Ontwikkelingen van hoge temperaturen warmtepompen Kenneth Hoffmann

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1 Ontwikkelingen van hoge temperaturen warmtepompen Kenneth Hoffmann

2 Ontwikkelingen van hoge temperatuur warmtepompen KENNETH HOFFMANN, NOVEMBER, 2017

3 Why are industrial heat pumps needed? 3

4 How do industrial heat pumps contribute? Heat pumps upcycles waste heat and is the most efficient use on natural energy source. Sustainable biomass only harness 1% of the solar energy Green electricity grid makes heat pumps a zero carbon heat source! Using seawater, sewage water, waste water, ground source water, cooling tower water etc, gives high efficient heating all year, independent on ambient temperature. Proven technology, competitive investment District heating / District cooling is key to improved energy optimisation for carbon neutral EU by 2050 Temperatures of network at getting reduced each year - > implying higher COP s 4

5 CO 2 Emission Reduction by using a Heat Pump g/co2 per kwh heating UK Carbon emission [CO2] Natural gas 40 Heat pump with COP Heat pump with COP 5.0 with green electricity Year United Kingdom GEA Heat pumps Traditionally calculated saved CO 2 Actual saved CO 2 X 2 The World is no longer steady state For a carbon neutral future (2050) 5

6 Ammonia heat pumps GEA Heat pumps

7 Limitations with ammonia heat pumps Ammonias critical point 132.2⁰C, 113 bar Technologically available limit 100⁰C, 63 bar Commercially available 90⁰C, 52 bar 7

8 PED limitations when using ammonia refrigerant For 52 bar ammonia heat pump the latest version of PED describes that a less than 10% margin can be approved if accurate safety device is applied. 52 bar -10% = 50.5 bar (90.3⁰C) set point for safety valve 49.0 bar (88.8⁰C) Internal safety valve 48.5 bar (88.4⁰C) alarm 48.0 bar (87.9⁰C) compressor limiting = Maximum design point: 87⁰C condensing pressure = 85⁰C hot water from heat pump Commercial range of ammonia heat pumps have now increased to supply temperature of 85⁰C 8

9 Standardized GEA Products: RedAstrum Complete package for cooling and heating: GEA Grasso M compressors H/L/M/N - 52 bar with capacity slide Min./max. speed 1000/4500 rpm Oil management with horizontal oil separator (5 ppm oil carry-over), oil heater, oil filter, oil cooler and oil return system Power panel incl. VSD and GEA Omni TM High pressure side / heat carrier / heat sink Heated through condenser, oil cooler, and subcooler optional 40 or 52 bar design pressure refrigerant system Max. inlet +75 C Outlet C Heating capacity appr ,300 kw 9

10 Standardized GEA Products: RedAstrum Model Heat carrier ( C) Sec. refrigerant inlet/outlet +40/+35 C Heating Cooling COP 2) (kw) (kw) heating Sec. refrigerant inlet/outlet +10/+5 C Heating Cooling COP 2) (kw) (kw) heating+cooling GEA RedAstrum inlet/outlet at 4500 rpm line at 4500 rpm line +40/ / / / / / / / ) Deviations possible acc. to individual project set-up 2) COP heating = heating capacity / electrical consumption at net; COP heating + cooling = combined heating and cooling capacity / electrical consumption at net 10

11 GEA application developments: Large district heating solutions 11

12 Swept volume in m³/h Screw compressors used for ammonia heat pumps GEA Grasso M (8 models) C D E G H L M N P R S T V W Y Z XA XB XC XD XE XF XG XH GEA Grasso LT (16 models) Models

13 World s largest ammonia heat pump city of Malmö, for E.ON 4 off XD compressors (Total 40 MW heating) Heat source: sewage water, 14 ⁰C to 8 ⁰C Shell and tube evaporator Heat sink: district heating water, 57 ⁰C to 66 ⁰C Heating COP >3.50 Plate and shell condenser 50,000 tons/y CO 2 saved 8% of Malmö heating network capacity (10,000 households) 13

14 World s largest ammonia heat pump city of Malmö, for E.ON 14

15 Next development step up to 90 C 5MW heat pump 2 x 2 stage heat pump To be installed in Copenhagen Test plant using both sewage water and sea water in plate evaporators Trial before a 100 MW heat pump investment in coming years 63 bar compressor University and Technology centre involved in testing Series and parallel heating and cooling 15

16 Large Heat pump references Project Date Country Temperature (Chilled water flow / hot water Heating capacity COP H flow) Fynsvaerket DK +30 C / +55 C 2,815 kw 7.20 Copenhagen Towers DK +10 C / +60 C 2,955 kw 4.51 Tetra Pak SWE +25 C / +70 C 1,430 kw 4.47 Sarpsborg NO +27 C / +80 C 2,000 kw 3.81 Nestlé Biessenhofen GER +30 C / +70 C 1,170 kw 4.88 Valldal Fjernvarme NO +1 C / +70 C 1,285 kw 2.60 Skagerak Energi NO -2 C / +70 C 1,225 kw 3.02 Bio Energi CZ +28 C / +80 C 4,090 kw 4.93 Unilever NL +17 C / +68 C 1,416 kw 5.32 Sogndal NO -2 C / +68 C 2,450 kw 3.03 Brista SWE +31 C / +65 C 7,250 kw 6.51 Sarpsborg II NO +20 C / +80 C 3,080 kw 3.05 Kalnes Energisentral NO -10 C / +56 C 1,250 kw 2.45 NTNU NO +4 C / +81 C 1,315 kw 2.64 Holmen NO +27 C / +71 C 2,450 kw 5.79 HP Oatly SWE +7 C / +78 C 560 kw 3.11 Kronoply GER +30 C / +83 C 4,500 kw 4.70 Vietnam VTN +6 C / +60 C 12,000 kw 4.62 Copenhagen Markets DK +6 C / +75 C 3,200 kw 3.05 EON Malmoe SWE +8 / +66 C 40,000 kw 3.50

17 Conclusion 1. Heat pumps only needs a limited electrical energy to raise the temperature of the waste heat to useful level. 2. Heat pumps will ensure future reduction in CO 2 emissions. 3. Using water based heating system instead of steam makes implementation of heat pumps cheaper and improve efficiency. 4. It is now possible to achieve 85⁰C water with a 52bar design heat pump 5. Large heat pumps in the building services sector can help communities reach their zero emission targets 17