#Thermal temperature

[citrine-elephant]

headcanon/fanon: temperature preferences

[allmightsaidgayrights]

puts him in the outfit i wore to work yesterday

[materialsscienceandengineering]

Heat Capacity and Specific Heats

Heat capacity in thermodynamics is defined as the amount of heat that is needed to change the temperature of an object by a defined temperature interval. Mathematically, it is most often represented by the capital letter C and the formula for it is C equals q (heat) over the defined change in temperature (ΔT). The units for heat capacity are energy per temperature (in SI base units, J/K). Heat capacity is an extensive property and depends directly on how much of a substance there is.

The intensive version of heat capacity, which is an intrinsic property of a material and does not depend on the amount of it, is known as specific heat capacity. As with other specific values, specific heat capacity is heat capacity divided by mass. It is often represented by the lowercase letter c.

Common subscripts for both heat capacity and specific heat capacity are P and V, to indicate either heat capacity at a constant pressure (P) or constant volume (V).

Sources/Further Reading: (Image source - Gonzaga University) (NASA) (Khan Academy) (LibreTexts) (Wikipedia)

[caramelcoconutswirl]

I bitch how cold i am but at the end of the day i! chose dressing stylish over warm

[laz-kay]

The cold weather got my asthma kicking my butt this week. Breathing’s hard man😮‍💨

[fingertipsmp3]

Why the Christ is it 19 degrees. Oh right, it’s because I ordered thermals

[transgenderfivepebbles]

WHO THE HELL DECIDED HEAT WOULD FEEL EXACTLY THE SAME AS COLD FOR THE FIRST 0.5 SECONDS

[wikipediagrams]

[jakeperalta]

why is it so COLD I am walking my dog looking fully ridiculous with the amount of layers I have on and I am still FREEZING

[catastrophic-crow]

try heating it for twice as long, at half power. also maybe ask your doctor about antidepressants

[materialsscienceandengineering]

A novel thermal insulation material for ultra-high temperature applications: Hierarchical porous high-entropy ceramics

Thermal insulation material is a critical part of the thermal protection system (TPS) of hypersonic vehicles. Recently, high-entropy ceramics have attracted great attention in thermal insulation for their low thermal conductivity due to the scattering of phonons by multi-components and distorted lattices. Among the various options available, porous high-entropy carbide (PHEC) ceramics have emerged as promising candidates for TPS due to their inherent characteristics such as high melting point, excellent high-temperature stability, low density, and superior thermal insulation properties. Generally, porous high-entropy carbide ceramics have been fabricated using various methods such as template, direct foaming, and partial sintering. To synthesize these ceramics, metal carbides or oxides are commonly used as starting materials by solid-state methods. This requires extensive milling to disperse the various components and extremely high processing temperatures to accelerate the diffusion of atoms.

Read more.

[semcoinfratechworld]

Battery Thermal Management: The Crucial Role of Temperature Control

In modern electric vehicles (EVs), the lithium-ion battery module pack takes center stage, influencing an EV's performance, range, and safety. However, these crucial power sources are sensitive to temperature extremes. Like people, batteries have their comfort zone, typically operating optimally between 15°C and 40°C. Yet, the reality of automotive environments exposes batteries to temperatures ranging from a frigid -20°C to a sweltering 55°C. What's the solution? Give the battery an air conditioner, and you get battery thermal management, which accomplishes three essential functions: heat dissipation, heating, and temperature consistency.

Heat Dissipation

When temperatures soar, batteries can experience a dramatic loss of life (resulting in capacity degradation) and an elevated risk of thermal runaway. Thus, effective heat dissipation is vital when the battery becomes excessively hot.

Heating

Conversely, when temperatures plummet, the battery's capacity may be reduced and performance weakened. Charging the battery in this frigid state can even pose a risk of thermal runaway due to potential internal short circuits. So, it's crucial to warm up or insulate the battery when it gets too cold.

Temperature Consistency

Think back to the old air conditioner in your childhood home. It would blast cold air upon startup and then take a break. Most modern air conditioners now use frequency conversion and even airflow distribution to maintain temperature consistency. Similarly, power batteries strive to minimize spatial temperature differences, ensuring minimal variance in cell temperature. Temperature consistency is paramount to battery performance and safety.

Effects of Low Temperatures on EVs and Batteries

As the heart of an EV, the power battery has a profound impact on its performance, affecting aspects such as range, acceleration, and service life. Safety is also a top priority. Battery performance is deeply intertwined with temperature, and cold climates can significantly hinder an EV's operation.

For instance, electric vehicle owners in colder regions often notice a significant drop in mileage during winter. In some cases, the range can plummet to as low as 70% of its usual capacity. Many drivers resist using cabin heaters to conserve mileage.

Low temperatures not only reduce an EV's battery capacity but also inhibit its discharge capabilities. At extremely low temperatures, the electrolyte inside the battery may freeze, leading to a severe reduction in power output.

Lithium-ion batteries are particularly susceptible to temperature extremes. At lower temperatures, the chemical reactions within the battery slow down, resulting in decreased performance and range. Charging in freezing conditions can also lead to the formation of lithium deposits on the battery's negative electrode, potentially puncturing the battery diaphragm and causing a short circuit. The safety implications of charging batteries at low temperatures are significant.

Battery Thermal Management: A Technological Solution

Battery thermal management is the solution to many of these challenges. This technology aims to maintain battery temperature within the ideal range. The approach includes both heating and cooling, to optimize battery performance.

There are several methods used in battery heating:

Battery Natural Heating: The heat generated during battery operation, discharging, or charging can increase the battery's temperature. However, this method can be slow and is rarely used in modern electric vehicles.

Blower Heating: Blowing hot or cold air into the battery pack through an external air conditioner is another method. This approach demands a carefully designed air duct and can result in uneven temperature distribution within the battery pack.

Heating Elements in the Battery Pack: These are composed of heating elements and circuits. Two common heating elements are the Positive Temperature Coefficient (PTC) and Heating Film. PTC offers advantages like safety, high thermal conversion efficiency, and rapid heating.

Circulating Liquid Heating: Liquid-cooled battery packs have become the mainstream option. This method offers uniform heat distribution, safety, and reliability. It usually features a system to facilitate heat dissipation, ensuring even temperature rises throughout the battery pack.

Conclusion

Battery thermal management is not just a luxury; it's a necessity for modern electric vehicles. In a world of varying climates, maintaining optimal battery temperature is a key factor in enhancing performance, ensuring safety, and prolonging battery life. As technology continues to evolve, battery thermal management will continue to play a crucial role in advancing the electric vehicle industry, offering the promise of efficient and reliable clean energy transportation for the future.

[futureelectronic1527]

Power Integrations: SCALE-iFlex Module Gate Drivers with Temperature Readout

https://www.futureelectronics.com/m/power-integrations . Power Integrations' SCALE-iFlex LT NTC family of IGBT/SiC module gate drivers provide Negative Temperature Coefficient (NTC) data, which enables accurate thermal management of converter systems and ensures proper current sharing. They dramatically enhance the overall system reliability of renewable energy and rail systems with multiple modules arrayed in parallel. https://youtu.be/HDg0zpG5wus

[deadtiredghost]

little miss awful body temperature regulation stripped off his thermal underlayer again. And now he is cold.

little miss awful body temperature regulation is taking his hoodie off again

[agilemicrosys]

Coal Stockpile Temperature Monitoring System - Reliable Thermal Monitoring Solutions

Ensure safety and prevent spontaneous combustion with our advanced coal stockpile temperature monitoring system. Designed to provide continuous thermal monitoring, our solution enables early detection of temperature changes within coal stockpiles, helping industries manage risks effectively.

[rnsqatar1]

The Importance of Thermal Insulation: Enhancing Energy Efficiency in Qatar

As Qatar continues to grow and develop, the need for energy-efficient building solutions has never been more critical. One of the most effective ways to achieve this is through thermal insulation. At RNS Qatar, we specialize in providing high-quality thermal insulation services that not only enhance comfort but also contribute to significant energy savings.

What is Thermal Insulation?

Thermal insulation refers to the materials and techniques used to reduce the transfer of heat between different areas of a building. This can involve preventing heat from escaping in cooler months and keeping indoor spaces cool during the hot summer. Effective thermal insulation is essential for maintaining a comfortable indoor environment while minimizing energy consumption.

Benefits of Thermal Insulation

Energy Efficiency: One of the primary advantages of thermal insulation is its ability to improve energy efficiency. By minimizing heat loss and gain, insulated buildings require less energy for heating and cooling, which can lead to substantial cost savings on utility bills.

Comfort: Proper insulation helps maintain a consistent indoor temperature, ensuring a comfortable environment for occupants. This is particularly important in Qatar, where extreme temperatures can impact comfort levels.

Environmental Impact: Using less energy translates to a lower carbon footprint. By investing in thermal insulation, you contribute to a more sustainable future and help combat climate change.

Noise Reduction: Thermal insulation materials can also reduce sound transmission, creating a quieter and more peaceful indoor atmosphere.

Increased Property Value: Well-insulated buildings are often more attractive to buyers and tenants, potentially increasing property value and rental income.

Our Thermal Insulation Services

At RNS Qatar, we offer a comprehensive range of thermal insulation services tailored to meet the specific needs of residential, commercial, and industrial clients. Our expert team uses high-quality materials and the latest techniques to ensure optimal performance. We understand the unique challenges posed by the Qatari climate and are committed to delivering solutions that enhance energy efficiency while complying with local regulations.

Why Choose RNS Qatar?

Expertise: Our team consists of skilled professionals with extensive experience in thermal insulation. We understand the intricacies of the local market and the specific needs of our clients.

Quality Materials: We source only the best insulation materials to ensure durability and effectiveness.

Customer Satisfaction: At RNS Qatar, we prioritize customer satisfaction and work closely with clients to deliver tailored solutions that meet their needs.

Conclusion

Investing in thermal insulation is a smart choice for anyone looking to improve energy efficiency, comfort, and sustainability in Qatar. With our expert services at RNS Qatar, you can ensure that your building is equipped with the best insulation solutions available. Contact us today to learn more about how we can help you enhance your property’s energy efficiency and comfort!