plate collector area.

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Thanking You

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