Installing chillers in the upper floors of a city building is challenging but Engie Refrigeration came up with a unique solution for a hotel in Sydney.
Refrigeration engineers from Engie designed a water-cooled Quantum chiller to fit into a standard elevator. For this, the quantum is divided into its individual components and reassembled after transport.
The biggest challenge is the dimensions of the evaporator - it must be less than two metres long. As a result Engie created a Quantum chiller with a height of 2.19 metres, a width of 2.17 metres and a length of 2.67 metres.
The evaporator is 1.90 meters long and despite its small size, the Quantum has a cooling capacity of 1,100 kilowatts (kW).
Of course all the usual transport options were available like using a crane or helicopter. However, like many other cities around the world helicopters can only fly in Sydney with special permission.
The costs of installing a crane are very high in most cities and in Sydney they are in the six-digit range. In this particular case the Quantum chiller had to reach the 34th floor of the hotel for installation.
Engie Refrigeration managing director, Jochen Hornung, said the customer was keen to get the job done. Not only was the existing chiller out of date, he said the hotel wanted a more energy efficient solution.
“The oil-free operation eliminates the need for an oil separator, which makes Quantum chillers particularly space-saving and low-maintenance,” Hornung said.
“The integrated Open-Flash-Economizer and the magnetic-supported Quantum compressor ensure maximum energy efficiency.
“The chillers are also characterized by a large running area and high operating safety. Added to this, is the easy transport.
This saves the customer considerable costs and set-up times during the introduction of the chiller,” he said.
"We took the time to meet the customer's needs showing our flexibility as a company.
"We are very pleased that we are able to provide our customers with energy-efficient and smooth-running refrigeration, which is also easy to transport - even within a standard elevator."