Controlling the head pressure helps maintain pressure drop across the metering device and prevents the evaporator from freezing, in the case of air conditioning, and excessive freezing in refrigeration systems.
As a sustainable solution for grocery’s end-to-end cold chain fulfillment needs, Phononic's ACT 2000 features a proprietary thermoelectric-based cooling platform that eliminates refrigerants and HFCs while meeting demanding refrigerated and frozen cold chain needs.
Federal regulations, state building codes, and safety standards are evolving to support the emergence of lower-GWP alternatives, and as a result, many have questions about the path forward, compliance timing, and refrigerant safety.
There are advantages and disadvantages to being a refrigeration technician. The industry needs to work together to reduce the disadvantages and expand the opportunities, so that people want to make a career in refrigeration service and installation.
There are several reasons why the compressor discharge temperature of a refrigeration system can be high when the condensing temperature is not, and a checklist can help a technician figure out the root problem.
At the AHR Expo, refrigeration manufacturers displayed their latest equipment and components that are geared toward the commercial refrigeration market.
Technicians should learn how to troubleshoot defrost timers, as they can be the culprit if a freezer that uses an electric heater as its supplemental heat source has a frozen evaporator coil.
If a potential relay is malfunctioning, the compressor motor is in danger of not starting, stalling, locking rotor, or even burning out. That is why technicians should understand how to troubleshoot potential relays.
Technicians should understand how heat transfer works in a refrigeration system, as well as the four laws that describe how temperature and pressure changes affect the state of refrigerant in a sealed piping system.