7. The formula B = 30a for furnace output is used in New England to estimate the minimum furnace output B in BTUs for a modern house with a square feet of flooring.
a) Determine the minimum furnace output for a 1900-ft2 modern house.
b) Solve for a. That is, solve B = 30a for a.
a) Determine the minimum furnace output for a 1900-ft2 modern house.
b) Solve for a. That is, solve B = 30a for a.
-
B = 30a
a = 19000
B = 30*1900 = 57000 BTU This is pretty close for our area as well. I live in a place where it gets down to 30 to 40 below regularly.
B
B = 30a
a = B/30
a = 19000
B = 30*1900 = 57000 BTU This is pretty close for our area as well. I live in a place where it gets down to 30 to 40 below regularly.
B
B = 30a
a = B/30