Lennox Air to Water Chiller Innovations
Heatcraft offers a range of Lennox Air to Water Liquid Chillers to suit most chilled liquid applications. The Neosys™ and Ecolean™ are technically impressive innovations with an array of features including R410A multi scroll compressors, Owlet™ variable speed fans and eDrive™ variable water flow which optimise performance, reduce noise and minimise carbon footprint.
In a water system, the pump is one of the main energy consumption items. The energy costs of pumping can represent more than 20% of the total energy cost of a chiller. Lennox have addressed this with their eDrive™ variable speed pump technology. At full load, eDrive™ automatically controls energy costs via an electronic adjustment of the pump curve. At partial load eDrive™ automatically reduces the chiller pump speed. During shutdown periods, the chiller operates at minimum speed and on starting eDrive™ acts as a soft starter minimising start-up current.
Another important feature of both Neosys and Ecolean is an adjustable sound level for night and day to comply with surrounding acoustic requirements. A patented Active Acoustic Attentuation System™ enables the user to program noise levels by time slot and then choose the performance or required noise level mode. The Active Acoustic Attentuation System takes care of everything. It automatically adjusts the airflow from the Owlet variable speed fans according to the building load while complying with the permitted sound level. It also enables floating condensing pressure management.
The impressive Neosys Air to Water Chillers offer the options of partial heat recovery and free cooling efficiency. Partial heat recovery is enabled via installation of additional heat exchangers in the compressor discharge lines, These are designed to recover 15% of the compressors’ rejected heat. These heat exchangers can supply hot water up to 60oC which is ideal for heat recovery applications or where large amounts of hot water are consumed – ideal for hosing down process areas.
Further power savings can be gained through the optional Neosys free cooling feature. The unit utilises one or two sets of “V” coils at the rear of the unit for free ambient pre-cooling. When the ambient temperature falls below the return water temperature by 3oC or more, motorised valves open to allow by-pass return water to flow through the free cooling coils. The Neosys free cooling function operates as a cooling stage that has a priority on the compressor stages, thus limiting compressor running time and extending the life expectancy of the compressor.
Both the Neosys and Ecolean feature 7 day programming via the ClimaticTM control which manages power consumption according to use - automatically switching to occupation mode, unoccupied mode or frost free. Both units can also be seasonally adjusted to offset the water set point - further optimizing power consumption.
The Lennox range of chillers are capable of operating down to -10oC with the use of Glycol. The chillers are European designed and made and feature a lightweight, durable construction with a compact footprint. The Lennox Neosys offers cooling capacities up to 1080kW, while the smaller Lennox Ecolean offers cooling capacities up to 205kW.
The Neosys and Ecolean series of Air to Water Chillers are available now from Heatcraft Australia. For more information contact your Heatcraft Representative on 13 23 50.
Heatcraft's Generous Foodbank Donation
Heatcraft Australia is proud to give back to the community. The company established the ‘Heatcraft Helping Hands’ initiative only 4 years ago, but in that time, has donated over $80,000 to Australian and New Zealand charities.
In 2012/13 the Charity of Choice has been Foodbank.
Foodbank is the largest food relief organisation in Australia. They source donated and surplus food from the food and grocery industry and distribute it via charitable welfare agencies, to people in need. “Heatcraft Helping Hands begins with the generosity of our people. We fundraise throughout the year and our employees remain enthusiastic and committed. We value their contribution and as a company match dollar for dollar the donations they make”, commented Bill Moltner, Managing Director Heatcraft Australia & New Zealand.
As a result of 2012 fundraising efforts, Heatcraft Australia proudly presented a cheque for $21,000 to Foodbank. This amount was made up of $7,000 worth of employee fundraising – which was matched by Heatcraft Australia. $14,000 then became $21,000 when global parent Heatcraft Worldwide Refrigeration also generously matched the employee contributions.
“The association has been rewarding for both parties and a great synergy has evolved”, continued Bill. In addition to monetary donations, Heatcraft Australia has also donated Kirby Refrigeration Equipment for the Foodbank storage facilities at Wetherill Park, NSW. Heatcraft also offer employees the opportunity to volunteer for a day at one of the Foodbank sites. “It is a rewarding exercise that our staff value”, concluded Bill.
In his acceptance speech, Foodbank's CEO, John Webster highlighted that $21,000 enables Foodbank to provide 42,000 meals to needy families. Heatcraft will continue the association with Foodbank throughout 2013.
For more information about foodbank, visit www.foodbank.com.au.