Fox News – Breaking News Updates

latest news and breaking news today

A Carnot engine is operated between two heat reservoirs at temperatures of 520K and 300K.?

source : yahoo.com

A Carnot engine is operated between two heat reservoirs at temperatures of 520K and 300K.?

a)

The net entropy change of the engine per cycle equals zero. On the one hand it gains entropy by absorbing heat from hot reservoir and some entropy may be produced within the engine due to irreversibilities . On the other hand it looses entropy by discarding heat to the cold reservoir.

∆S_hot + ∆S_irr = ∆S_cold

Since heat transfer occurs at constant temperature:

Q_hot/T_hot + ∆S_irr = Q_cold/T_cold

For an ideal Carnot engine, which operates reversibly – i.e. ∆S_irr=0:

Q_hot/T_hot = Q_cold/T_cold

Hence,

Q_cold = (T_cold/T_hot)∙Q_hot

= (300K / 520K) ∙ 6.45kJ

= 3.72kJ

b)

The net energy change of the heat engine equals zero, too. So the heat transferred to the engine equals the heat discarded plus the work done by the engine:

Q_hot = Q_cold + W

Hence,

W = Q_hot – Q_cold

= 6.45kJ – 3.72kJ

= 2.73kJ

c)

Thermal efficiency is defined as the ratio of useful work done to heat absorbed:

ŋ = W/Q_hot

= 2.73kJ / 6.45kJ

= 0.423

= 42.3%

(Solved) - A Carnot engine is operated between two heat...

(Solved) – A Carnot engine is operated between two heat… – …between two heat reservoirsat temperatures of 520 K and 300 K. What is thermal efficiency of the engine? two heat reservoirs at temperatures of 520 K and 300 K. What is thermal efficiency of the engine? Solution: Step 1: Given data T1 = 520 K T2 = 300 K Step 2: To find: Thermal……is operated between two heat reservoirs at temperatures 520 K and 300 K. If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K?This simplest heat engine is called the Carnot engine, for which one complete heating/cooling, expanding/contracting cycle back to the original gas volume and temperature is a Carnot cycle In a complete cycle of Carnot's heat engine, the gas traces the path abcd. The important question is…

Answered: A Carnot engine is operated between two… | bartleby – The Carnot Efficiency is the theoretical maximum efficiency one can get when the heat engine is operating between two temperatures For a coal fired utility boiler, the temperature of high pressure steam would be about 540 degrees C and T cold , the cooling tower water temperature…A Carnot engine operating between two given temperatures has the greatest possible efficiency of any heat engine operating between these two equals the area inside the path ABCDA. Also shown is a schematic of a Carnot engine operating between hot and cold reservoirs at temperatures.A Carnot engine operating between two given temperatures has the greatest possible efficiency Any heat engine using reversible processes and operating between these two temperatures will In kelvins, then, Th = 573 K and Tc = 300 K, so that the maximum efficiency is [latex]\displaystyle{Eff}…

Answered: A Carnot engine is operated between two… | bartleby

Carnot Cycle | The Ultimate in Fuel Efficiency for a Heat Engine – A reversible heat engine operates between 300K and 600K. If heat output is 200 kJ, what is While working between temperatures 150 K and 300 K, the entropy change experienced by the Carnot A Carnot engine uses reservoirs at temperatures of 27.0 degrees C and 327 degrees C. In one cycle…For example a carnot engine is operated between two heat reservoirs at temperatures of 500K and 300K. I know is receives more from the hot than it rejects so would I set up a proportional equation and take 200/500 then multiply by 300? this gives me 120cal…A Carnot engine operating between two given temperatures has the greatest possible efficiency of any Carnot also determined the efficiency of a perfect heat engine—that is, a Carnot engine. The actual reservoir temperatures of a heat engine are usually related to the type of heat source and…

The Second Law Of Thermodynamics | University Phy…
SOLVED:A Carnot Engine Is Operated Between Two He…
Solved: A Carnot Engine Is Operated Between Two Heat Reser
When An Ideal Gas Is Expanded In Volume At Constant
Answered: Q2. A Carnot Engine Is Operated Between… | Bartleby
Solved: A Carnot Engine Is Operated Between Two Heat Reser
Solved: A Carnot Engine Is Operated Between Two Heat Reser
A Carnot Engine Whose High-temperature Reservoir
[Solved] A Carnot Engine Is Set Up To Produce A Certain
Solved: A Carnot Engine Is Operated Between Two Heat Reser
The Second Law Of Thermodynamics | University Phy…

BMW Excessive Coolant Pressure Possible Blown Head Gasket??? – .