Calor powers National Trust’s first LPG CHP unit
Calor gas is being use to power the National Trust’s first LPG CHP unit. It is in Cornwall at Trelissick Garden near Feock. The decision to introduce a low-carbon heating solution was made when a project was commissioned to extend and refit catering facilities at the site. Already used for cooking, Calor LPG was chosen to power the CHP unit, displacing oil which had previously been used for heating. It was established that there would be a base electrical load 24 h a day, seven days a week. For most of the year, there was also a base heat requirement — making CHP a good choice. SJH Design Services recommended a Baxi DACHs mini CHP unit with sufficient capacity to meet the needs of the new catering facilities. It acts as a lead boiler and also generates electricity. The CHP unit is support by standby LPG-fired condensing boilers controlled by the BMS. By generating heat and electricity from a single source, CHP can achieve overall fuel efficiencies of 75 to 90%, considerably reducing energy costs and carbon emissions compared with electricity from a centralised power station.