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Which refrigerant has the highest boiling temperatures at atmospheric pressure?
The refrigerant plays a key role in achieving vapor cycle air ... After that, and until all the water has been evaporated, the remaining boiling liquid stays at the ... of the higher temperature of boiling resulting from increased pressure.
Why The refrigerant should have low boiling point and low freezing point?
This occurs because the refrigerant must be capable of releasing excess heat easily. It can do this by boiling and having it in steam.
Does refrigerant enter the compressor as a low temperature low pressure gas?
Yes. The basic components of the refrigeration system are the refrigerant, compressor, condenser and receiver, expansion device and the evaporator. One cycle: Refrigerant travels to Compressor (A) to Condenser (B) to Expansion device (C) to evaporator (D). The refrigerant gas at low pressure and temperature is drawn into the compressor. The gas is compressed to a higher pressure, which causes an increase in the temperature. The refrigerant gas at a high pressure and temperature passes to the condenser (point B), where it is cooled (the refrigerant gives up its latent heat) and then condenses to a liquid. The high pressure, low temperature liquid is collected in the receiver. The high pressure liquid is routed through an expansion valve (point C), where it undergoes an abrupt reduction in pressure. That pressure reduction causes part of the liquid to immediately vaporize or flash. The vapor and remaining liquid are cooled to the saturation temperature (boiling point) of the liquid at the reduced pressure. At this point most of the refrigerant is a liquid. The boiling point of the liquid is low, due to the low pressure. When the liquid refrigerant enters the evaporator (point D), it absorbs heat from the process and boils. The refrigerant gas is now at low pressure and temperature, and enters the suction side of the compressor, completing the cycle.
What is the saturation temperature of vapour or the boiling temperature of a liquid?
Different liquids have different boiling temperatures, even the same liquid will have different boiling temperatures at varying pressures.
What can you notice about the temperature of sea water during boiling?
The boiling point of sea water is higher compared with pure water. Temperature remain constant during boiling.
Define a near-azeotropic refrigerant blend and give two examples.?
a blended refrigerant with less than 10F temperature glide, 41oA and 404A are examples.
What is the property of refrigerant 404A?
what is suction pressure of r407a
Can R22 be used with 404A refrigerant?
No, refrigerants cannot be blended.
Define a zeotropic refrigerant blend and give an example?
In a zeotropic blend, the blends boil out at different temperature but at the same pressure. typical example is R704
What should the sub cooling be on a txv 404a refrigerant freezer?
42
What is the low side pressure of a freezer using R 404A refrigerant?
if room tem is 70f 15psi
What is the low side pressure of a freezer using R-404A refrigerant?
if room tem is 70f 15psi
Which refrigerant has the highest boiling temperatures at atmospheric pressure?
The refrigerant plays a key role in achieving vapor cycle air ... After that, and until all the water has been evaporated, the remaining boiling liquid stays at the ... of the higher temperature of boiling resulting from increased pressure.
The term used to describe the fact that the refrigerant blend has a range of boiling or condensing points at a constant pressure?
Temperature glide
What refrigerant has the lowest boiling temperatures at atmospheric pressure?
R-502 has thelowestboiling temperature atatmosphericpressure. It can be boiled as low as -50 deg F before the boiling pressure goes into a vacuum.
What is the difference between azeotropic refrigerant and zeotropic refrigerant?
Azotropic will only have one boiling or condensing point for each system pressure negligible fractionation or temperature glide will occur Zeotropic will have a range of boiling and condensing points for each system pressure noticeable fractionationand glide will occur.
How do you change high temperature refrigerant and high pressure refrigerant in to low temperature refrigerant and low pressure refrigerant?
You cool it and run it through a metering devise.
