What is the formula for capacity of evaporator?

What is the formula for capacity of evaporator?

If the evaporator must move 400 gallons per minute: 14 x 400 = 5,600. Multiply the answer by 500: 5,600 x 500 = 2,800,000. This answer is the evaporator’s size, measured in BTUs per hour. Divide the answer by 12,000: 2,800,000 / 12,000 = 233.33.

How do I choose an evaporator?

A properly designed evaporator must, at a minimum:

  1. Be designed to effectively transfer heat at a high rate with minimum surface area to be cost-effective for installation,operations and maintenance.
  2. Effectively separate the vapor from the liquid concentrate.
  3. Meet the conditions required by the product being processed.

How do you calculate the heat transfer of an evaporator?

  1. Heat balance. Heat available per kg of steam. = latent heat + sensible heat in cooling to 91°C. = 2.164 x 106 + 4.186 x 103(134 – 91)
  2. Heat-transfer area. Temperature of condensing steam = 134°C. Temperature difference across the evaporator = (134 – 91) = 43°C.
  3. Heat balance.

What is the capacity of an evaporator?

• Capacity of evaporator is defined as the number of kilograms of water vaporized/evaporator per hour. The rate of heat transfer Q the heating surface of evaporator is the product of heat transfer heat transfer surface area and the overall temperature drop.

What is evaporator efficiency?

The measure of thermal efficiency of an evaporator train is called the steam economy (unit of water evaporated per unit of steam used) and the steam economy is directly related to the number of thermal effect in the train. Modern evaporators typically have 6 or 7 thermal effects.

How do you match an evaporator to a condenser?

Evaporator Coils Further to this explanation, in an ideal HVAC unit the two sets of coils are designed to match one another. The evaporator coil should be ideally sized to soak up the same amount of heat that the condenser coils are able to dump into the air outdoors.

Which is rising film evaporator?

A rising film or vertical long tube evaporator is a type of evaporator that is essentially a vertical shell and tube heat exchanger. The liquid being evaporated is fed from the bottom into long tubes and heated with steam condensing on the outside of the tube from the shell side.

Which evaporator is known as rising film evaporator?

long tube vertical
LTV stands for long tube vertical, it is also known as rising film evaporators. LTV Evaporators are one of the most used evaporators. It is basically a shell and a tube heat exchanger attached to a liquid separator.