The wall shown in the figure consists of seven layers arranged in series. The thermal resistances of these layers in (m^2.K)/W are given below: Red Brick 0.1 Air Cavity 0.25 Polystyrene insulation 0.35 Concrete Masonry Units 0.2 Cement Plaster 0.03 Gypsum Board = 0.14 Latex Paint = 0 Take the emissivity of the interior surface as 20%, and calculate:

The wall shown in the figure consists of seven layers arranged in series. The thermal resistances of these layers in (m^2.K)/W are given below: Red Brick 0.1 Air Cavity 0.25 Polystyrene insulation 0.35 Concrete Masonry Units 0.2 Cement Plaster 0.03 Gypsum Board = 0.14 Latex Paint = 0 Take the emissivity of the interior surface as 20%, and calculate:

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter4: Mechanical Processes

Section: Chapter Questions

Problem 4.22P: Why is it so difficult to process MSW?

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How thick must the insulation layer be to achieve the requirement U = 0.18 W/m2K?A wall of ventilated facade with insulation must meet requirements:Bearing construction: Lightweight concreteλ lightweight concrete = 0.14 W/mK, d=100 mmλ insulation = 0.04 W/mK, d=? etcCold bridges 15% Guide to task 1:1) The requirement for the U-value with regard to cold bridges will be U - 15%.2)Ri for walls: 0.13 m2K/WRu for walls: 0.04 m2K/W
issues from the tank in shown at Q = 45 f3/h. Assume laminar flow conditions and neglect entrance and exit losses. (a) What is the velocity of flow in the pipe. Ans: 9.167 ft/s (b) Determine the head lost in the pipe. Ans: 7.695 feet - Determine the kinematic viscosity of the paint in ft?/s. Ans:0.0002444
Solve for what is being required. Room dimensions are: LxWxH = 8.50 m, 5.0 m, 3m. Originally, the room had linoleum flooring with an absorption coefficient of 0.03. Two opposite walls were cladded with unglazed bricks with an absorption coefficient of 0.02, the one having the entrance gypsum door (2.1 m X 0.80 m) with 0.05 abs.co.; the other two were just bare concrete with sliding glass window openings of 1.80m x 1.20 m each; the bare concrete with an abs.co. Of 0.31 and the window glass with 0.18, the ceiling, too , had bare concrete as its finish at 500 Hz. The client would like to renovate the space into an acoustical studio room and would like to change the ceiling and the flooring. The ceiling will have a vinyl faced fiberglass panel with an abs.co. of 0.71, and the floor will have mineral fiber tiles with an abs.co. Of 0.66, all at 500 Hz.
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Why is it so difficult to process MSW?
Answer ONLY items 5-8. Room dimensions are: LxWxH = 8.50 m, 5.0 m, 3m. Originally, the room had linoleum flooring with an absorption coefficient of 0.03. Two opposite walls were cladded with unglazed bricks with an absorption coefficient of 0.02, the one having the entrance gypsum door (2.1 m X 0.80 m) with 0.05 abs.co.; the other two were just bare concrete with sliding glass window openings of 1.80m x 1.20 m each; the bare concrete with an abs.co. Of 0.31 and the window glass with 0.18, the ceiling, too , had bare concrete as its finish at 500 Hz. The client would like to renovate the space into an acoustical studio room and would like to change the ceiling and the flooring. The ceiling will have a vinyl faced fiberglass panel with an abs.co. of 0.71, and the floor will have mineral fiber tiles with an abs.co. Of 0.66, all at 500 Hz.
9. A computer room located on the second floor of a five-storey office building is 10m X 7m. The exterior wall is 3.5m high and 10m long; it is a metal curtain wall (steel-backed with 10mm of insulating board), 75mm of glass fiber insulation, and 16mm of gypsum board The single-glazed window (U=5.9 W/m2-K) make-up 30% of the exterior wall. Three computer sets at 500 Watts each and 500 Watts of total lighting power in the room operate 24 hours per day. The indoor temperature is 20°C. Determine the following: a. The heat load, in Kilowatts, if the outdoor conditions is 32°C DB and 23°C WB. b. What would be the load, in Kilowatts, if the windows were double-glazed (U=3.5 W/m2•K)?
A 40m steel tape is suspended in the air between a theodolite and vertical rod, which is placed exactly at the 40m mark, under a pull of 12.5kg. The slope of the measured line is 2-degree 40minutes. The tape weighs 1kg, standard pull of 8.5kg, cross-sectional area of 0.039cm^2 and E= 2x10^6 kg/cm^2. a. Determine the correction for sag of the tape in meter.b. Determine the horizontal distance between the theodolite and rod in meters. (Apply 5-decimal places - for letter B only)c. What additional pull must be applied to eliminate the effect of sag?