Insulation

Question 1

you are designing a medium sized office building in a cold climate. How much insulation should you put in the roof?

Answer 1

How high-performance do you want the building to be?

For cold climates:
Roof Wall Floor Window
35 19 21 3

12” Thickness for roof. 10.5” think I ss for insulation if we do consider the thermal bridging. If you want to address the thermal bridging you need to have 12” thick insulation

almost Minos 10:
For hot climates:
Roof Wall Floor Window
25. 8. 10 2

Question 2

Insulation for high performance house

Answer 2

5 10 20 40 60
5(windows)
10 ( foundation slab)
20( foundation wall)
40 ( above ground walls)
60 (roof)

Question 3

ASHRAE

Answer 3

90.1 ENERGY AND LIGHTING USE BASELINE
62.1 VENTILATION BASELINE
55. THERMAL COMFORT BASELINE

Question 4

when we have a wall assembly with two tall, R-value of X, how can we measure the temperature in each point in a wall assembly?

Answer 4

First:
What is the total Delta T? Outside and inside Delta T.

What is the total R-value

This is the formula:
A(any point of a wall assignments mbly) : T (out) + [(R out/ R Total) x DT)

Question 5

How many BTUs are required to move 1 pound of water one degree

Answer 5

1 BTU

Question 6

Cold climate

Answer 6

Compact
No north window
2 story is always better
More insulation
Ticking the cavity for insulation
On the slope? Toward south and 1/4 of the slop up

Earth sheltering is excellent for thermal control
Garage on the north wall (we will not use heat)

High-performance south window (mean low u-value) airtight
On the south

Evergreen trees for wind-breaking
Aine lock or vestibule for entrance on the south

Use a clerestory or dormer instead of a skylight especially south-facing

Stretch the building east-west
Dark colors
Active solar collectors

Question 7

Courtyard

Answer 7

Hot arid climate
Elongate it in west-east axes to minimize the east-east exposure
We do not want to have. A lot of windows
Thermal mass
Courtyard
Bright colors
Sunshade for windows 
We want other buildings to shade our building so the courtyard is a good idea
Small windows
Avoid building on the east and west slope
Plant for shading
Bright colors but not too much
Use night ventilation