Total cooling load; Moisture removed per hour; Minimum diameter of the fresh air duct so that the velocity in the duct does not exceed 3 m/s.
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- Calculate the total cooling load for a building at 32° North latitude at time 14 on 21 of August, outdoor design temperature 35 °C, daily range DR = 11.1 deg ⁰C and indoor design temperature 25.5°C. The building has the following data: A-The ceiling is constructed from 152.4 mm lightweight concrete (I.W concrete) and without a suspended ceiling, dark colour (k = 1) and no mechanical ventilation (f = 1) . Area= 25 m². B-South window consists of 3 mm one layer without internal shading, area=4 m², U = 4.5 W/m2 °C. Assume shading coefficient SC = 1 and cooling load temperature difference CLTD=7 °C and cooling load factor CLF=0.55. C- West wall is constructed from 101.6 mm heavyweight concrete wall+finish (H.W. concrete wall+Finish) (group E) and medium colour (k = 0.83) Area= 17.5 m². D-There is another window that has one hinge that causes an infiltration rate of 5 L/(s.m) of infiltrated air. The moving window has a height of 1.5 m and a width of 1 m. E- Four occupants in the…A two-story building of volume of 540 m3 has an effective air leakage area of 510 cm2. The outdoor and indoor design temperatures for winter conditions are í10°C and 20°C respectively. The average design wind speed is 7msí1. The house is sheltered by other houses across the street. Estimate (i) the air infiltration rate, and (ii) the air exchange rate per hour.b.) calculate the outside air flow for the restaurant dining area where cold air is supplied from the ceiling, lit/sec
- Air at 30 deg. Celsius and 110KPa flows at 20N/s through a rectangular duct that measures 160mm x 320mm. Compute the average velocity (m/s) and flow rate (? ^3/s) using gas constant equal to 289 J/kg-K.A rectangular lot was measured using a 50-m steel tape at 30 oC. If the recorded length and width of the lot are 197.56m and 105.63m respectively. Determine the Error in the area, if the coefficient of thermal expansion is 0.0000116/ oC and standard temperature of the tape is 25 oC. detailed solution pls thank youFor an air-conditioning system, the outdoor and indoor design dry bulb temperatures are 45°C and 25°C respectively. The space to be air-conditioned Is 20m x 30m x 5m and infiltration is estimated to be one alr are 1.2 (kg of dry air)/m³ and 1.02 kJ/(kg of dry air) °C, then the sensible heat load due to Infiltration is, nearly
- The open tank has a four (4) liquids inside. The absolute pressure at the bottom is 350 kPA and the specific gravity of three liquids oil, water, mercury is 0.88, 1, and 13.6 respectively. The olive is one of them, determine its specific gravity if the height of four liquids oil, water, olive and mercury is 1.45m, 2.45m, 2.8m and 0.39m respectively. And draw the open tank with a consecutive layer of four liquids. Notes: Atmospheric pressure is 101.03 kPa since the tank is open, the atmospheric pressure is included.While the pressure remains constant at 85 psig, the volume of air changes from 20 ft3 to 12 ft3. Find the amount of work done on or by the closed system?A room 3.6m x 5m x 8m fully replaces inside air after 3 hours. If the temperature from the outside is 80 F and temperature inside is 60F. Determine the ventilation heat load in Watts. subject Engineering utilities 2
- A warehouse measures 40 feet by 50 feet and has 20-foot-high walls. Thewarehouse was built on a concrete slab and has 6 inches of insulation inthe wood frame walls and 91⁄2 inches in the ceiling. There are no windowsin the building, and the door is made just like the walls. What is the heat loadfor this warehouse in an area where there is a 75°F design temperaturedifference?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.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.