Table of Contents
Why condenser is a constant pressure?
The only reason the pressure in the condenser stays constant, is because the space previously occupied by the condensed steam, which is now liquid water, is continuously refilled by new fresh steam. This process keeps the pressure in the condenser constant.
What happens when the refrigerant passes through the condenser coil?
Refrigerant flows through the compressor, which raises the pressure of the refrigerant. Next the refrigerant flows through the condenser, where it condenses from vapor form to liquid form, giving off heat in the process.
What is constant in refrigeration cycle?
Constant evaporator pressure is maintained by the interaction of the spring and evaporator pressures. As the compressor cycles off, residual refrigerant in the evaporator boils off; this increases evaporator pressure and closes the valve. Figure 2. AXV system showing high superheat at a heavy evaporator loading.
Does pressure remain constant in a condenser?
Yes, pressure changes at evaporation or condensing. But it is nevertheless constant throughout the pipe.
What is the condenser pressure?
The condensing pressure is the pressure at which the refrigerant is phase changing from a vapor to a liquid. This phase change is referred to as condensation. Thus the term condensing pressure.
What is condenser in refrigeration?
3 Condenser. The function of the condenser in a refrigeration system is to transfer heat from the refrigerant to another medium, such as air and/or water. By rejecting heat, the gaseous refrigerant condenses to liquid inside the condenser.
What keeps the evaporator pressure constant regardless of the load?
a) The valve maintains constant pressure in the evaporator during compressor operation regardless of the load.
What happens if condenser pressure increases?
Generally as the condenser pressure increases both thermal efficiency and net power output decrease whereas the steam consumption increases. Condenser pressure is affected by the cooling water temperature and mass flow rate.
What happens to the refrigerant when it enters the condenser?
The refrigerant enters the condenser as a superheated (hot) high pressure gas, it dumps its heat into the air being blown across by the fan, this drop in temperature condenses the refrigerant. The refrigerant leaves the condenser as a regular temperature, saturated high pressure liquid.
Why does the pressure in the condenser of a boiler stay constant?
The only reason the pressure in the condenser stays constant, is because the space previously occupied by the condensed steam, which is now liquid water, is continuously refilled by new fresh steam. This process keeps the pressure in the condenser constant.
How does an expansion valve affect the temperature of a refrigerator?
The expansion valve will limit how much refrigerant can pass through at one time, this results in the refrigerant dropping in pressure and temperature. The refrigerant leaves the expansion valve as a cold, saturated low pressure liquid.
What happens to the volume of refrigerant during compression?
During compression, the quantity of fluid remains the same but the volume decreases, this increases the pressure and temperature. The refrigerant leaves the compressor as a superheated (hot) high pressure gas.