Air conditioning systems VRF/VRV
-
What is a multizone air conditioning system?
-
How VRV/VRF systems work
-
Advantages of air conditioning systems based on multizone VRV/VRF
Do you have rooms in your office that are difficult to cool in summer or heat in winter? Or your employees argue about what the air temperature should be. Are you looking for ways to reduce your energy bills? The organization of separate temperature zones in your office with the help of a multi-zone air conditioning system based on VRV/VRF will help you solve all these issues.
What is a multizone air conditioning system?
Multi-zone VRV/VRF system is an air conditioning system with an inventory compressor that creates different microclimate temperatures in each rooms. The number of temperature zones in one system depends on the number of indoor units and can reach 256 for systems with a capacity of up to 404 kW. Multizone systems are also called VRV (Variable Refrigerant Volum) or VRF (Variable Refrigerant Flow).
What is the difference between VRV and VRF systems?
The name "VRV" was patented by Daikin. Multizone systems of other manufacturers similar in principle are called VRF systems.
Which principle of operation of VRV / VRF systems?
A multi-zone air conditioning system consists of many indoor units of different capacities and types and one or more outdoor units. The external unit is connected to the internal units by freon lines. The compressor-condenser unit, located in the outdoor unit of the VRF, compresses the Freon, which enters it in a vapor state from the indoor units, and condenses it into a liquid on the condenser heat exchanger.
The condenser is blown by outside air and takes heat from the external heat exchanger. Refrigerant in a liquid state is supplied to the heat exchanger of the evaporator of the internal units or the ventilation unit through lines and refnets. Indoor units have a (TRV) throttle valve that regulates the required amount of freon supplied to the evaporator. Freon evaporates, turning into a liquid state and cools the heat exchanger. The fan of the indoor unit blows the heat exchanger of the evaporator with air from the room and cools it. After that, the gaseous refrigerant with a temperature of 5-15 °С is collected again on the external unit through the refnet splitters and pipes.
A multi-zone system can be two- or three-pipe. A two-pipe VRF system is used to cool or heat air in all rooms, and a three-pipe system can simultaneously cool air in some rooms and heat it in others.
The main advantages of a multi-zone air conditioning system
1. The cooling power of one system can be from 10 to 430 kW, so it can be used both for a residential building, office or commercial buildings, and for large industrial objects.
2. The total length of the freon line can reach 1000 m, and the height difference between the internal and external blocks is up to 200 m.
3. VRV / VRF systems are very flexible in terms of equipment use, indoor units of different types and capacities, ventilation units and air curtains can be used in one system. Also, the system can be completed with other internal units, and already installed units can be partially connected, when entering the object step by step.
4. Multi-zone systems have the ability to adjust the microclimate parameters of each room separately with high accuracy.
5. VRV/VRF systems allow you to save energy by using heat recovery.
6. The equipment is quite reliable and has a service life of 10-15 years.
7. VRV/VRF systems have fairly low maintenance and operating costs, which allows the equipment to pay for itself fairly quickly compared to conventional air conditioners.
VRF / VRV are highly reliable and highly efficient air conditioning systems that are easy to maintain and flexible in design. Due to these advantages, VRV/VRF systems are widely used in industrial and commercial air conditioning.
RICOS specialists will help you choose and design an air conditioning system based on VRF RICOS.