gross calorific value

简明释义

总发热值

英英释义

例句

1.In our lab, we measure the gross calorific value of different biomass samples.

在我们的实验室中，我们测量不同生物质样品的粗热值。

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

天然气的粗热值通常高于煤的热值。

3.The gross calorific value of wood varies depending on the type of wood used.

木材的粗热值因所用木材的种类而异。

4.The gross calorific value is crucial for calculating the energy output of a power plant.

对于计算发电厂的能量输出，粗热值是至关重要的。

5.When comparing fuels, it's important to consider the gross calorific value to determine efficiency.

在比较燃料时，考虑粗热值以确定效率是很重要的。

作文

The concept of energy is fundamental to our understanding of how the world operates, and one important aspect of this is the measurement of energy content in fuels. One key term that often arises in discussions about fuel efficiency and energy production is gross calorific value. This term refers to the total amount of heat energy released when a unit of fuel is completely burned, including the heat contained in the water vapor produced during combustion. In simpler terms, it indicates how much energy can be extracted from a fuel source under ideal conditions.

Understanding the gross calorific value of various fuels is essential for several reasons. Firstly, it enables engineers and scientists to evaluate the efficiency of different energy sources. For example, when comparing coal, natural gas, and biomass, knowing their gross calorific values allows for a more informed decision about which fuel will produce the most energy per unit consumed. This is particularly important in industries where energy costs are a significant factor in overall expenses.

Additionally, the gross calorific value plays a vital role in environmental considerations. Fuels with higher gross calorific values tend to produce more energy and, consequently, may lead to lower emissions per unit of energy produced. However, it is essential to balance this with other factors such as the carbon footprint of extracting and burning the fuel. For instance, while coal may have a high gross calorific value, its environmental impact due to greenhouse gas emissions makes it a less favorable option compared to cleaner alternatives like natural gas or renewables.

Moreover, the gross calorific value is crucial in the context of energy policy and sustainability. Governments and organizations strive to transition to more sustainable energy sources to combat climate change. By understanding the gross calorific values of various fuels, policymakers can create regulations and incentives that promote the use of cleaner energy. This knowledge also aids in developing technologies that enhance energy efficiency, thereby maximizing the energy output from available resources.

In practical applications, the gross calorific value is measured in units such as megajoules per kilogram (MJ/kg) or British thermal units per pound (BTU/lb). These measurements allow for standardized comparisons among different fuels. For instance, if a particular type of wood has a gross calorific value of 15 MJ/kg, and a specific type of coal has a gross calorific value of 25 MJ/kg, it becomes clear that coal provides more energy per kilogram than wood.

In conclusion, the term gross calorific value is integral to the fields of energy production, environmental science, and policy-making. By understanding what gross calorific value means and how it applies to various fuels, we can make better choices regarding energy consumption and sustainability. As we continue to seek cleaner and more efficient energy sources, the importance of measuring and comparing gross calorific values will only grow, guiding us toward a more sustainable future.

能量的概念是我们理解世界运作的基础，其中一个重要方面是燃料中能量含量的测量。在讨论燃料效率和能源生产时，一个常用的术语是总热值。这个术语指的是当单位燃料完全燃烧时释放的总热能，包括燃烧过程中产生的水蒸气所含的热量。简单来说，它表明在理想条件下可以从燃料源中提取多少能量。

了解各种燃料的总热值至关重要，原因有很多。首先，它使工程师和科学家能够评估不同能源的效率。例如，在比较煤、天然气和生物质时，了解它们的总热值可以让人们更明智地决定哪种燃料在消耗的单位中会产生最多的能量。这在能源成本占总体开支的重要行业中尤为重要。

此外，总热值在环境考虑中也发挥着重要作用。具有较高总热值的燃料往往能产生更多的能量，因此可能导致每单位能源生产的排放更低。然而，必须将这一点与提取和燃烧燃料的其他因素（如碳足迹）进行平衡。例如，虽然煤可能具有较高的总热值，但由于温室气体排放造成的环境影响使其相较于天然气或可再生能源等更清洁的替代品变得不那么理想。

此外，总热值在能源政策和可持续性背景中至关重要。各国政府和组织努力过渡到更可持续的能源来源，以应对气候变化。通过了解各种燃料的总热值，政策制定者可以制定促进使用更清洁能源的法规和激励措施。这一知识也有助于开发提高能源效率的技术，从而最大化可用资源的能量输出。

在实际应用中，总热值以兆焦耳每千克（MJ/kg）或每磅英热单位（BTU/lb）等单位进行测量。这些测量允许对不同燃料进行标准化比较。例如，如果一种特定类型的木材的总热值为15 MJ/kg，而某种特定类型的煤的总热值为25 MJ/kg，那么很明显，煤每千克提供的能量比木材多。

总之，术语总热值在能源生产、环境科学和政策制定领域中不可或缺。通过理解总热值的含义及其如何应用于各种燃料，我们可以在能源消费和可持续性方面做出更好的选择。随着我们继续寻求更清洁和更高效的能源来源，测量和比较总热值的重要性只会增加，引导我们走向更可持续的未来。