The use of a scroll type compressor in a heat pump can eliminate the need for which component?

A scroll type compressor can effectively eliminate the need for a suction line accumulator due to its design and operational characteristics. In conventional systems, a suction line accumulator is typically used to prevent liquid refrigerant from entering the compressor during low-load conditions, thereby protecting the compressor and ensuring its efficiency. However, scroll compressors are inherently designed to handle small amounts of liquid refrigerant without damage. They can efficiently compress vapor while managing any liquid refrigerant present, reducing the risk of liquid slugging, which often necessitates an accumulator in other compressor types.

This ability allows for a more compact and efficient system design, as the absence of a suction line accumulator simplifies installation and reduces the overall cost of the heat pump. In contrast, the other components listed—heat exchangers, reversing valves, and expansion valves—are essential for the operation of the heat pump system, regardless of the compressor type.