Thermostatic expansion valves (TXVs) come in many different shapes and sizes. Although they all are designed to control the superheat value of the refrigerant leaving an evaporator, there are some differences among TXVs that either enhance their operation or slightly change how they operate.
The capacity of a compressor can be affected by a refrigeration system’s ever-changing pressures. In addition, suction pressure entering the compressor will change the density of the suction gasses within the compressor and affect its capacity.
The devil is in the details, and the wrong choice can cause issues now or in the future
May 1, 2017
When replacing a component, it is generally best practice to obtain its replacement by referencing its part number and installing a component with the same part number. Unfortunately, this is not always possible or practical. Due to the nature of the systems we service, many times we are forced to select a replacement component based on either a cross-reference or by matching its specifications to those of the original component.
The case can be made that recovery and reclamation begins with keeping refrigerants in the system where they belong; refrigerant that leaks out into the atmosphere is never going to be recovered or reclaimed.
In a perfect scenario, the oil in a refrigeration or air conditioning system would stay inside the compressor’s crankcase to lubricate the compressor’s moving parts. However, because of ever-changing heat loads on the system and varying system conditions there is no such thing as a perfect system in the real world.
The right attitude and a willingness to learn can make tough jobs easier
April 3, 2017
There are times when determining the cause of a system problem can be quite difficult. Those are the times when a “master” technician will shine above the others. There are many qualities that allow technicians to be very good troubleshooters. One of these qualities is the attitude they take to the job and how they approach looking for the problem.
Several leading compressor manufacturers weighed in with insights and advice for contractors and technicians as they learn how to work safely with the equipment utilizing these so-called alternative refrigerants as they transition into primary refrigerant choices.