Heat recovery VRF system

The video tutorial explains a heating and cooling system where units can provide both functions simultaneously. It details the system's operation in cooling, heating, and mixed modes, highlighting the role of the compressor, branch controllers, and refrigerant flow. The tutorial also covers load balancing and heat recovery, ensuring efficient energy use across multiple units.

What is the primary function of the branch controller in the heating and cooling system?

• To direct the flow of refrigerant for heating or cooling

• To control the speed of the compressor

• To measure the temperature of the indoor units

• To provide power to the outdoor units

In cooling mode, where does the compressor send the hot refrigerant first?

• To the expansion valve

• To the outdoor unit

• To the branch controllers

• To the indoor units

How does the system provide both heating and cooling at the same time in mixed mode?

• By using separate compressors for heating and cooling

• By sending refrigerant to both indoor and outdoor units simultaneously

• By using a backup heating system

• By alternating between heating and cooling modes

What happens when the heating and cooling loads are equal in mixed mode?

• The outdoor units are used to balance the load

• The system shuts down to prevent overload

• The compressor stops running

• The thermal energy is transferred between units without using outdoor units

When might outdoor units be required in mixed mode operation?

• When the system is in full heating mode

• When the heating and cooling loads are not equal

• When all indoor units are in cooling mode

• When the compressor is not functioning