What is evaporator and its types?

Evaporators are used to convert liquids into gaseous state via heat transfer. All of the basic evaporators have mechanism to separate liquid and vapor by means of a heat transfer. The raw material fed into the evaporator and passes through heated tubes. The heat evaporates the water within the raw material.

What are the two general classifications for evaporators?

The two general types of evaporators used in today’s refrigeration systems are flooded evaporators and dry, or direct expansion (DX), evaporators.

How many types of evaporator are there?

These three evaporator types are: Bare Tube Evaporators. Plate Surface Evaporators, and. Finned Tube Evaporators.

What are the classifications of evaporators used in food industry?

Different types of evaporators are used in the food industry including batch-type, natural circulation, rising-film, falling-film, rising/falling-film, and agitated thin-film evaporators.

What are the 4 types of condenser?

Air-cooled Condenser
  • 1.1. Natural Convection. In this type of condenser, air comes to contact with warm coils, absorbing the heat of refrigerant inside the coils, consequently the temperature of air increases. …
  • 1.2. Forced Convection. …
  • 2.1. Double Tube. …
  • 2.2. Shell and Coil Condensers. …
  • 2.3. Shell and Tube Condensers.

What is the principle of evaporator?

The evaporator works the opposite of the condenser, here refrigerant liquid is converted to gas, absorbing heat from the air in the compartment. When the liquid refrigerant reaches the evaporator its pressure has been reduced, dissipating its heat content and making it much cooler than the fan air flowing around it.

Which type of evaporator is best?

One of the more useful types of evaporators for difficult-to-handle materials is the agitated thin-film evaporator(Figure 8). Although tubular evaporators have been used successfully with a variety of materials, they have been less successful with heat-sensitive, viscous,fouling or high-boiling liquids.

What is the application of evaporator?

Common Applications for Evaporators

Food and dairy products such as tomato purees, milk, herbal extracts, gelatin, coconut water, and whey and milk proteins are all processed with the help of evaporators. The same is true for chemicals such as dyes, ammonium nitrate, glycerin, sodium nitrate, paints, and pigments.

What is the meaning of evaporators?

Definition of ‘evaporator’

1. a device in which evaporation takes place, as for thickening syrup. 2. the part of a refrigeration system in which the refrigerant absorbs heat and changes from a liquid to a gas.

What is the difference between a direct expansion and flooded evaporator?

An important difference between a flooded evaporator and a direct expansion (DX) evaporator is that the flooded evaporator operates in conjunction with a low-pressure receiver.

How do you classify a condenser?

Classification of condenser
  1. Air cooled condenser: Air is used as condensing medium. It is the easiest arrangement.
  2. Water cooled condenser: Water is used to removal of heat. Water cooled condenser is the most efficient.
  3. Evaporative condenser: Both air and water is used as condensing medium.

What is evaporator in HVAC?

An evaporator coil is the part of an air conditioner or heat pump that absorbs the heat from the air in your house. It is located inside the air handler or attached to the furnace.

What is evaporator in refrigeration system?

The evaporator is the second heat exchanger in a standard refrigeration circuit, and like the condenser, it’s named for its basic function. It serves as the “business end” of a refrigeration cycle, given that it does what we expect air conditioning to do – absorb heat.

What are the 3 major types of condensers?

Three main types are separated into: Air-cooled condensers. Water-cooled condensers. Combined air and water-cooled condensers.

What are the three functions of a condenser?

There are three very important functions the condenser performs in keeping your air conditioner performing its best. These include rejecting superheated refrigerant gas, condensation, and subcooling refrigerant once it is transformed back into a liquid state.

What is condenser efficiency?

The thermal efficiency of a condenser is defined as the ratio of actual rise in temperature of cooling water to the maximum possible rise.

What are the two types of condenser?

What are the Different Types of Condensers?
  • Air cooled condensers: use air as condensing medium.
  • Water cooled condensers: Use water as condensing medium.
  • Evaporative condensers: use both air and water as condensing medium.

What is difference between condenser and capacitor?

Capacitors are passive electronic elements with the ability to store electrical charges. A condenser refers to a device that can transform a substance from its vapor state to a fluid state.