Unleash Cooling Excellence with the Premium Vapour Absorption Machine service provider - Aadiushmaa

Next, the liquid refrigerant enters the evaporator, where it absorbs heat from the surroundings. This causes the evaporation of the refrigerant. This evaporation process extracts heat, resulting in a cooling effect. Finally, the refrigerant vapour is directed to the absorber, where it is absorbed by the absorbent, completing the cycle. By utilising heat instead of mechanical compression, VAM machines offer a more energy-efficient and environmentally friendly alternative for cooling applications.

Working Principle of a Vapour Absorption Chiller

The working principle of a vapour absorption chiller revolves around the cycle of absorbing and releasing the vaporous refrigerant. In a vapour absorption chiller, the refrigeration process begins with the evaporation of a refrigerant, typically ammonia or lithium bromide. The evaporated refrigerant is then absorbed by an absorbent, creating a refrigerant-absorbent mixture. The mixture is then pumped into a generator, where it is heated using an external heat source. This heat causes the refrigerant to vaporise and separate from the absorbent, forming a high-pressure, high-temperature vapour. The vapour is then directed to a condenser, where it is cooled and condensed back into a liquid state, releasing the absorbed heat.

The high-pressure liquid refrigerant then passes through an expansion valve, where its pressure and temperature decrease. This low-pressure, low-temperature refrigerant is then circulated through an evaporator, where it absorbs heat from the surroundings, creating a cooling effect.

The absorbent, which now contains a lower concentration of refrigerant, returns to the absorber, where it is ready to absorb more evaporated refrigerant, continuing the cycle. This process is driven by the heat input, making vapour absorption chillers suitable for applications where waste heat or renewable energy sources can be utilised efficiently.