calorimeter

简明释义

英[ˌkæləˈrɪmɪtə(r)]美[ˌkæləˈrɪmɪtər]

n. [热] 热量计

英英释义

单词用法

同义词

反义词

例句

1.The scientist used a calorimeter to measure the heat released during the chemical reaction.

科学家使用热量计来测量化学反应中释放的热量。

2.In our physics lab, we learned how to operate a calorimeter for our experiments.

在我们的物理实验室，我们学习了如何操作热量计进行实验。

3.The calorimeter showed an increase in temperature, indicating an exothermic reaction.

热量计显示温度上升，表明是放热反应。

4.To determine the caloric content of food, nutritionists often use a bomb calorimeter.

为了确定食物的热量，营养学家常常使用炸弹热量计。

5.The calorimeter was calibrated before the experiment to ensure accurate results.

实验前对热量计进行了校准，以确保结果准确。

作文

The study of thermodynamics is crucial in understanding the principles of energy transfer, and one key instrument used in this field is the calorimeter（量热计）. A calorimeter is an essential device for measuring the amount of heat released or absorbed during a chemical reaction or a physical process. By utilizing a calorimeter, scientists can gain insights into various reactions, allowing them to quantify energy changes that occur in different environments. In practical applications, there are several types of calorimeters used depending on the specific requirements of the experiment. For example, a coffee cup calorimeter is often employed in educational settings due to its simplicity and ease of use. This type of calorimeter consists of two styrofoam cups, one placed inside the other, with a thermometer inserted to measure temperature changes. When a reaction occurs inside this setup, the heat exchange can be easily monitored, providing valuable data for students and researchers alike. On the other hand, bomb calorimeters are more sophisticated instruments used to measure the heat of combustion of a substance. In this setup, a sample is placed in a sealed container, and oxygen is added to facilitate combustion. The calorimeter is then submerged in water, and as the sample burns, the heat generated raises the temperature of the surrounding water. By measuring this temperature change, scientists can calculate the energy content of the fuel, which is vital for evaluating its efficiency and environmental impact. Understanding how to properly use a calorimeter is essential for accurate results. Calibration is necessary to ensure that the measurements obtained are reliable. Additionally, it is important to account for heat losses to the surroundings, which can affect the overall accuracy of the experiment. This is why researchers must be meticulous in their approach when using a calorimeter. Beyond the laboratory, calorimeters have significant implications in various industries. For instance, in food science, calorimeters are used to determine the caloric content of food items, helping consumers make informed dietary choices. Similarly, in environmental science, calorimeters assist in assessing the energy output of different fuels, contributing to the development of sustainable energy solutions. In conclusion, the calorimeter（量热计）plays a vital role in both academic research and practical applications across various fields. Its ability to measure heat transfer allows scientists and engineers to understand energy dynamics better, leading to advancements in technology, nutrition, and environmental sustainability. As we continue to explore the intricacies of energy and its transformations, the importance of the calorimeter will undoubtedly remain paramount in our quest for knowledge and innovation.