Calorifier or Plate Heat Exchanger

Calorifier or Plate Heat Exchanger

Monday, 11 August 2014

McDonald Engineers has enabled a major college to transform their hot water system by using their PLATEflow solution which features a copper buffer vessel linked to an external plate heat exchanger (PHE).

The original design featured 2No. 1000 litre calorifiers to meet the demands of a state of the art building, which houses the university’s performing arts centre, training restaurant, media centre and a new energy and climate centre within the architecture hub.

But with space becoming an issue, McDonald Engineers worked with the consulting engineer to develop a solution using their PLATEflow system which would more than cope with the peak demands.

The PLATEflow system uses a plate heat exchanger to deliver a steady flow rate for the normal day to day hot water requirements.  However at certain times of the day, there are peak periods of high demand.  At that time the PHE continues to supply it’s steady flow rate and the buffer vessel delivers the shortfall in flow rate required. 

The solution in this case, meant they only had to heat and store 1000 litres of water, which dramatically reduces the running costs during periods of low hot water requirement.

McDonald Engineers’ Sales Director, Jamie Stewart, commented “The traditional approach to calculate the hot water demands of any particular project, is based on the number and type of outlets and the number of people using them.  This can lead to units being oversized for the majority of the time they are being used.”

“Commercial environments can present more of a challenge, with large variations in demand and the tendency is to err on the side of caution with a large capacity. However, our PLATEflow system provides a solution, which is not only space efficient, but also minimises running costs by delivering hot water as and when it is required.”