All tools

$[$ Export a PDF

$$ Edita PDF

$$ Create a PDF

$$ Combine files

$$ Organize pages

$[$ Al Assistant $($beta$)$

$$ Generative summary $($beta$)$

Request e$-$signatures

Scan & OCR

Protect a PDF

Redact a PDF

Compress a PDF

Prepare a form

View more

Convert, edit and e$-$sign

forms & agreements.

Free $7-$day trial

Q$5(5\%)$ A green roof is one of the sustainable building design methods which is covered with vegetation on the roof having additional $R-$value of roof and evaporation on vegetation surfaces. An architect wishes to compare the performance of the original design $($left$)$ and green roof addition $($right$)$ and asks your help. For the original design, we have $Q_{\text{s}\text{h}\text{o}\text{r}\text{t}\text{w}\text{a}\text{v}\text{e}\text{r}\text{a}\text{d}\text{i}\text{a}\text{t}\text{i}\text{o}\text{n}\text{,}}{Q}_{\text{l}\text{o}\text{n}\text{g}\text{w}\text{a}\text{v}\text{e}}$ radiation, $Q_{\text{c}\text{o}\text{n}\text{v}\text{e}\text{c}\text{t}\text{i}\text{o}\text{n}\text{,}\text{a}\text{n}\text{d}}{Q}_{\text{c}\text{o}\text{n}\text{d}\text{u}\text{c}\text{t}\text{i}\text{o}\text{n}}$ through the roof. Note that the arrows are indicative of heat transfer directions. For green roof case, we have the same condition of the original case but with a vegetation layer for evaporation $($ignore the conduction of this vegetation layer due to its very thin thickness$)$ and a soil layer for conduction. Calculate the roof indoor surface temperature $(T$ surf, in$)$ for each case to evaluate the green roof design. Describe your results with respect to the impact of green roof addition.