how temperature drops in capillary tube actually?
2006-07-21 04:30:30 · 0 answers · asked by kiran k 1 in Science & Mathematics ➔ Engineering
Thre are two parts of a refrigeration loop where the temperature drops. One is the heat exchanger that cools the just-compressed hot refrigerant and allows it to liquefy; that's the radiator-like object on the back of your refrigerator. The other provides the cooling the loop was designed to supply, and that's the evaporator; in a refrigerator it surrounds the freezer compartment. In the evaporator the cooled liquefied refrigerant passes through a small nozzle or capillary, which acts as a flow restricter, into an expansion chamber where it evaporates and thus absorbs heat from the cooled area. The evaporator isn't really a capillary but a space where the refrigerant can expand as it evaporates.
EDIT: Well, I was wrong; there are some systems that use the capillary itself for refrigerant expansion. The principle is the same, with evaporation occurring inside the capillary. See the ref.
2006-07-21 04:44:29 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
Refrigeration Capillary Tube
2016-11-16 14:34:06 · answer #2 · answered by ? 4 · 0⤊ 0⤋
A capillary tube is primarily an expansion device. When the liquid refrigerant passes through capillary, it expands i.e pressure gets reduced.
When the pressure of liquid refrigerant goes below the saturated pressure at the given temperature, liquid starts becoming vapor. But you require latent heat from converting liquid to vapor.
So, a portion of liquid refrigerant extracts heat from remaining portion of liquid and becomes vapor. As heat is extracted from the remaining portion, it gets cooled.
The state of refrigerant after capillary is partly vapor and partly liquid.
2006-07-23 17:09:29 · answer #3 · answered by absolutezero 2 · 1⤊ 0⤋
The refridgarent gas ,like R-12 R22 is condensed to liquid as it passes through the condenser under hi pressure and emited through a cap line whitch is verry small dia. into the evaparator at a temp uasuallu at 0 degrees or lower.
2006-07-21 16:15:28 · answer #4 · answered by Dummy 3 · 0⤊ 0⤋
the temperature drops due to convectional flow of heat.
In capillary tube the surface area is more and therefore heat convection is more.
see the convection heat formula and analyze.
2006-07-21 06:25:16 · answer #5 · answered by dhamas 3 · 0⤊ 0⤋
A very fine toothed hack saw blade will work for you. Also, you could use a cutting wheel on dremel tool....
2016-03-22 17:26:04 · answer #6 · answered by Anonymous · 0⤊ 0⤋