Heat pump 04 Accumulator & Muffler

Heat Pump part 4 adding common accessories Accumulator and Muffler.

The accumulator protects the compressor form liquid refrigerant ( low superheat). This is important for a heat pump when the outdoor temperature gets low and doesn't boil all the refrigerant to a vapor. but the screen and orifice' in the bottom returns the oil back to the compressor. When you have a burn out, the screen can clog up and starve the compressor of oil.
The Accumulator is mounted on the true suction line between the compressor and the reversing valve

The Muffler just quiet's the refrigerant flow by smoothing gout the pulsations in a hollow larger chamber.
It is installed in the true discharge line between the compressor and the reversing valve.

Special thanks to JD Kelly (Student_of_HVAC) for the graphics!