higher  efficiency  -­‐  more  flexibility  

•  Sorp5on  heat  pumps:      -­‐  electric  output  unchanged      -­‐  more  useable  heat      -­‐  surplus  heat  for  chilled  water  •  Compressor  heat  pumps:      -­‐  less  power,  more  heat      -­‐  change  over  from  power  supply  to  power  demand  at  periods  of  low  electricity  prices  

Heat pumps

Compressor heat pump

Electric drive

Sorption heat pump

driven by heat

COP   4  

PER   1,6  

COP   1,7  

PER   0,1-­‐1,6  

Available sorption heat pumps  

5  kW  up  to  10  MW  or  even  more  Driven  by  hot  water  ≥70  oC  or  exhaust  gases  or  steam  

Compressor  heat  pumps  

•  Units  of  1  kW  up  to  20  MW  available  •  Important  development:  industrial  high  temperature  heat  pump  

Turbo  compressor    unit   ReciprocaGng  compressor    NH3  refrigerant  for  up  to  80  degrees  water  

Op5on  1:  higher  efficiency  

 Case  Bjerringbro  District  Hea5ng  AbsorpGon  heat  pump  driven  by  exhaust  gas  heat  of  CHP  

Case  Vinderup  District  Hea5ng  Electric  compressor  heat  pump  upgrades  low  temperature  heat  of  biogas  CHP  

Bjerringbro:  +  930  kW  heat    total  efficiency  up  from  90  to  102  %  LHV  

Vinderup  District  Heat:  biogas  CHP-­‐HP      total  efficiency  105  %  LHV  heat  pump  +  1  MWth    -­‐  0,25  MW  e  

Exhaust  gas  18  oC  

Op5on  2:    flexible  response  electricity  market  

 DelV  Harnaschpolder  District  Heat  

 1  CHP  unit  1.8  Mwe        operaGng  at  high  electricity  prices  

 1  high  temperature  heat  pump  1.2  MWth  

 operaGng  at  low  electricity  prices  

Heat  source  effluent  of  sewage  treatment  plant  appr.  15  o  C  Heat  pump  supplies  to  grid  at  70  o  C  

Seasonal  storage  CHP  +  absorp5on  heat  pump  

Office  city  of  Apeldoorn  

•  CHP  unit  for  base  load  electricity  •  Heat  of  CHP  goes  into  absorpGon  heat  pump  

In  summer:  Heat  pump  supplies  chilled  water  to  fan  coil  units  Condenser  heat  goes  into  seasonal  storage  

In  winter:  Heat  pump  stores  cold  in  seasonal  storage  Condenser  heat  goes  to  fan  coil  units  for  heaGng    

summer   SUMMER  

Cooling  office  city  Apeldoorn  

Condensor  in  Condensor  out  

Chilled  water  

Heat  CHP  

Surplus  heat  

/  

Winter  

HeaGng  office  city  Apeldoorn  

Heat  CHP  

HeaGng  system  

Stored  warm  water  

Chilled  water  to  storage  

Surplus  heat  

advantages  

•  UGlisaGon  of  condenser  heat  for  winter  saves  energy  

•  Seasonal  storage  of  cold  reduces  energy  for  cooling  in  summer  and  installed  capacity  for  chillers  

•  ConsumpGon  of  water  for  cooling  tower  can  be  reduced  drasGcally    

•  In  a  well  balanced  system  no  cooling  tower  needed  

CHP+SHP+seasonal storage in a greenhouse  

It’s  all  about  smart  engineering  

idee@energieprojecten.com