Latent heat storage in buildings
... with exposed solid concrete walls or masonry. This cooling effect is made possible by the high heat capacity of the building fabric itself. Solid, exposed building components function as heat buffers – they can absorb heat during the day and then release it again at night. In contrast, the room temp ...
... with exposed solid concrete walls or masonry. This cooling effect is made possible by the high heat capacity of the building fabric itself. Solid, exposed building components function as heat buffers – they can absorb heat during the day and then release it again at night. In contrast, the room temp ...
Advances in High-Power Laser Diode Packaging
... source (in this case, laser diode) to the heat sink by means of conduction alone is insufficient. To maintain its high efficiency and long lifetime, the operating temperature of the laser diode package is kept as low as possible, typically below 60 °C. Depending on the thermal power density, these h ...
... source (in this case, laser diode) to the heat sink by means of conduction alone is insufficient. To maintain its high efficiency and long lifetime, the operating temperature of the laser diode package is kept as low as possible, typically below 60 °C. Depending on the thermal power density, these h ...
- WRAP: Warwick Research Archive Portal
... Another method to solve transient temperature problems is to set up a thermal network based on the thermal resistance of different package materials [7], [8]. In this way, the junction temperature can be estimated instantly with the help of circuit simulators, such as PSpice. The methodology used in ...
... Another method to solve transient temperature problems is to set up a thermal network based on the thermal resistance of different package materials [7], [8]. In this way, the junction temperature can be estimated instantly with the help of circuit simulators, such as PSpice. The methodology used in ...
on fouling in heat exchangers - abuad lms
... Heat exchangers are devices used to transfer heat between two or more fluid streams at different temperatures. Heat exchangers find widespread use in power generation, chemical processing, electronics cooling, air-conditioning, refrigeration, and automotive applications. Fouling is generally defined as ...
... Heat exchangers are devices used to transfer heat between two or more fluid streams at different temperatures. Heat exchangers find widespread use in power generation, chemical processing, electronics cooling, air-conditioning, refrigeration, and automotive applications. Fouling is generally defined as ...
HEAT AND MASS TRANSFER Module 1: Introduction (2)
... Assumptions: (1) steady-state conditions, (2) constant properties, (3) uniform dissipation, (4) negligible heat loss from back and sides, (5) one-dimensional conduction in chip. Analysis: All of the electrical power dissipated at the back surface of the chip is transferred by conduction through the ...
... Assumptions: (1) steady-state conditions, (2) constant properties, (3) uniform dissipation, (4) negligible heat loss from back and sides, (5) one-dimensional conduction in chip. Analysis: All of the electrical power dissipated at the back surface of the chip is transferred by conduction through the ...
Design Guide Solutions to Prevent Thermal
... Improving the thermal performance of a building enclosure and minimizing the energy use of buildings has received increasing focus in the drive for sustainability and energy security. We have seen the adoption of increasingly stringent enclosure thermal performance requirements in building codes, AS ...
... Improving the thermal performance of a building enclosure and minimizing the energy use of buildings has received increasing focus in the drive for sustainability and energy security. We have seen the adoption of increasingly stringent enclosure thermal performance requirements in building codes, AS ...
Thermochemistry Thermochemistry
... process. They only exist when something happens. • The system has energy, (often described as the capacity to do work), it does not have heat or work. CHEM 1000A 3.0 ...
... process. They only exist when something happens. • The system has energy, (often described as the capacity to do work), it does not have heat or work. CHEM 1000A 3.0 ...
Heat sink
A heat sink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device into a coolant fluid in motion. Then-transferred heat leaves the device with the fluid in motion, therefore allowing the regulation of the device temperature at physically feasible levels. In computers, heat sinks are used to cool central processing units or graphics processors. Heat sinks are used with high-power semiconductor devices such as power transistors and optoelectronics such as lasers and light emitting diodes (LEDs), where the heat dissipation ability of the basic device is insufficient to moderate its temperature.A heat sink is designed to maximize its surface area in contact with the cooling medium surrounding it, such as the air. Air velocity, choice of material, protrusion design and surface treatment are factors that affect the performance of a heat sink. Heat sink attachment methods and thermal interface materials also affect the die temperature of the integrated circuit. Thermal adhesive or thermal grease improve the heat sink's performance by filling air gaps between the heat sink and the heat spreader on the device.