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Common absorption refrigerators use a refrigerant with a very low boiling point (less than −18 °C (0 °F)) just like compressor refrigerators.Compression refrigerators typically use an HCFC or HFC, while absorption refrigerators typically use ammonia or water and need at least a second fluid able to absorb the coolant, the absorbent, respectively water (for ammonia) or brine (for water).
To most enthusiasts, Arctic is best known for their Freezer line of CPU coolers as well as their thermal compound called MX-2 and MX-4. [2] The Freezer line of coolers is available in different fan speed, cooling capacity and motherboard compatibility [3] to cater the needs of different type of users from HTPC users to enthusiasts and overclockers.
A pot-in-pot refrigerator, clay pot cooler [1] or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner pot (which can be glazed to prevent penetration by the liquid) within which the food is placed. The evaporation of the ...
Liquid cooling refers to cooling by means of the convection or circulation of a liquid. Examples of liquid cooling technologies include: Cooling by convection or circulation of coolant, including water cooling; Liquid cooling and ventilation garments, worn by astronauts; Liquid metal cooled reactors; Radiators (engine cooling) Cooling towers
At room temperature it is supplied as gas at 1 bar, so that the system is in the steady state. The Joule-Thomson (JT) cooler was invented by Carl von Linde and William Hampson so it is also called the Linde-Hampson cooler. It is a simple type of cooler which is widely applied as cryocooler or as the (final stage) of coolants.
The difference is that in adsorption refrigeration, the refrigerant or adsorbate vapour molecules adsorb onto the surface of a solid instead of dissolving into a liquid. In an adsorption system, an adsorber adsorbs the refrigerant vapour into a solid, while in an absorption system, an absorber absorbs the refrigerant vapour into a liquid. [1]
The pressure varies gradually and the velocities of the gas are low. So the name "pulse" tube cooler is misleading, since there are no pulses in the system. The piston moves periodically from left to right and back. As a result, the gas also moves from left to right and back while the pressure within the system increases and decreases.
These systems are replaced with liquid circulation pumps and heat exchanger and/or dry cooler systems. Power use at data centers is often measured in terms of power usage effectiveness (PUE). The definitions of PUE for air-cooled devices and liquid immersion cooled devices are different which makes such direct comparisons inaccurate.