Blog

Latent heat is heat identified by a change of state and no temperature change of the substance.

A surge tank generally includes an automatic water makeup system with a float chamber that is located at the minimum water level.

In almost all heating applications, the control valve of a heat exchanger should have a fail-closed action so that the process does not overheat if the valve fails.

Heat always flows from a material having a lower temperature to a material having a higher temperature.

A ___ is a device that sends a signal to a controller, such as a programmable logic controller or other digital controller.

Heat always flows from a material having a lower temperature to a material having a higher temperature.

Condensate may be directed to a condensate return tank or wasted to prevent boiler water contamination.

A(n) ___ is a boiler condition that occurs when the flame in a boiler furnace has been unintentionally lost.

A(n) ___ valve is normally opened by the operator to isolate the feedwater to the boiler.

The three classifications of refrigerants most technicians work with today are chlorofluorocarbons (CFCs), hydrochloroflurorocarbons (HCFCs), and hydrofluorocarbons (HFCs).