Refrigeration
What are the main components of the refrigeration cycle?
Evaporator, Condenser, Metering Device, Compressor
What is AC and DC?
Direct Current and Alternating Current
What is cold?
The absence of heat
What is static pressure?
the air resistance within a system
What is SBE?
Service Business Evolution
What are the three refrigerant recovery methods?
Passive, Active, Push-Pull
What is a parallel circuit?
A circuit that has two or more paths for current to flow through. Voltage is consistent throughout the circuit.
What is conduction?
Energy transferred by direct contact
Why does static pressure increase?
Dirty filters, coils, blower motor
What is Bluon?
An AI tool for service techs to use on a call when they have questions, they don't know the answer to.
What is subcooling measuring?
What is a capacitor?
What is sensible heat?
This type of heat causes a temperature change in a substance without changing its state
What is the formula for total pressure in a system?
Static pressure + velocity pressure = total pressure
What do you do on the way to a call?
Call the customer and let them know you're on the way and how far out you are.
What is the expansion valve?
This component is responsible for reducing the pressure and temperature of the refrigerant without performing any work.
What is a relay?
What is refrigeration?
This is the term for heat being removed from the space. measured in BTUs.
What is airflow decreasing?
Static pressure increasing in an HVAC system
What is TESP and TISP
Total External Static Pressure. Total Internal Static Pressure.
What state should refrigerant be recovered?
Refrigerant should be recovered in liquid state when possible, to reduce recovery time.
What is conduit?
What are the gas laws?
Boyles Law, Charles Law, Dalton Law
What is a damper?
The component in a duct system that regulates airflow to different areas or rooms
What is a manometer?
Tool used to measure both TESP and TISP by connecting to ports in the ductwork and air handler.