Could You distinguish mini split system multi split with VRF
DATE:2021-12-27
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what is mini split air conditioner ?
Mini-split systems are indeed split systems, with an outdoor condensing unit and an indoor blower-coil, which is often referred to as a head. Some commonheads are high wall mount, ceiling mount, floor mount, and compact cassette – which tucks away above the finished ceiling. As the name mini-split implies,both the outdoor and indoor units are much smaller than found in traditional unitary systems. For the most part, the indoor units are designed to be mountedin the space they are conditioning, with no ductwork. For this reason, many people also refer to mini-split systems as ductless systems. However, mini-split systemsare actually available with both low static and high static ducted indoor heads which are designed to be installed in a concealed area. Static refers to the static airpressure difference the blower is designed operate against while moving the air. Low static units are designed for very short, single runs – not complete duct systems.High static indoor units are designed to be used with complete duct systems. They are used more in commercial applications than residential applications.
what is multi split air conditioner?
Multi-split units are designed to be used with multiple indoor heads. The idea is to install one outdoor unit to supply from two to four indoor units. On typicalmulti-split units, the refrigerant line sets for all heads run back to the outdoor unit. The outdoor unit has connections for up to four indoor units. Another typeof system which is often referred to as multi-split uses a small refrigerant network for up to nine heads. This type of system has one line set with branches that wye off at each indoor unit. These are really more like a small variable refrigerant flow (VRF) system.
what is vrf system ？
The term variable refrigerant flow (VRF) has two uses within the industry. The more global definition simply refers to any system which varies the flow or refrigerant to match the load. This is usually accomplished by changing the compressor speed. Truthfully, most mini-split and multi-split systems fit the global definition of variable refrigerant flow. There are now several unitary systems which incorporate variable refrigerant flow. Most of these systems use variable speed compressors to match the compressor capacity and refrigerant flow to the load。