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LG Electronics - VRF Air Conditioning

Partial Load - Inverter Compressor - Active Refrigerant Control - Heat Exchangers - Split Coil

Technology within LG’s Multi V 5 VRF System

Dual Sensing Control

One of the most impressive features of LG’s MULTI V 5 is its Dual Sensing Control which helps the air conditioning unit evaluate climate conditions down to the smallest detail. Unlike conventional air conditioners which only track temperature, the MULTI V 5 measures both temperature and humidity levels for outdoor and indoor environments. This comprehensive understanding of multiple climate conditions helps the solution determine its parameters in order to achieve optimal energy efficiency and maximum indoor comfort levels.

Efficient systems like Smart Load Control makes it possible to control outdoor unit discharge refrigerant temperature, increasing energy efficiency anywhere from 15 to 31% depending on humidity conditions. Typical VRFs normally fluctuate considerably in order to maintain a set indoor temperature, making them highly inefficient. The MULTI V 5’s Dual Sensing Control also has a Comfort Cooling function which maintains operation around the desired temperature, delivering maximum user comfort.

Ultimate Inverter Compressor

The LG MULTI V 5’s new Ultimate Inverter Compressor offers unrivaled efficiency, reliability and durability. Improving on the 15 to 150 Hz operational range of its predecessor, it operates from 10 Hz to 165 Hz. This widened range increases part load efficiency and enhances the MULTI V 5’s ability to quickly reach the desired temperature.

The MULTI V 5 features an enhanced bearing system layered with PEEK (Polyetheretherketone) – an advanced material normally used in airplane engines – this efficient infrastructure allows the MULTI V 5 to operate for sustained periods without any oil. In addition, the MULTI V 5’s Smart Oil Management uses sensors to check the compressor's oil balance in real time, minimising unnecessary oil recovery operation.

Large Capacity ODU

With an innovative biomimetic fan, 4-sided heat exchanger, and improved compressor performance, the MULTI V 5’s efficiency and capacity have each been enhanced, making it possible for a single ODU to reach 26 HP. Utilising research from the Seoul National University’s Department of Mechanical and Aerospace Engineering, the engineers behind the MULTI V 5 drew on inspiration from humpback whale flippers when designing the fan. Moreover, the solution's advanced biomimetic fan significantly increases wind capacity.

Ocean Black Fin

Equipped with LG’s exclusive Ocean Black Fin, the MULTI V 5 is protected from corrosive substances such as salt, sand and other elements brought in by sea winds as well as industrial pollution. The black coating of the Ocean Black Fin heat exchanger keeps water from accumulating in order to minimise moisture build up. This durability enhancement prolongs the product's lifespan and lowers maintenance costs, paving the way for improved performance.

Active Refrigerant Control

LG’s Active Refrigerant Control automatically regulates the amount of refrigerant circulating each cycle.

Thanks to its ability to increase the flow of refrigerant incrementally, this precise five-step system leads to a 3% improvement in energy efficiency.

Heat Exchangers

The Variable Heat Exchanger Circuit, which implements LG’s patented variable heat exchanger technology, automatically controls the heat exchanger’s surfaces, selecting the optimal path hot and cold streams. This reduces energy loss and contributes a 15% increase to integrated energy efficiency.

1) Conventional

  1. The number and the direction of the path are fixed independent of temperature and operation mode. A fixed path limits efficiency.
  2. Compromising efficiency for each operation.

2) Multi V 5

  1. Variable Heat Exchanger Circuit adjusts the path operation modes, thereby contributing to an increase in energy efficiency.
  2. Maximising efficiency for all operations.

Advantages of a Split Coil

  1. Split defrost.
  2. Optimising efficiencies cooling, heating and partial load.
  3. Allows cooling down to -10°C by using single coil.

Click the PDF image to view the technical information in full

VRF Air Conditioning

Request LG Electronics Info

LG Electronics UK Ltd
AE Department
Velocity 2
Brooklands Drive
Brooklands
Weybridge
Surrey KT13 0SL

Email LG Electronics

Tel: 01932 331 400

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