Set 3
... If the work done on a system is reverseable, we call it configuration work. This is because in almost all cases, reverseable processes do something to change the macroscopic configuration of the system. This in general can be undone. Consider the compression of an ideal gas by a piston. Of the syste ...
... If the work done on a system is reverseable, we call it configuration work. This is because in almost all cases, reverseable processes do something to change the macroscopic configuration of the system. This in general can be undone. Consider the compression of an ideal gas by a piston. Of the syste ...
Heat
... 10-9-4 Free expansions These are adiabatic processes in which no transfer of heat occurs between the system and its environment and no work is done or by the system. Thus, Q = W = 0 and the first law requires that ...
... 10-9-4 Free expansions These are adiabatic processes in which no transfer of heat occurs between the system and its environment and no work is done or by the system. Thus, Q = W = 0 and the first law requires that ...
AN700 - AMCOM Communications, Inc.
... metal ridge heat sink as shown in figure 6A. We strongly recommend this way for high power MMIC such as AM142540MM-BM-R, which has 10W output power. The other option, which is more practical and less expensive, is to add sufficient number of plated through via holes to the PCB. The base of the devic ...
... metal ridge heat sink as shown in figure 6A. We strongly recommend this way for high power MMIC such as AM142540MM-BM-R, which has 10W output power. The other option, which is more practical and less expensive, is to add sufficient number of plated through via holes to the PCB. The base of the devic ...
Thermodynamics
... In thermodynamics, “system” still means that. However, we add the notion that the system will usually include some definite amount of a fluid – typically, an ideal gas. It might also include other elements, such as the fluid’s container. It’s always important to be clear about what’s in the system, ...
... In thermodynamics, “system” still means that. However, we add the notion that the system will usually include some definite amount of a fluid – typically, an ideal gas. It might also include other elements, such as the fluid’s container. It’s always important to be clear about what’s in the system, ...
The Second Law of Thermodynamics
... which spontaneously pumps heat from cold to hot without any work input from the surroundings. This violates Clausius’ principle and thus we have proved Thompson’s principle by contradiction. Similarly, we can use Thompson’s principle to prove Clausius’. Again, the proof is by contradiction. If Claus ...
... which spontaneously pumps heat from cold to hot without any work input from the surroundings. This violates Clausius’ principle and thus we have proved Thompson’s principle by contradiction. Similarly, we can use Thompson’s principle to prove Clausius’. Again, the proof is by contradiction. If Claus ...
General Chemistry: Chemistry 1000
... NOTE: Energy is sometimes measured in units of calories where 1 cal=4.184 joules. b. Work is the energy needed to move an object and so is found from the force that must be applied and the distance the object is moved. W = force times distance = f d SI units: ...
... NOTE: Energy is sometimes measured in units of calories where 1 cal=4.184 joules. b. Work is the energy needed to move an object and so is found from the force that must be applied and the distance the object is moved. W = force times distance = f d SI units: ...
Air and Conduction Cooling for 3U COTS Cards
... designed into products without testing, thermal failures may have resulted. Because these materials have been designed for use in commercial applications they also need to be tested for rugged properties such as long-term thermal cycling, exposure to humidity, etc., to ensure that they can be used i ...
... designed into products without testing, thermal failures may have resulted. Because these materials have been designed for use in commercial applications they also need to be tested for rugged properties such as long-term thermal cycling, exposure to humidity, etc., to ensure that they can be used i ...
- Uponorpro.com
... It is important to realize that the strategies used in forcedair systems are not necessarily applicable for radiant systems. The way in which energy is evaluated and managed is on a more finite level with radiant systems. The temperature in one room will not impact the temperature in the next room. ...
... It is important to realize that the strategies used in forcedair systems are not necessarily applicable for radiant systems. The way in which energy is evaluated and managed is on a more finite level with radiant systems. The temperature in one room will not impact the temperature in the next room. ...
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.