Answer :
Final answer:
The rate of refrigerant flow through a capillary tube or orifice is determined by the pressure difference, length and radius of the tube, and the viscosity of the fluid.
Explanation:
The rate of refrigerant flow through a capillary tube or orifice is determined by several factors, including the pressure difference across the tube or orifice, the length of the tube, the radius of the tube, and the viscosity of the fluid. This can be described by Poiseuille's law, which states that the flow rate is directly proportional to the pressure difference and the fourth power of the radius, and inversely proportional to the length of the tube and the viscosity of the fluid.
