A gasoline engine has a power output of 150 kW. If its thermal efficiency is 33%,...

A gasoline engine has a power output of 150 kW. If its thermal efficiency is 33%, how much heat must be supplied to keep the engine running for 18 s to reach the end of a street? (in J) (Note: express your answer in scientific notation, for instance: 3.14

Expert Solution

We know that

Efficiency = E= Pout / Pin

Pin = Pout/ E

= (15010³) / 33%

Pinp = (150)(10³)(100)/33

Pinp =454545.45

We know that

W=Q= Pinp(18)

=(454545.45)(18)

=8181818.1J

Q =8.610⁶ J

genius_generous answered 6 days ago

A three phase engine has an usable power of 90 kW and an efficiency of 91%....

A three phase engine has an usable power of 90 kW and an efficiency of 91%. The rating plate indicates the following values: - 90 kW - Power factor: 0.89 (i) - Voltage (volts): 230 delta - 400 wye Taking as a reference of line voltages V1=V∠90º; direct sequence and a phase oltage of the supply network of 230 V, find: a) The phasors of the line and phase voltages of the supply network b) The true, reactive and apparent...

A Carnot heat engine has an ideal efficiency of 34% and produces 25 kW of output...

A Carnot heat engine has an ideal efficiency of 34% and produces 25 kW of output power. At what rate (MJ/h) must it discharge heat when operating at full power?

Definition of Work, Energy,Power, and Torque In Gasoline Engine

Lets say that we are testing an engine that produces 17 kW of power. As this...

Lets say that we are testing an engine that produces 17 kW of power. As this engine is operating, it absorbs 95 kW of heat from the surrounding air at 17 C. The air is then exited from a combustor into a room at 20 C. What is the reversible power? Group of answer choices -32.9 kW 32.9 kW 5.882 kW -5.882 kW

A nuclear power plant has an overall efficiency of 31% and a power output of 800MW....

A nuclear power plant has an overall efficiency of 31% and a power output of 800MW. For one year operating at full capacity, calculate a) the number of joules produced; b) the number of fission events that were required to produce those joules; c) the mass of uranium oxide (UO2) that has been used in fission; and d) the market cost of that uranium oxide if it was all high quality.

The physical size of an synchronous generator has a profound effect upon its efficiency, power output,...

The physical size of an synchronous generator has a profound effect upon its efficiency, power output, relative cost, and temperature rise. Discuss and analyze why these characteristics are intimately related.

An ideal diesel engine uses air as the working fluid and operates with a thermal efficiency...

An ideal diesel engine uses air as the working fluid and operates with a thermal efficiency ?th =0.5 with a rate of heat addition Qin=120 kW. The temperature at the beginning and the end of the addition heat (combustion) are respectively: T2=900 K and T3=2100 K. Assume constant specific heats (Cp and Cv). The air properties at a room temperature T1=293.0 K are: Cp=1.005 kJ/kg.K, Cv=0.718KJ/kg.K, the gas constant of air is R=0.287 kJ/kg.K and the ratio of specific heats...

A 400-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency...

A 400-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 33 percent. (i) Sketch an appropriate illustration for this heat engine clearly showing the heat source and sink. (ii) Determine the rate of heat transfer to the river water. (iii) Will the actual heat transfer rate be higher or lower than this value? Why?

A possible measure of efficiency of an engine is the power it produces for each unit...

A possible measure of efficiency of an engine is the power it produces for each unit of volume. The efficiency may be measured for each car using the ratio between the power and the volume of the engine. Consider, for each car, the ratio between the power of the engine measured in horsepower and the volume of the engine measured by the volume swept by all the pistons inside the cylinders in cubic inches. Call this variable Y. In Chapter...

why thermal power plants have minimum and maximum output

Question