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Related Concept Videos

Constant Volume Calorimetry02:41

Constant Volume Calorimetry

27.0K
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
27.0K
Energy Balance01:19

Energy Balance

343
The human body gets energy from the three macronutrients: carbohydrates, proteins, and fats. Energy is released when the chemical bonds in the organic compounds present in the food are broken down. The energy content of food is measured in kilocalories (kcal), defined as the amount of heat required to raise the temperature of one kilogram of water by one degree Celsius. This value is determined by measuring the temperature change of the water surrounding a calorimeter after the complete...
343
Calorimetry01:19

Calorimetry

3.0K
When objects at different temperatures are placed in contact with each other but isolated from everything else, they attain thermal equilibrium. A container that prevents heat transfer in or out is called a calorimeter, and the use of a calorimeter to make measurements is called calorimetry. Generally, these measurements involve heat or specific heat capacity. The term "calorimetry problem" is used for any problem where the specified objects are thermally isolated from their...
3.0K
Quantifying Heat02:46

Quantifying Heat

54.3K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a...
54.3K
Constant Pressure Calorimetry03:02

Constant Pressure Calorimetry

85.0K
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
85.0K
Glassware Calibration01:11

Glassware Calibration

216
Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
216

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Updated: Jun 18, 2025

Using a Combination of Indirect Calorimetry, Infrared Thermography, and Blood Glucose Levels to Measure Brown Adipose Tissue Thermogenesis in Humans
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Sizing up caloric devices.

Suxin Qian1, Ichiro Takeuchi2,3

  • 1Department of Refrigeration and Cryogenic Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.

Science (New York, N.Y.)
|August 1, 2024
PubMed
Summary
This summary is machine-generated.

Emerging solid-state cooling technologies offer a promising path to reduce global carbon emissions. These innovative methods present a sustainable alternative for cooling applications.

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Area of Science:

  • Materials Science
  • Thermodynamics
  • Environmental Science

Background:

  • Current cooling systems, such as vapor-compression refrigeration, contribute significantly to greenhouse gas emissions.
  • The increasing demand for refrigeration and air conditioning exacerbates global warming concerns.
  • There is a critical need for sustainable and energy-efficient cooling solutions.

Purpose of the Study:

  • To explore the potential of emerging solid-state cooling technologies.
  • To evaluate their efficacy in reducing overall carbon emissions.
  • To highlight their role in sustainable climate change mitigation strategies.

Main Methods:

  • Review of recent advancements in solid-state cooling materials and devices.
  • Analysis of the thermodynamic principles underlying solid-state cooling mechanisms.
  • Comparative assessment of energy efficiency and environmental impact against conventional technologies.

Main Results:

  • Solid-state cooling demonstrates significant potential for energy savings.
  • These technologies offer a lower carbon footprint compared to traditional cooling methods.
  • Advancements in materials science are driving the performance of solid-state coolers.

Conclusions:

  • Solid-state cooling technologies represent a viable and sustainable alternative to conventional cooling.
  • Their widespread adoption can contribute substantially to reducing global carbon emissions.
  • Further research and development are crucial for optimizing performance and commercialization.