Announcing that the GEA Multi-DENCO range of precision climate-control units will replace the old Denco T and E ranges, GEA has given the following launch details in a news release: the range will be launched in winter 2012/2013 with the Version A, which operates with an air-cooled condenser. Version C will be water-cooled, and Version X will be equipped with a split direct evaporator. All three versions can be retrofitted with an additional cold-water heat exchanger to provide the CombiCool version, the company said, and added that the water-cooled Version W can be expanded to a Version F by adding a free-cooling function. The versions will be introduced to the market, one after the other, beginning in 2013.

The manufacturer lists the following product features and advantages:

  • The new units will be available in various model sizes, with 5 kW up to a maximum of 130 kW cooling duty and offer constant temperature and relative humidity.
  • The units operate with the refrigerant R410A and, under typical conditions, operate with a sensible heat ratio (SHR) of 1, implying that they can cool the air without at the same time dehumidifying it.
  • In the recirculating-air mode of operation, the units control air conditions at a stable level of ± 1 K and ± five per cent relative humidity.
  • The possibilities of employing the units extend from computer centres and machine rooms with intensive production of exhaust heat, to measuring laboratories and art museums.
  • The enhanced energy efficiency in units is achieved first by an optimised configuration of heat exchangers and fans as primary components – for which the circulated air must overcome less air resistance in the unit. Second, the heat exchanger has greater dimensions. The resulting large air volume is likewise responsible for the stability achieved in temperature control.
  • The units are equipped with EC fans that feature very low power consumption.
  • Since they operate especially energy-efficiently under partial load, they are ideally suited as standby redundant systems.
  • They come in five different cooling systems.