Adsorption and desorption system

Adsorption Adsorption is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent), forming a film of molecules or atoms (the adsorbate). The term sorption encompasses both processes, while desorption is the reverse process of adsorption. Desorption Desorption is a phenomenon whereby a substance is released from or through a surface. The process is the opposite of sorption (that is, adsorption and absorption). As the temperature rises, so does the likelihood of desorption occurring. The working pairs in adsorption refrigeration Principles of adsorption refrigeration Like the mechanical vapor compression refrigeration cycle and the absorption refrigeration cycle, the adsorption...

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Ammonia/Water - Absorption Refrigeration System

Process Description Some liquids like water have a great tendency for absorbing large amount of certain vapors (NH3) and reduce the total volume quite. The absorption chiller refrigeration system differs basically from vapor compression system only in the method of compressing the refrigerant. In the absorption refrigerating system, the compressor is replaced with an absorber, generator and pump. Figure 6.7 shows the schematic diagram of a vapor absorption refrigeration system. Ammonia vapor is extracted from the  NH3 strong solution at high pressure in the generator by an external heating source. In the rectifier, the water vapor which carried with ammonia is removed and only the dried ammonia gas enters into...

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Evaporator - Types Of Evaporators

The evaporator is kind of heat transfer apparatuses where the heat transfer is done by forced convection or natural convection. And it’s an important component of refrigeration system and air conditioning system. Evaporation process is rejection of water  (or other liquids) by concentrating the solution. The required time for this process can by shortened by increasing the surface area, the solution is exposed to it, or by exposing  the solution to heating to a higher  temperature. How does evaporator work ? For a basic refrigerant cycle shown in figure 1, which is used in many forms in all common air conditioning, refrigeration, heat pump applications. It uses a proper refrigerant that has the capability to change...

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What Is An Absorption Chiller ?

What is An Absorption Chiller ? An Absorption Chiller is a machine uses a heat source to generate chilled water rather than electrical source that is used in vapor compression cycle. It’s an attractive idea to produce chilled water with heat. As the same in vapor compression cycle, absorption cycle achieve removing heat using the evaporation of a refrigerant at low pressure and the ejection of heat using the condensation the refrigerant at high pressure. The major difference between  a vapor compression system and an absorption chiller is that a vapor compression system using a compressor to make the pressure difference required to circulate the refrigerant while the absorption chiller using heat. The absorption...

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