gross calorific value

简明释义

总热值

英英释义

例句

1.The gross calorific value 总热值 of a fuel can affect its efficiency in energy production.

燃料的总热值会影响其在能源生产中的效率。

2.The gross calorific value 总热值 of natural gas is typically higher than that of coal.

天然气的总热值通常高于煤炭。

3.Engineers often consider the gross calorific value 总热值 when designing combustion systems.

工程师在设计燃烧系统时常常考虑总热值。

4.The gross calorific value 总热值 is measured using a bomb calorimeter.

使用炸弹量热计来测量总热值。

5.To compare fuels, we look at their gross calorific value 总热值 per kilogram.

为了比较燃料，我们查看它们每千克的总热值。

作文

Understanding energy sources is crucial in our modern world, where the demand for sustainable and efficient energy is ever-increasing. One important concept in this field is the gross calorific value, which refers to the total amount of heat energy that can be obtained from a fuel when it is completely burned. This measure is essential for comparing the energy content of different fuels and determining their efficiency in energy production. In essence, the gross calorific value (GCV) provides a benchmark for assessing how much energy can be harnessed from various materials, making it a vital component in fields such as engineering, environmental science, and energy policy.The gross calorific value is typically expressed in units of energy per unit mass or volume, such as megajoules per kilogram (MJ/kg) or kilocalories per cubic meter (kcal/m³). This standardized measurement allows scientists and engineers to evaluate the performance of different fuels, including coal, natural gas, oil, and biomass. For instance, coal has a high gross calorific value, which makes it a popular choice for electricity generation, while natural gas is often favored for its cleaner combustion properties.When considering the gross calorific value, it is also important to understand the distinction between GCV and net calorific value (NCV). The GCV includes the total heat produced during combustion, including the heat of vaporization of water. In contrast, the NCV accounts for the energy lost due to water vapor being formed during combustion, thus providing a more realistic estimate of the usable energy available for practical applications. This differentiation is particularly relevant in industries where efficiency is paramount, such as power generation and heating.Furthermore, the gross calorific value plays a significant role in environmental assessments. By understanding the energy content of fuels, policymakers can make informed decisions about energy sources and their environmental impacts. For example, renewable energy sources like solar and wind may have lower GCVs compared to fossil fuels, but they offer significant benefits in terms of sustainability and reduced greenhouse gas emissions. As the world shifts towards cleaner energy solutions, understanding the gross calorific value of various fuels becomes increasingly important in the quest for a sustainable future.In conclusion, the gross calorific value is a fundamental concept in the study of energy resources. It serves as a critical tool for evaluating the efficiency and environmental impact of different fuels. As we continue to face challenges related to energy consumption and climate change, a thorough understanding of the gross calorific value will empower us to make better choices regarding energy production and consumption. By prioritizing fuels with higher GCVs and lower environmental impacts, we can work towards a more sustainable and energy-efficient future.

理解能源来源在我们现代世界中至关重要，在这个世界中，对可持续和高效能源的需求日益增加。一个重要的概念是总热值，它指的是从燃料完全燃烧中获得的总热能。这一测量对于比较不同燃料的能量含量和确定其在能源生产中的效率至关重要。从本质上讲，总热值（GCV）提供了一个评估各种材料可获取多少能量的基准，使其成为工程、环境科学和能源政策等领域的重要组成部分。总热值通常以每单位质量或体积的能量单位表示，例如兆焦耳每千克（MJ/kg）或千卡每立方米（kcal/m³）。这一标准化的测量方法使科学家和工程师能够评估不同燃料的性能，包括煤、天然气、石油和生物质。例如，煤的总热值较高，这使其成为发电的热门选择，而天然气因其更清洁的燃烧特性而受到青睐。在考虑总热值时，还需要理解GCV与净热值（NCV）之间的区别。GCV包括燃烧过程中产生的总热量，包括水的汽化热。相比之下，NCV则考虑了由于燃烧过程中形成的水蒸气而导致的能量损失，从而提供了对实际应用中可用能量的更现实的估计。这种区分在效率至关重要的行业（如发电和供热）中尤为相关。此外，总热值在环境评估中也发挥着重要作用。通过了解燃料的能量含量，政策制定者可以就能源来源及其环境影响做出明智的决策。例如，尽管可再生能源如太阳能和风能的GCV可能低于化石燃料，但它们在可持续性和减少温室气体排放方面提供了显著的好处。随着世界向更清洁的能源解决方案转变，理解各种燃料的总热值在追求可持续未来的过程中变得越来越重要。总之，总热值是能源资源研究中的一个基本概念。它作为评估不同燃料效率和环境影响的关键工具。随着我们继续面临与能源消费和气候变化相关的挑战，深入理解总热值将使我们能够在能源生产和消费方面做出更好的选择。通过优先考虑具有更高GCV和更低环境影响的燃料，我们可以朝着更可持续和能源高效的未来迈进。