The design condition for a space is 77 F (25 C) db and 50 percent relative...

The design condition for a space is 77 F (25 C) db and 50 percent relative humidity with 55 F (13 C) db supply air at 90 percent relative humidity A 50-ton, constant-volume space air conditioning system uses face and bypass and water temperature control. Outdoor air is supplied at 95 F (35 C) db, 60 percent relative humidity with a ratio of 1 Ibm (kg) to 5 Ibm (kg) return air. A part-load condition exists where the total space load decreases by 50 percent and the SHF increases to 90 percent. The outdoor air condition changes to 85 F (29 C) db and 70 percent relative humidity. Assume sea-level pressure. (a) At what temperature must the air be supplied to the space under the part-load condition? (b) If the air leaving the coil has a dry bulb temperature of 60 F (15 C), what in the ratio of the air bypassed to that flowing through the coil? (c) What is the apparatus dew point temperature for both the design and part-load conditions? (d) Show all the processes on a psychrometric chart.

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samet mamat answered 2 years ago

A space is to be maintained at 26°C DB and 50% RH at a location where...

A space is to be maintained at 26°C DB and 50% RH at a location where the summer design conditions are 35°C DB and 27°C WB. In the system, 30% fresh air is used for the comfort of occupants. The cooling coil in the AHU has an apparatus dew point temperature of 9.5°C, and a by-pass factor of 0.25. The fan, supplying 36,000 m3/h air, in the AHU has a motor with an electricity consumption rate of 32 kW. Assuming...

A 50 kg Astronaut is floating in space, at rest relative to her spaceship. The 5kg...

A 50 kg Astronaut is floating in space, at rest relative to her spaceship. The 5kg canister she used for getting around has run out of gas. To get back to the spaceship she decides to throw the canister in the opposite direction. a) What is the total momentum of the astronaut-canister system after the throw (relative to the spaceship)? b) If the canister moves away at a speed of 20 m/s, what is the Astronaut’s speed toward the spaceship?

Your portfolio is invested 25% each in A and C, and 50 percent in B. What is the expected return of the portfolio?

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A space station has an interior volume of 50m ^ 3 and at 25 °C it...

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Given the following heats of formation (ΔH°f, 25°C) and heats of combustion (ΔH°c, 25°C) data, determine...

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Steam at 100°C is blown into an airstream at 21°C dry bulb, 50% saturation (Relative humidity),...

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Using the end result at 25 years for 3% as the base, compute the relative difference as a percent at 25 years for 5%, 7% and 10%.

1 $1,030.00 $1,050.00 $1,070.00 $1,100.00 2 $1,060.90 $1,102.50 $1,144.90 $1,210.00 3 $1,092.73 $1,157.63 $1,225.04 $1,331.00 4 $1,125.51 $1,215.51 $1,310.80 $1,464.10 5 $1,159.27 $1,276.28 $1,402.55 $1,610.51 6 $1,194.05 $1,340.10 $1,500.73 $1,771.56 7 $1,229.87 $1,407.10 $1,605.78 $1,948.72 8 $1,266.77 $1,477.46 $1,718.19 $2,143.59 9 $1,304.77 $1,551.33 $1,838.46 $2,357.95 10 $1,343.92 $1,628.89 $1,967.15 $2,593.74 11 $1,384.23 $1,710.34 $2,104.85 $2,853.12 12 $1,425.76 $1,795.86 $2,252.19 $3,138.43 13 $1,468.53 $1,885.65 $2,409.85 $3,452.27 14 $1,512.59 $1,979.93 $2,578.53 $3,797.50 15 $1,557.97 $2,078.93 $2,759.03 $4,177.25 16 $1,604.71 $2,182.87 $2,952.16 $4,594.97...

Design of circular slab with simply supported condition. Effective span = 5.4 m c/c Floor finish...

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Let A, B and C be mutually independent events of a probability space (Ω, F, P),...

Let A, B and C be mutually independent events of a probability space (Ω, F, P), such that P(A) = P(B) = P(C) = 1 4 . Compute P((Ac ∩ Bc ) ∪ C). b) [4 points] Suppose that in a bicycle race, there are 19 professional cyclists, that are divided in a random manner into two groups. One group contains 10 people and the other group has 9 people. What is the probability that two particular people, let’s say...

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