CRISTOPIA NEWS

The Newsletter of Cristopia Energy Systems

Number : 13

August 1999

 

Brewery CHP with
Cristopia's STL

 

     A Scottish brewery has recently taken delivery of a CRISTOPIA eutectic thermal store, with a fusion temperature of - 10°C, to enhance the performance of a new combined heat & power (CHP) plant.
Self-generation of electrical energy can provide major financial benefits for the user. However, two major factors influence the degree to which benefit can be derived from this technology :
  • firstly, the degree of match between electrical load and useful application of recovered 'waste' heat ;
  • secondly, period of operation, i.e. 8 hrs/day, 5 days per week or 24 hrs per day, 7 days per week.

     At this brewery the CHP plant was selected to provide a base load of electrical energy throughout the operation day.
     During the overnight period a significant demand for hot water is still present; however, the electrical demand diminishes significantly during this time. There is a minimal base cooling demand during this period. This mismatch overnight will result in a loss of system efficiency, 'excess' electricity is generated and plant performance drops-off.

  
SOLUTION

 

 

The inclusion of a CRISTOPIA eutectic thermal store with a fusion temperature of - 10°C.


Overnight, the 'spare' electrical capacity of the CHP plant is used to power one of the refrigeration plant compressors. The cooling generated is stored in the eutectic tank for use the following day.

 

Cristopia Energy Systems : 78, chemin du Moulin de la Clue - Quartier Cayrègues - 06140 Vence - France
Tel : 33 (0) 4 93 58 4000 - Fax : 33 (0) 4 93 24 29 38