Final answer:
A TEV with a dead power element will not operate properly in a refrigeration system.
Step-by-step explanation:
A TEV (Thermal Expansion Valve) is a device used in refrigeration systems to control the flow of refrigerant to the evaporator coil. The power element of a TEV is responsible for sensing the temperature of the refrigerant and adjusting the valve accordingly. If the power element is dead or not functioning, the TEV will not be able to control the flow of refrigerant and the system will not operate properly.
Example:
For instance, if the power element of a TEV is not sensing the lower temperature accurately, it may not open the valve enough to allow sufficient refrigerant flow to the evaporator coil. As a result, the coil may not cool down as it should, causing the system to run inefficiently and not provide the desired cooling.