Which Refrigerant Is Used In Lithium Bromide VAR System?

Which refrigerant is used in lithium bromide VAR system? Lithium bromide –Water absorption refrigeration system

The lithium bromide absorption refrigeration system uses a solution of lithium bromide in water. Water is being used as refrigerant whereas Li-Br is a highly hydroscopic salt, used as absorbent.

Where is lithium bromide absorption refrigeration used?

The water-lithium bromide vapor absorption system is used in a number of air conditioning applications. This system is useful for applications where the temperature required is more than 32 degree F.

What refrigerant is used in absorption systems?

In the vapor absorption system the refrigerant used is ammonia, water or lithium bromide. The refrigerant gets condensed in the condenser and it gets evaporated in the evaporator. The refrigerant produces cooling effect in the evaporator and releases the heat to the atmosphere via the condenser.

Which of following is strong solution in lithium bromide absorption refrigeration system?

The lithium-bromide absorption refrigeration system uses a solution of lithium bromide in water. In this system, water is being used as a refrigerant whereas lithium bromide, which is a highly hydroscopic salt, is used as an absorbent.

Which cooling system uses ammonia or lithium bromide?

It is concluded that the VAR system using water-lithium bromide solution provided better performance than the system using ammonia-water solution.

Related guide for Which Refrigerant Is Used In Lithium Bromide VAR System?

Why is LiBr used in VAM?

The absorbent of the vapor absorption machine is Lithium bromide (LiBr). LiBr is a highly water attractive chemicals which means it has a great affinity towards water. The higher is the concentration and the lower its temperature, the stronger is the absorption power.

What is lithium bromide used in?

Uses. A 50–60% aqueous solution of lithium bromide is used in air-conditioning systems as desiccant. It is also used as a salt in absorption chilling along with water (see absorption refrigerator). Solid LiBr is a useful reagent in organic synthesis.

Which of the following refrigerant used in the steam jet refrigeration?

Steam jet or Ejector refrigeration system uses water as refrigerant. It uses the basic principle of boiling of liquid at lower temperature by reducing pressure on its surface.

What is refrigerant system?

Refrigeration systems operate by removing heat from cold objects and expelling it to a warm room, and they require the operation of a compressor that performs work during the process. From: Chemical Thermodynamics: Principles and Applications, 2000.

Which refrigerant has the maximum ozone depletion potential in the stratosphere?

CFC 11, or R-11 has the maximum potential amongst chlorocarbons because of the presence of three chlorine atoms in the molecule.

How is the refrigerant used in the air refrigeration cycle?

As refrigerant absorbs heat from indoor air, it transitions from a low-pressure gas to a high-pressure liquid. The refrigerant then cools down and turns back into a low-pressure gas. Another fan located inside the home blows air over the cool coils to distribute the resulting cold air throughout the building.

Which refrigeration system is used in domestic refrigerator?

The most common domestic refrigerator uses a vapour compression refrigeration system for maintaining required storage conditions, even though a small number of refrigerators use the principle of triple fluid vapour absorption refrigeration system. Domestic refrigerators are available in wide range of sizes and designs.

What is artificial refrigeration?

In other words, refrigeration is artificial (human-made) cooling. Energy in the form of heat is removed from a low-temperature reservoir and transferred to a high-temperature reservoir. Refrigeration has many applications, including household refrigerators, industrial freezers, cryogenics, and air conditioning.

How does a lithium bromide absorption chiller work?

In the absorber, the lithium bromide absorbs the water refrigerant, creating a solution of water and lithium bromide. The refrigerant—usually water—can change phase easily between liquid and vapour and circulates through the system. Heat from natural gas combustion or a waste-heat source drives the process.

Why is lithium used in air conditioning?

A system of air-conditioning is described that employs lithium chloride for independently controlling both the relative humidity and the dry-bulb temperature of air. Further cooling or warming of the air when desired is attained by using an after-cooling or after-heating coil.

Which is refrigerant in absorption chiller Mcq?

Lithium bromide-water vapour is another absorption refrigeration system. Explanation: In this, water is the refrigerant and solution of lithium bromide in water is the absorbent.

What is VAM in HVAC?

VAM units are a pair of air to air heat exchangers (energy recovers), which are installed to the ventilation system of central air conditioning units that need a percentage of fresh air.

What is VAM cooling system?

A vapor absorption chiller (VAM) is a machine to produce chilled water using heat source such as steam, hot water, gas, and oil. The refrigerant used is actually water, as that is the working medium that experiences a phase change and causes the cooling affect.

Which is the primary refrigerant in central air conditioning plant?

R22 is what is commonly known as Freon, and has been used as a central air conditioning system refrigerant for decades.

What type of reaction is lithium bromide?

Chemical Properties of Lithium Bromide – LiBr

This is a single displacement reaction.

What is lithium iodide used for?

Lithium iodide is used as a solid-state electrolyte for high-temperature batteries. It is also the standard electrolyte in artificial pacemakers due to the long cycle life it enables. The solid is used as a phosphor for neutron detection.

What is the anion in lithium bromide?

In lithium bromide an ionic bond is formed by the transfer of an electron from lithium to bromine. As lithium donates an electron so it forms a cation or gets a positive charge Li+. While bromine accepts an electron, so it forms an anion or gets a negative charge Br-. Crystal structure of lithium bromide is cubic.

Which of the following can be used as refrigerant in both Vapour compression and Vapour absorption?

Detailed Solution

Here water is the refrigerant and lithium bromide as the absorbent. Ammonia-Water (NH3 – H2O) system for refrigeration applications with ammonia as refrigerant and water as absorbent.

What is steam jet refrigeration system?

Steam jet cooling system is a cooling technique which involves usage of steam and water for cooling purposes. In steam jet refrigeration systems, water can be used as the refrigerant. Like air, it is perfectly safe. These systems were applied successfully to refrigeration.

Which one of the following is a CFC refrigerant?

Detailed Solution. CFC stands for Chlorofluorocarbon where Chlorine element is present. From above R502 refrigerent have Chlorine element.

What type of refrigerant is R 717?

R717 (Ammonia) is refrigerant grade Ammonia (NH3) used in low and medium temperature refrigeration. It is a colourless, pungent, highly toxic gas but is a very efficient refrigerant with zero Global Warming Potential (GWP).

Which is used as refrigerant?

Low-molecular weight hydrocarbons, hydrofluorocarbons (HFCs), ammonia and nitrogen are commonly used as the refrigerant; since 1987, chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are being phased out [7,8]. Single cycles, such as that shown in Figure 6.6, can cool process streams to around −40 °C.

Which of the following is an example of a refrigerant?

Which of the following is an example of a refrigerant? Explanation: CFCs are common examples of refrigerants. Freons like R-11, R-12, R-21, R-22 and R-502 are also used. Platinum, Argon and Nitrogen are not used as refrigerants.

Which refrigerant is best for AC?

The most common HFC used in air conditioners is R-410A. This refrigerant is better than R-22 in terms of “Ozone Depletion” potential and energy efficiency, but it still causes global warming.

Refrigerant Global Warming Potential Ozone Depletion Potential
R-22 1810 Medium
R-410A 2088 Zero
R-32 675 Zero
R-134A 1430 Zero

What is an evaporator used for?

An evaporator is a device used in a process to turn the liquid form of a chemical substance, such as water, into its gaseous form - vapor. The liquid is evaporated, or vaporized, into a gas form of the targeted substance in that process.

What does R22 stand for?

R22 is the short name for the halocarbon compound CHClF2 (monochlorodifluoromethane), which is used as the refrigerant. R stands for the refrigerant. In the number “22” second “2” denotes the number of the fluorine atoms in the compound. The boiling point of R22 is -40.8 degree Celsius (-41.4 degree F).

What is r11 refrigerant?

Summary. R-11 is a colorless and odorless CFC refrigerant that was completely banned from production by 1996 under the Montreal Protocol for depleting the ozone. It is a low-pressure refrigerant that was commonly used in centrifugal chillers and before the 1970's it was used as a propellant for aerosols.

Which of the following refrigerant has the maximum?

Solution(By Examveda Team)

Sulphur dioxide has the highest freezing point.

Was this post helpful?

Leave a Reply

Your email address will not be published.