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ArbitrLikvidat [17]

2 years ago

5

Best known for his invention of the pressure-ignited heat engine that bears his name,

1 answer:

vfiekz [6]2 years ago

8 0

I think it’s b Rudolf Deisel

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What are the four processes of the Carnot cycle? Sketch the Carnot cycle (a) on T-s (temperature - entropy) and P-V (pressure -

Tanya [424]

Answer:

$\eta = 0.7315$

Explanation:

Carnot cycle

Carnot cycle have four process

1. Iso thermal expansion

2.Reversible adiabatic expansion

3. Iso thermal compression

4.Reversible adiabatic compression

This is ideal cycle for all work producing devices.All devices have efficiency less than Carnot cycle. Because in Carnot cycle all process is reversible process.

Efficiency of Carnot cycle given as

$\eta =1-\dfrac{T_1}{T_2}$

But temperature must be in Kelvin

So

$\eta =1-\dfrac{288}{1073}$

$\eta = 0.7315$

5 0

2 years ago

Which state did NOT have people that got sick from the

12345 [234]

New jersey has the least amount out of all of these.
california : 98
new jersey : 17
tennessee : 64
florida : 49

3 0

2 years ago

What is the command this line of code is telling the robot?

podryga [215]

Answer:

drive the car

Explanation:

4 0

2 years ago

Read 2 more answers

A reversible refrigeration cycle operates between cold and hot reservoirs at temperatures TC and TH, respectively. (a) If the co

podryga [215]

Answer:

a) $T_{H} = 1.967\,^{\circ}F$ , b) $COP_{R} = 9.105$ , c) $T_{H} = 115.934\,^{\circ}F$ , d) $COP_{R} = 6.995$ , e) $T_{H} = 25.129\,^{\circ}C$

Explanation:

a) The coefficient of performance of the reversible refrigeration cycle is:

$COP_{R} = \frac{T_{C}}{T_{H}-T_{C}}$

$10 = \frac{419.67\,R}{T_{H}-419.67\,R}$

The temperature of the hot reservoir is:

$10\cdot T_{H} - 4196.7 = 419.67$

$T_{H} = 461.637\,R$

$T_{H} = 1.967\,^{\circ}F$

b) The coefficient of performance is:

$COP_{R} = \frac{273.15\,K}{303.15\,K-273.15\,K}$

$COP_{R} = 9.105$

c) The temperature of the hot reservoir can be determined with the help of the following relation:

$\frac{Q_{C}}{Q_{H}-Q_{C}} = \frac{T_{C}}{T_{H}-T_{C}}$

$\frac{500\,BTU}{600\,BTU-500\,BTU} = \frac{479.67\,R}{T_{H}-479.67\,R}$

$5 = \frac{479.67\,R}{T_{H}-479.67\,R}$

$5\cdot T_{H} - 2398.35 = 479.67$

$T_{H} = 575.604\,R$

$T_{H} = 115.934\,^{\circ}F$

d) The coefficient of performance is:

$COP_{R} = \frac{489.67\,R}{559.67\,R-489.67\,R}$

$COP_{R} = 6.995$

e) The temperature of the cold reservoir is:

$8.9 = \frac{268.15\,K}{T_{H}-268.15\,K}$

$8.9\cdot T_{H} - 2386.535 = 268.15$

$T_{H} = 298.279\,K$

$T_{H} = 25.129\,^{\circ}C$

8 0

2 years ago

The mechanical advantage of a screw is always ____________________ than/to 1. Question 5 options: less, greater, equal, none of

torisob [31]

Answer:well u can use to make a shelter but that's all I can think of ??

Explanation:

3 0

2 years ago