The average home has a 200 liter (50-60 gallon) hot-water tank, which is effectively drained and replenished three times per day. Assume that the entering tap water is 19 degrees C and is heated to 51 degrees C. Given an average energy from sunlight of 1.53 kJ/cm2 per day, how large would the collection area (in m2) of a solar water heater need to be if its efficiency is 26%? Assume that the price of a solar collector is $375/m2. How much would it cost to install this hot water system?
I don't know where to begin on this. Please give me the answers and formulas used.© BrainMass Inc. brainmass.com October 9, 2019, 4:49 pm ad1c9bdddf
To solve this problem we need to know how much heat the avergae home needs per day.
heat(q) = mass(m)*specific heat(s)*change in temperature
Mass = (200L)*3 refills = 600L*(1 Kg/1 L) = ...
The question is solved step-by-step equationally with short explanations throughout.