7. Determine the heat loss through a ventilated attic under the following conditions: indoor temperature 21°C, outdoor temperature 10°C, roof area 260 m?, ceiling area 200 m?, ceiling U-value = 0.15 W/m?K (include films), roof U-value = 1.7 W/m²K (include films), attic ventilation = 10 L/s. Neglect the air leakage through the ceiling. Determine the attic temperature.

7. Determine the heat loss through a ventilated attic under the following conditions: indoor temperature 21°C, outdoor temperature 10°C, roof area 260 m?, ceiling area 200 m?, ceiling U-value = 0.15 W/m?K (include films), roof U-value = 1.7 W/m²K (include films), attic ventilation = 10 L/s. Neglect the air leakage through the ceiling. Determine the attic temperature.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

2. Calculate Passive House's energy demand. a, Calculate window U-value based on given data in figure. 0.117m 0.117m 0.134m C₂ Utotal Wglass-0.996m = 1.229m glass Uglass = 0.6- glass W window - 123m W m².c 0.117m 1.48m nwindow W m² °C Uframe = 1.6- Area₁ U₁ + Area2 U₂... + Area, * U₁ Area total b. With the calculated U value for the windows find out how much power needed to maintain 20°C in a home with outside of 0°C based on the following: the house having a square footprint 17 m by 17 m, walls 2.5 m high (Uwalls = 0.152 each of the four walls hosting two windows, and each window having an area of 2 m². The entry door area is 2.5 m² (Udoor = 0.65- ). What are the heat loss rates for the installed windows, the door, the walls, the ceiling, and the floor? What is the overall heat loss rate of the home? m². C 1. What do these calculated heat loss rate values mean? 2. What is the definition of the passive house? 3. What does the U-value represent? Use its unit as a hint and describe it…
Thermal Stress topic..... Use 3 decimal places for the answers
. A man weighing 740N dives into a swimming pool from a tower of height 19.6m. He was found to go down in water by 1.65m and then started rising. Find the Average resistance of water. Consider the air resistance during the dive to be 29N.
What are the differences between an open, a closed, and an isolated system? give an example for each
Using fluid liquid equation. fluid properties. Leakproof Vessel with water.
A fluid undergoes a frictionless process in a closed system form v1=5ft to v2=2ft^3 in accordance with the relation v=36/(p-8) where p is the psia and v is ft^3. During the process, the fluid rejects 30 BTU/lbm. Compute the change of heat transfer.
None
Fan efficiency is the air power static divided by the impeller power. Hence, what are the various factors, which can affect fan performance?
Please without handwriting