Sentences with phrase «efficiency of heat engines»

Even more amusingly, when you say «very little energy from the system» you are implicitly assuming on the one hand that the second law and its restrictions on the efficiency of heat engines is valid, so one is limited by the Carnot efficiency, while describing a macroscopic collective system that is 100 % efficient at converting heat into work.

To do that, hybrid - vehicle engineers have identified two crucial areas for development: increasing the efficiency of electric drives and optimizing the thermal efficiency of heat engines.

I am always glad to find one of the few who understand that you can not convert kWhrs of heat to kWhrs of electricity without considering efficiency of the heat engine involved.

My understanding is that this is a result of the efficiency of a heat engine, that is equal to (1 — TempLow / TempHigh).

Not exact matches

The company's use of energy - efficiency measures — including the use of reverse heat engines, heat exchangers and water reduction efforts — have greatly reduced its water and energy consumption, King says.

That said, the efficiency of the atmospheric heat engine is rather low; from time to time, inefficiency causes the disparity between the warm source and the cold sink to increase.

The aerodynamics of the turbine blades affects the efficiency of the engine, while the heat transfer from the extremely hot gas to the turbine blades is harmful to the life - span of the turbine.

What happened to the heat engines invented in 1816 by Robert Stirling that could significantly boost the efficiency of these power stations?

In the familiar heat engine model at macroscopic scale, referred to as the Carnot heat engine, the efficiency increases as a function of the ratio between the temperatures of the low - and high - temperature baths.

By comparison, the efficiency of two - level quantum heat engines is related to the level of quantum entanglement in these two states, which are either at a low or a high temperature, and display the same probability of being occupied.

The authors found that their heat engine model only yields high efficiency and output power when the number of photons involved is small; accordingly, its efficiency and power output rapidly decrease as the number of photons increases.

«Quantum manipulation power for quantum information processing gets a boost: Improving the efficiency of quantum heat engines involves reducing the number of photons in a cavity, ultimately impacting quantum manipulation power.»

To improve fuel efficiency, advanced combustion engines are being designed to minimize the amount of heat wasted in the exhaust.

This testing area is primarily configured to establish the overall performance of a heat - powered engine, including its efficiency, power output, and reliability.

Because of the compression limitation required to prevent «engine knock», a typical gasoline engine can only deliver about 25 % efficiency — only 25 % of the BTU's in a gallon of gasoline are converted to mechanical energy that turns the wheels of the car, the other 75 % is lost in waste heat.

The resulting reduced surface area of the direct injection diesel engine reduces heat losses, and thereby increases engine efficiency, at the expense of slightly increased combustion noise.

Despite improvements in engine efficiency — e.g., with technologies such as direct fuel injection, variable valve timing, exhaust - driven turbochargers, brake energy regeneration and Auto Start Stop function — about 60 % of the generated energy is still lost, half of it being exhaust heat, with the remaining... Read more →

Due to the limitations of the Second Law of Thermodynamics, and the Carnot efficiency corollary, it is very difficult and expensive to get a heat engine to convert at better than 50 %, and it is more common to see 33 % for electric power generation at central power plants.

That will give us a Carnot Efficiency of about 60 % which is well above parasitic losses practical heat engines.

It is not an engine that converts heat to work, with efficiency limited by temperatures of reservoirs (see The Energy Advocate, November, 1997), but rather one that converts the electrical potential energy of the atoms into an electric current directly.

Pay special attention to the zeroth, first and second laws, get to understand heat engines, refrigerators, limits on efficiency and coefficient of performance.

This includes measures to improve engine efficiency and the efficiency of the rest of the drive train and accessories, including air conditioning and heating.

For long high speed trips the engine would be at full power max efficiency with exhaust capable of heating solid oxide electrolyser cell producing h2 and O per electric and water.

The thermodynamic efficiency and power of the Hadley system, considered as a heat engine, is estimated at 200 terawatts.

The AVE's heat - to - work conversion efficiency corresponds to the efficiency of a Carnot engine, where the hot source temperature is the surface temperature and where the cold source temperature is the tropopause temperature.

Heat also exacerbates climate impacts by reducing the efficiency of thermal power generators, combustion engines and even the operation of solar photovoltaic (PV) panels.

As it turns out this lowers the latent heat capacity so much you can't get anywhere near the efficiency of choosing a higher boiling point which was an object lesson for me in why steam engines run at very high temperatures.

He maintains the efficiency of the boiler by cleaning the parts, oiling the engine, maintaining heat and pressure levels and replacing the worn out parts.