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Finger [1]
3 years ago
5

An air conditioner operates exactly as a refrigerator; it removes heat from a cold place (a bedroom, for example) and conveys it

to a warmer place (usually the outside). Quantities of practical importance in understanding the efficiency of air conditioners are the rate of heat removal and the electric power input to the unit (i.e., the electric energy consumed per unit time). Find an expression for the coefficient of performance KKK of an air conditioner that has a rate of heat removal HHH and a power consumption PPP .
Engineering
1 answer:
iren2701 [21]3 years ago
6 0

The expression for coefficient of heat performance is; K = H/P

We are given the expressions;

Coefficient of performance = K

Rate of heat removal = H

Power consumption = P

Formula for coefficient of performance is usually;

K = Q/W

However, the rate of heat removal H can be further expressed as;

H = Q/T

Where;

Q is heat removed

T is time

Similarly, for power consumption, it can also be expressed as;

P = W/T

Where;

W is workdone

T is time taken

Thus, Q = HT and W = PT

Finally;

K = HT/PT

K = H/P

Read more about coefficient of performance at; brainly.com/question/13756267

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Answer:

M = 281.25 lb*ft

Explanation:

Given

W<em>man</em> = 150 lb

Weight per linear foot of the boat: q = 3 lb/ft

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Initially, we have to calculate the Buoyant Force per linear foot (due to the water exerts a uniform distributed load upward on the bottom of the boat):

∑ Fy = 0  (+↑)     ⇒    q'*L - W - q*L = 0

⇒       q' = (W + q*L) / L

⇒       q' = (150 lb + 3 lb/ft*15 ft) / 15 ft

⇒       q' = 13 lb/ft   (+↑)

The free body diagram of the boat is shown in the pic.

Then, we apply the following equation

q(x) = (13 - 3) = 10   (+↑)

V(x) = ∫q(x) dx = ∫10 dx = 10x   (0 ≤ x ≤ 7.5)

M(x) = ∫10x dx = 5x²  (0 ≤ x ≤ 7.5)

The maximum internal bending moment occurs when x = 7.5 ft

then

M(7.5) = 5(7.5)² = 281.25 lb*ft

8 0
4 years ago
What is the name of the type of rocker arm stud that does not require a valve adjustment?
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Explanation:

This specific stud rocker does not need a valve adjustment. It does not need stud girdles or pushed guide plates. It can be adjusted on a steel stanchion post.

(have a good day and I hope that this explanation fits what you needed to know!)

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Answer:

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Answer:

The description including its scope is presented throughout the section below.

Explanation:

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