When Cobb and Cox discussed Garden Grove Elementary’s cooling needs, Cox noted LG’s proven performance and reliability with variable refrigerant flow applications, and he felt the LG Inverter Scroll Chillers (for cooling only), though fairly new to the market at the time, would be able to meet the school’s needs.
This chiller raises the standard in the air-cooled chiller equipment category, according to Cox. It is designed for cooling and/or heating in both comfort and process applications. The LG Inverter Scroll Heat Pump Chiller performs at 100 percent of its rated cooling capacity up to 110° Fahrenheit. Additionally, cooling performance data is available at operation of up to 125° Fahrenheit for 460V systems and 122° Fahrenheit for 208V-230V models.
The 20-ton LG ISHPC has two refrigeration circuits, which are capable of independent operation to provide redundancy. The 20-ton unit also offers 50 percent of its rated capacity in the event of a compressor failure while the largest LG unit, a 60-ton chiller, offers 83 percent capacity with a single compressor failure. LG made a conscious decision to automatically include redundancy into the development of the Inverter Scroll Heat Pump Chiller. Therefore, if the compressor or another part of the refrigerant circuit fails, the effect on the overall capacity of the system is kept to a minimum, so a large portion of the load can still be met, which almost eliminates all downtime or the need to rent equipment.
Cox added, “The ability to have multiple smaller chillers drastically helps with the overall reliability of the system because if you lose one of the modules, you still have a 60 percent capacity versus losing a single Chiller and being entirely out.”
With the LG chiller’s impressive integrated part-load value of 19.46, engineers, owners, and contractors can apply the installation in many types of energy efficient applications and market sectors for both new and retrofit projects. What’s more, built-in compressor sound insulation enables industry-leading sound performance for LG heat pump systems.