thermal efficiency

简明释义

热效率

英英释义

例句

1.Researchers are focusing on increasing the thermal efficiency of solar panels.

研究人员正在致力于提高太阳能电池板的热效率。

2.The thermal efficiency of this boiler is rated at 90%.

这台锅炉的热效率评级为90%。

3.Engineers are testing materials to enhance the thermal efficiency of heat exchangers.

工程师正在测试材料以提高热交换器的热效率。

4.The new engine design has significantly improved its thermal efficiency.

新发动机设计显著提高了其热效率。

5.A higher thermal efficiency means less fuel consumption in power plants.

更高的热效率意味着发电厂的燃料消耗更少。

作文

Thermal efficiency is a crucial concept in the field of thermodynamics and energy conversion. It refers to the ratio of useful work output from a system to the heat input into that system. In simpler terms, it measures how effectively a machine or engine converts heat energy into mechanical energy. The higher the thermal efficiency (热效率), the more efficient the system is at using the energy supplied to it. This concept is particularly significant in engines, power plants, and various industrial processes where energy consumption is a critical concern.To understand thermal efficiency (热效率) better, let’s consider a steam engine as an example. In a steam engine, water is heated to produce steam, which then expands and drives a piston to perform work. However, not all the heat energy from the burning fuel is converted into work; some of it is lost to the surroundings. The thermal efficiency (热效率) of the steam engine can be calculated by dividing the work done by the engine by the total heat energy supplied through the fuel. If an engine has a thermal efficiency (热效率) of 30%, it means that only 30% of the heat energy is converted into useful work, while the remaining 70% is wasted.Improving thermal efficiency (热效率) is a key focus for engineers and scientists, especially in the context of rising energy costs and environmental concerns. By enhancing the efficiency of engines and power plants, we can reduce fuel consumption and greenhouse gas emissions. Various methods are employed to improve thermal efficiency (热效率), such as increasing operating temperatures and pressures, utilizing regenerative systems, and optimizing the design of combustion chambers.Another important aspect of thermal efficiency (热效率) is its relationship with the Carnot efficiency, which is the theoretical maximum efficiency of a heat engine operating between two temperature reservoirs. The Carnot efficiency sets an upper limit on thermal efficiency (热效率); no real engine can exceed this value due to irreversibilities and losses in the system. Understanding this relationship helps engineers set realistic goals for improving efficiency in practical applications.In recent years, advancements in technology have led to the development of more efficient engines and power generation systems. For instance, combined cycle power plants utilize both gas and steam turbines to achieve higher thermal efficiency (热效率). By capturing waste heat from the gas turbine to generate steam for the steam turbine, these plants can achieve efficiencies exceeding 60%, significantly reducing the amount of fuel needed to produce electricity.In conclusion, thermal efficiency (热效率) is a fundamental parameter that plays a vital role in the design and operation of energy systems. As we face challenges related to energy sustainability and environmental impact, understanding and improving thermal efficiency (热效率) becomes increasingly important. By focusing on enhancing the efficiency of our energy conversion processes, we can create a more sustainable future for generations to come.