Homework # 3 Q1: A pharmacy with dimensions (L= 10 m, W= 10 m, H= 3 m) are to be air- conditioned with 24 °C DBT and 50% RH at following details: • East wall 10 m, group No.2 with U-value =0.643 W/m²K. East Window type B, area 30% from the wall, U-value 1.2 W/m²K and Sc=0.8 The wall has also a door (2 x 2) m manufactured of Maple with a thickness of 35 mm, CLTD corrected door = 23 °C Roof type 9, U-value =4.16 W/m²K • 6 devices are all hooded with efficiency 80%, each device consume 250 watt. Occupancy of 3 pharmacists and a manager • The space is lighting by 10 fluorescent tubes of 40 watt power consumption Infiltration 0.75 ACH. . Outside conditions are 45 °C DBT and 24 °C WBT, DR=11.6 • The space is at latitude of 32°N. • Take CLF = 1 when needed. Determine the cooling load in TR from the east wall, east window, door, roof, devices, occupancy, lighting, infiltration and ventilation (based on number of people) on August at 2 p.m.

Homework # 3 Q1: A pharmacy with dimensions (L= 10 m, W= 10 m, H= 3 m) are to be air- conditioned with 24 °C DBT and 50% RH at following details: • East wall 10 m, group No.2 with U-value =0.643 W/m²K. East Window type B, area 30% from the wall, U-value 1.2 W/m²K and Sc=0.8 The wall has also a door (2 x 2) m manufactured of Maple with a thickness of 35 mm, CLTD corrected door = 23 °C Roof type 9, U-value =4.16 W/m²K • 6 devices are all hooded with efficiency 80%, each device consume 250 watt. Occupancy of 3 pharmacists and a manager • The space is lighting by 10 fluorescent tubes of 40 watt power consumption Infiltration 0.75 ACH. . Outside conditions are 45 °C DBT and 24 °C WBT, DR=11.6 • The space is at latitude of 32°N. • Take CLF = 1 when needed. Determine the cooling load in TR from the east wall, east window, door, roof, devices, occupancy, lighting, infiltration and ventilation (based on number of people) on August at 2 p.m.

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

Q2/ Compute the peak heat gains and time for the East wall of a building at 32° latitude on 16 august. The wall consists (101.6mm Tile + Air Space). The wall is 3m by 6 m with 1 x 2 m window. If the indoor and outdoor design condition are 23°C & 29.4°C and overall heat transfer of the window is 0.00591 KW/m2.C with SC=0.50
I need the answer as soon as possible
1.)An aluminum tank with a volume of 1000 liters is filled with gasoline. Both are at a temperature of 12°C. The tank is transported to a place where the temperature is 37° and, due to the difference between the volumetric expansion coefficients of the metal and the liquid, the ebb of the tank. Assuming the tank expands like a massive volume of aluminum, how many liters of gasoline overflow from the tank? Data: βaluminum=7*10-5/ºC and βgas=9.5*10-4/ºC
V:03)
Conduction Heat Transfer X material (a) material (b) . both (a) and (b) have the same thermal conductivity the temperature distribution is independent of thermal conductivity it's not that simple 9. Fin efficiency is defined as: • tanh (mL) (hP/k Ac)1/2 (heat transfer with fin) / (heat transfer without fin) (actual heat transfer through fin) / (heat transfer assuming all fin is at T = Tb) (Tx=L-Tf)/(Tb-Tf) 10. For an infinite fin, the temperature distribution is given by: (T-Tf)/(Tb-Tf)= e-mx. The heat flow through the fin is therefore given by: k (Tb-Tf)/L ● zero, because the fin is infinite ● infinite because the fin is infinite ● (Tb-Tf) (hP/k Ac)1/2 ● (Tb – Tf) (h P / k Ac)1/2 tanh (mL) 11. The Biot number, Bi, is defined as: • Bi=hk/L • Bi=hL/k • Bi= k/LH • Bi=qL/k • Bi=p UL/k 12. For a plate of length L, thickness, t, and width, W, subjected to convection on the two faces of area L x W. What is the correct length scale for use in the Biot number? . L ● W ● t • t/2 • L/2 13. If Bi…
W m-°C. 1.)A 2mx2m aluminum sheet (240 is 5mm thick and used to separate two types of gas (1.1) and (55) in an experimental chamber. The 1st type of gas is maintained at 20℃ while the 2nd gas is at -20C. Solve for the rate of heat transfer in kW.
STEAM PROCESSES
C: water flows at 50 °C inside a 2.5 cm diameter tube such that h-3500 W/m2. °C. The tube has a wall thickness of 0.8 mm with a thermal conductivity of 16 W/m.°C. The outside of the tube loses heat by convection with ho-7.6 W/m².°C. If the heat loss to the surrounding per unit length is 19 W. Calculate the surrounding air temperature.
A hot water leak in one of the faucets of your apartment can be very wasteful. A continuous leak of one quart per hour (a "slow" leak) at 155 degrees°F causes a loss of 1.81 million Btu per year. Suppose your water is heated with electricity. a. How many pounds of coal delivered to your electric utility does this leak equate to if one pound of coal contains 12,000 Btu and the boiler combustion process and water distribution system have an overall efficiency of 28%? b. If a pound of coal produces 1.81 pounds of CO2 during the combustion process, how much extra carbon dioxide does the leaky faucet produce in a year
What is the molecular mass of a gas if C =1915 J/kgK. Cy = 1.50 KJ/kgK and universal gas constant 8.314 KJ/kmolK? Select one: O a. 30 O b. 15 O .20 O d. 25
pls answer this
Q.2 The following data relates to the office air conditioning plant having maximum seating capacity of 25 occupants : Recirculated air Room Outside air 4) to = 34°C tm = 28°C ta2 = 24°C $2 = 50% Mixing Coil Outside design conditions: 34°C DBT, 28°C WBT Inside design conditions: 24°C DBT, 50% RH Solar heat gain= 9120 W Latent heat gain per occupant= 105w Sensible heat gain per occupant=90w Lightening load= 2300 W Sensible heat load from other sources= 11630 W Infiltration load= 14 m³/min Assuming 40% fresh air and 60% of recirculated air passing through the evaporator coil and the by-pass factor of 0.15. Draw the process on psychrometric chart and find the dew point temperature of the coil and capacity of the plant.