A motherboard heat sink is used to cool chips on system boards, such as the CPU and chipset, to prevent damage from heat generated during use. They are made from materials such as aluminum or copper alloys and come in passive or active designs. The heat sink must be tightly pressed against the chip surface […]
Heat treating titanium involves applying high temperatures to make it more workable for manufacturing. Annealing increases ductility, while stress relief reduces stress during welding or forming. Contamination is a critical issue, and titanium alloys are used for maximum hardening properties. NASA uses titanium alloys for their strong, non-melting properties, and they are even used in […]
Waste heat is generated by industrial processes and machinery, but can be recovered through cost-effective techniques such as waste heat recovery boilers and heat tube exchangers. This form of recycling reduces fossil fuel use and greenhouse gas emissions. Waste heat recovery systems are being developed for cars and ships to improve fuel efficiency and reduce […]
Heat shrink tubing is a plastic tubing that shrinks when heated and is commonly used in electrical applications to protect, insulate, or repair wires. It can work through expansion or polymerization and has a shrink ratio. Raychem Corporation developed the process of cross-linking for high strength and durability. Heat shrink tubing is a type of […]
Heat Recovery Ventilation (HRV) is an energy-efficient air exchange method that recovers heat from exhaust to reheat incoming air. It uses air-to-air or ground-to-air heat transfer and allows fresh air to be brought in for ventilation. HRV systems use ribbed plates to exchange heat and come in three designs: vertical flat plates, horizontal flat plates, […]
Refraction causes wavy lines above hot surfaces due to the bending of light waves passing through cold and warm air with different refractive indices. This phenomenon, responsible for desert mirages, occurs due to the unstable air temperature causing vibrations. It is important to drive carefully during “highway mirages”. Inferior and superior mirages occur when the […]
Aluminum heat pipes are effective at transferring heat with minimal energy loss, and are commonly used in heating and cooling equipment. They are typically hollow tubes filled with a conductive agent and regulated by an external wick structure. Heat sinks are often used in conjunction with aluminum heat pipes to dissipate heat and provide cooling. […]
A heat load calculator determines the necessary size of a furnace and air conditioning unit based on factors such as room size, insulation, doors, floors, and desired temperature. It is now available online for free and requires accurate data entry. The calculator measures heat load in BTUs and watts to determine the appropriate HVAC system. […]
Heat shields protect from excess heat in three ways: heat sink, absorbent, and reflective. They are made of aluminum, steel, or ceramic, with ceramic being the best. They are found in firearms, engines, and high-speed aircraft. A heat shield is a substance that protects something from excess heat. There are three basic forms of heat […]
Concentrated solar power (CSP) systems use heat transfer fluids to collect and transport heat from mirrors that focus sunlight onto receivers. The hot fluid is then pumped into a steam turbine power plant to generate electricity. CSP has the benefits of solar fuel but can achieve higher efficiencies and yields. Heat transfer fluids must have […]
Renewable heat is generated from sources such as wood, biodiesel, geothermal energy, and solar radiation. Wood stoves, biodiesel furnaces, geothermal systems, and solar panels are all used to produce renewable heat. Super insulation is often used with renewable heating systems. Renewable heat refers to any heating system powered by a renewable energy source. Wood, biodiesel, […]
Heat of passion is a legal defense used to argue that intense feelings caused a loss of control, reducing criminal charges or sentence. It disputes premeditation and argues impulsiveness, considering reasonableness. It can reduce murder charges to manslaughter and reduce sentences. The heat of passion refers to a legal defense argument. A person uses it […]
Heat edema is swelling of the extremities caused by exposure to high temperatures. It is not dangerous but can be a sign of heat-related illnesses. Treatment involves cooling down and elevating the affected area. Acclimating slowly to heat can prevent heat edema. Heatstroke requires immediate medical attention. Heat edema is swelling of the extremities associated […]
Sensible heat is thermal energy that causes temperature changes and is transferred by conduction or convection. It is used in weather forecasting, HVAC, and can be stored for later use. It differs from latent heat, which is exchanged during phase changes. Various methods can be used to measure or estimate sensible heat, from thermometers to […]
Heat capacity (C) is the input of heat energy (Q) required to raise the temperature (T) of a substance by 1°C. It varies for different substances and quantities. Molar heat capacity is per mole, specific heat capacity is per gram. Heat capacity is used in engineering and meteorology. It does not account for phase changes, […]
The heat of vaporization is the energy required to convert a liquid to vapor at the boiling point, and is influenced by intermolecular bonding forces and expansion work. A conceptual model assumes a flexible liquid surface and surface drag. The heat of vaporization is important in industrial distillation and steam heating systems, and can be […]
Heat flux is the flow of thermal energy from a high to low potential. It occurs through conduction and convection and is measured by temperature differences. Heat flows by diffusion in fluids and by vibrations in solids. Sensible heat flux is due to temperature differences, while latent heat flux is due to phase changes. Critical […]
Electric hobs are versatile cooking devices made of tempered steel with a flat oblong cooking surface and electric heating elements. They can be used on a table, patio, or while camping, and are easy to clean. They are available in various stores and are a smart choice for preparing nutritious meals. Electric hobs are handy […]
The heat of fusion is the energy needed to transform a solid into a liquid. The temperature remains constant during this process, and the energy is stored as potential energy. Different substances require different amounts of heat of fusion, depending on molecular bonds. The heat of fusion, also called the enthalpy of fusion, is the […]
Heat balance is when the amount of heat entering a system is equal to the amount leaving it, keeping the overall temperature stable. This is important in biology, geology, manufacturing, and spacecraft design. Animals and machines need to maintain thermal equilibrium, and a planet’s heat balance affects its temperature and inhabitants. Factories should consider heat […]
