What is the main drawback of an open type compressor?

The main drawback of an open type compressor is the increased likelihood of refrigerant leakage. This type of compressor does not have a sealed environment for the refrigerant, making it inherently more susceptible to leaks during operation. The compressor is typically driven by an external source, such as a motor, which leads to several areas where refrigerant can escape if not properly sealed. Such leaks can not only result in a loss of refrigerant, leading to reduced efficiency and performance, but they can also pose environmental and safety risks.

In contrast, other types of compressors, such as hermetic or scroll compressors, have sealed systems that help minimize the chances of refrigerant escaping. Therefore, when considering the operational integrity and the need for effective refrigerant containment, the open type compressor's design is a significant drawback due to its tendency to leak.