Energy Efficiency

Many people are interested in maximizing energy efficiency, by using recuperative plate heat exchangers within air–handling units warm–air heating of large commercial and industrial buildings can be effectively achieved.

Whilst best practice and new building techniques ensure buildings are now much better insulated, it is a fact that significant heat losses via the building structure are becoming a thing of the past. Nonetheless, buildings must be well ventilated and that ventilation still account for a large percentage of heat loss, no matter how well the building has been insulated. So a balance must be achieved of the essentials ventilation, air quality, insulation and heating efficiency.

Heat recovery

With this in mind, it makes economic and environmental sense to recover as much heat as possible from exhaust air expelled from the building. Among the most efficient ways of achieving this is installing a recuperative plate heat exchanger within the air-handling unit.

Few people realize that warm air heating systems achieve energy efficiency from the recuperative plate heat exchanger. The exchanger offers a high thermal conductivity that optimises heat transfer from warm exhaust air to incoming fresh air.

For many years now crossflow plate heat exchangers used in ventilation systems and air-distribution. efficiencies of 50 to 60% have been assessed in high airflows and heat-recovery rates. There is now a new generation of counterflow plate heat exchangers which have managed to increase the efficiency for standard HVAC applications up to 85%.

Thus now designers have the freedom to incorporate adequate ventilation whilst at the same time reducing energy consumption and carbon emissions.