Our Solution-

Under contract by Mechanical Services Ltd (MSL) we installed a Borehole supplemented Heating and Cooling system to serve the school.

Due to the predicted performance drop-off from the Boreholes during prolonged and intensive Cooling operation, the intention was to limit the provision of Cooling based on their Flow Temperatures. There is a seasonal drift in these Flow Temperatures due to the Heat being rejected to the Ground. If Heat is rejected to the Boreholes too rapidly through the early cooling season, the borehole Flow Temperature increase reduced the Cooling performance when it is required the most.

To prevent this, the Borehole and Underfloor Flow and Return Temperatures are monitored throughout the Summer and perform calculations are undertaken to predict the remaining capacity in the Borehole and remaining requirement for Cooling. Based on these calculations, once an unsustainable Flow Temperature increase is detected from the Room Setpoints are raised to reduce the Cooling being provided. Should the control calculate a surplus in Borehole capacity as the Season progresses, the Room Setpoint are lowered to increase the provision of Cooling to the required areas. This function is capable of self-learning such that the operation is optimized over the course of successive Cooling Seasons.

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At a Glance-

Industry:
Education

Location:
Surrey