A Vapour Absorption Machine (VAM) is a type of refrigeration system that operates on the principle of heat absorption. It uses a refrigerant-absorbent pair to produce cooling by absorbing heat from a space and releasing it elsewhere. VAMs are commonly used in industrial applications and areas where waste heat or low-grade heat is available.
The refrigerant used in a lithium bromide refrigeration system is water. This system utilizes the absorption refrigeration cycle, where water is the refrigerant and lithium bromide serves as the absorbent to remove heat from the desired space.
usually refrigerant is ammonia and water.Meanwhile absorber is water, lithium bromide and calcium chloride. usually that be in paired is ammonia-water or lithium barium-water
usually hydrogen or helium gas were choose as inlet gas/ carrier from evaporator to absorber coil. Inlet gas contribution toward total pressure in the system where according to formula to determine partial pressure in the system PTOTAL SYSTEM = P HYDROGEN (inlet gas ) + P AMMONIA (REFRIGERANT )
Condenser pressure in an absorption chiller refers to the pressure within the condenser unit where the refrigerant vapor is condensed into a liquid. It is influenced by the temperature of the cooling medium (usually water or air) used to remove heat from the refrigerant. Maintaining appropriate condenser pressure is crucial for the efficient operation of the chiller, as it affects the overall performance and capacity of the cooling system. High condenser pressure can reduce efficiency and increase energy consumption, while low pressure can lead to inadequate refrigerant flow.
A pressure sensor or transducer is used to measure the pressure of the refrigerant in a sealed system, which in turn is correlated with the temperature of the system. As temperature increases, the pressure of the refrigerant also increases, allowing the system to sense temperature changes and adjust accordingly.
A heat pump and a refrigerant system both use refrigerant to transfer heat. The refrigerant absorbs heat from one area (such as indoors in a heat pump) and releases it in another area (such as outdoors in a heat pump). The main difference is that a heat pump can both heat and cool a space, while a refrigerant system is typically used for cooling only.
R-134
Your condensor outside , where the compressor is . should have an information plate showing the type of refrigerant used
R134a
The refrigerant cylinder pressure is typically higher than the system pressure, which allows the refrigerant to flow from the cylinder into the system. By opening the valve on the refrigerant cylinder, the higher pressure inside the cylinder forces the vapor refrigerant into the lower pressure system. This creates a flow of refrigerant into the system until the pressures equalize or until the desired amount of refrigerant has been added.
Disposable refrigerant containers are only used for virgin refrigerant.