Q1/ consider a (0.8m) high and (1.5m) wide double pane widow consisting of two (4mm)thick layers of glass (k=0.78W/m.°C) separated by a (10mm) wide stagnant air space(k=0.026W/m.C). ). Take the (hi) on the inner surface = 10W/m2.°C and (ho) on the outersurface = 40W/ m².°C. DetermineThe steady rate of heat transfer through thisdouble pane window is equalThe temperature of its inner surface for aday during which the room is maintained at(293K) while the temperature of the outdooris (263K) is equal to *

As given that the area normal to heat transfer will be A=0.8×1.5 m2 ;⇒A = 1.2 m2 ;So the thermal…

Q1/ consider a (0.8m) high and (1.5m) wide double pane widow consisting of two (4mm) thick layers of glass (k-0.78W/m.°C) separated by a (10mm) wide stagnant air space (k=0.026W/m.°C).). Take the (hi) on the inner surface = 10W/m2.°C and (ho) on the outer surface = 40W/ m2.°C. Determine The steady rate of heat transfer through this double pane window is equal * The temperature of its inner surface for a day during which the room is maintained at (293K) while the temperature of the outdoor is (263K) is equal to *

Q1/ consider a (0.8m) high and (1.5m) wide double pane widow consisting of two (4mm) thick layers of glass (k-0.78W/m.°C) separated by a (10mm) wide stagnant air space (k=0.026W/m.°C).). Take the (hi) on the inner surface = 10W/m2.°C and (ho) on the outer surface = 40W/ m2.°C. Determine The steady rate of heat transfer through this double pane window is equal * The temperature of its inner surface for a day during which the room is maintained at (293K) while the temperature of the outdoor is (263K) is equal to *

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

Q1 An insulated ver tical cylinder Contains gas with as shown in the gure. The mass of the pston is 5ky cnd f intially, rest on the bettem et the cylnder The ylindder IS connecfed to nitrogen tank at' 01 kg et Argen the help ofa fictionless non- conducting pisten fgure Is Connected to nitegrn dank fitted with the valve. The value is opened and witregen slowly enters loo bar to a pipeling glinder During this perocrss, the piston is lifted pressure the to a heght e4 locm by Nitragen gas. the inidial cnd temperature of argen are 4 Agon as and r-167 Find the net workolone ky the Nitrogen Jook and 1 bav- The final tempemtve Is 520k, for gen gas R-0.208 Ky tg. k Angen lesulated gander tecm olm Valve Pisten Nitregen 1oo bar
A mercury makes an emole of 130 with respect to the Icertical when in con ta ct with Clean glees. How far will diameter merceery rise up or depress in a clean 1mmadierm@ler tube? TaNe surfuce tension o = 0:467 NIm Specific rality Of mercurg=l3:6 (PL= lo00Nig1 m² and density ef water
i need the answer quickly
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…
Parvinbhai
..P15 A horizontal cylinder 10 cm in diameter contains helium gas at room temperature and atmospheric pressure. A piston keeps the gas inside a region of the cylinder 20 cm long. (a) If you quickly pull the piston outward a distance of 12 cm, what is the approximate temperature of the helium immediately afterward? What approximations did you make? (b) How much work did you do, including sign? (Note that you need to consider the outside air as well as the inside helium in calculating the amount of work you do.) (c) Immediately after the pull, what force must you exert on the piston to hold it in position (with the helium enclosed in a volume that is 20 + 12 = 32 cm long)? (d) You wait while the helium slowly returns to room temperature, maintaining the piston at its current location. After this wait, what force must you exert to hold the piston in position? (e) Next, you very slowly allow the piston to move back into the cylinder, stopping when the region of helium gas is 25 cm long.…
Q1) A polished metal pipe (8 cm) owtside diameter and 350 K temperature at the outer surface is exposed to ambient conditions at 285 K temperature. The emissivity of the surface is 0.3 and the convection coefficient of heat transfer is 13.5 Wim2-deg. What would be the overall coefficient of heat transfer by the combined mode of convection and radiation” Q2 find the pressure point (1) if the amospheric pressure is(70kpajihl =0 2,h2=0.4,h3=0. ‘)(p. =13600kg/m3. poil=850kg/m3)
Required information Sometimes equations can be developed and practical problems solved by knowing nothing more than the dimensions of the key parameters. For example, consider the heat loss through a window in a building. Window efficiency is rated in terms of R value, which has the unit of ft2-hr-°F/Btu. A certain manufacturer offers a double-pane window with R = 2.5 and also a triple-pane window with R= 3.4. Both windows are 3.5 ft by 5 ft. On a given winter day, the temperature difference between the inside and outside is 45°F. How much heat is lost through the double-pane window? 315 Btu Return to question
An open tank consists of 3 immiscible liquids, in which the water is at the height of 300 cm, above which a crude oil of specific gravity of 0.65 is filled up to a height of 2000 mm, above which a coconut oil of specific gravity of 0.76 is filled for about 3 m. without considering the atmospheric pressure Find: (i) the intensity of pressure in kPa at the interface between coconut oil & crude oil (ii) the intensity of pressure in MPa at the interface between crude oil & water (iii) the intensity of pressure in N/cm? at the bottom of the tank. (ENTER ONLY THE VALUES BY REFERRING THE UNITS GIVEN) Solution: The intensity of pressure at the interface between coconut oil & crude oil (unit in kPa) = The intensity of pressure at the interface between crude oil & water (unit in MPa) = (1mark) The intensity of pressure at the bottom of the tank (Unit in N/cm2) = marl) !! Windows bui
Two horizontal
Quiz: A double-pane window consists of two 3 mm thick layers of glass separated by a 12 mm wide stagnant air space. For specified indoors and outdoors temperatures. 1. Determined rate of heat loss through the window and 2. The inner surface temperature of the window. kalass = 0.78 W/m-°C and k stagnant space = 0.026, The area of the window and the individual resistances are A=(1.2 m)x (2 m) = 2.4 m² Glass Glass Stagnant space Toi= 24 h = 10 w/m?.c To2- -5 c h2 25 w/m2.c 12 mm 3 mm mm