ROTEX Gas-Hybrid-Heat Pump

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1 ROTEX Gas-Hybrid-Heat Pump

2 Heating market Europe Market potential New built Emitter modernization Building structure Keep emitters Oil replacement Gas replacement , , , ,00 2

3 Heating market Europe DAIKIN / ROTEX Portfolio New build Emitter modernization Building structure Keep emitters Oil replacement Gas replacement DAKIN/ROTEX HPSU LT ROTEX/DAIKIN HPSU LT ROTEX /DAIKIN HPSU HT??? / 6 Years / 3 Years Leaving temperature C Lt C Lt C 3

4 How to modernize? Keep heat distribution system Integrate a new distribution system (UFH) 6

5 Keeping the heat distribution system Requirements for the heat generator: Leaving water temperatures > 60 C Relatively high performance > 15 kw 7

6 The Solution: ROTEX HPU hybrid Gas-Hybrid-Heat Pump Combination of heat pump and high efficient gas condensing boiler HP Outdoor unit 5 / 8kW Gas condensing boiler Heating 27kW / DHW 33kW Room heating Domestic hot water preparation 8

7 Concept of the Gas-Hybrid-Heat Pump Combination of 2 energy sources Gas condensing boiler Pump Room heating flow DHW Gas 3-way valve CW inlet HP PHEX Room heating return refrigerant 9 8/12/2013

8 Heating power output (kwh) Concept of the Gas-Hybrid-Heat Pump Optimization thanks to bivalent parallel & alternative operation Heat Pump monovalent 2 Heat Pump + Gas condensing boiler bivalent parallel 3 Heat Pump + Gas condensing boiler bivalent parallel (with larger delta T via flow control) 4 Gas condensing boiler alone Ambient temp. ( C) 10 8/12/2013

9 Heating power output (kwh) Concept of the Gas-Hybrid-Heat Pump Operating range 1 und COP 5,04 COP A7W35 1 Heat Pump monovalent 2 Heat Pump + Gas condensing boiler (short bivalent parallel operation) Heat Pump + Gas condensing boiler, bivalent parallel (with larger delta T via flow control) 4 Gas condensing boiler alone B Ambient temp. ( C) Bivalent point 11 8/12/2013

10 Concept of the Gas-Hybrid-Heat Pump 1 Heat pump only mode DHW Gas CW inlet COP 3,05 COP A2W40 refrigerant 12 8/12/2013

11 Concept of the Gas-Hybrid-Heat Pump 2 Optimization thanks to operation of gas condensing boiler (target to reach desired setpoint) B From gas condensing boiler only short operation DHW Gas CW inlet COP 3,05 COP A2W40 refrigerant 13 8/12/2013

12 Heizarbeit (kwh) Concept of the Gas-Hybrid-Heat Pump Real hybrid function: thanks to volume flow control still in bivalent parallel operation mode While other hybrid solutions will now have to switch completely to the second heating source, the ROTEX Hybrid keeps heatpump and gas boiler in operation Außentemp. ( C) 14

13 Concept of the Gas-Hybrid-Heat Pump 3 Extension of bivalent parallel operation up until the most ecological bivalent point (depending on electricity and gas price) Gas condensing boiler in parallel operation DHW Gas CW inlet refrigerant 15 8/12/2013

14 Concept of the Gas-Hybrid-Heat Pump 3 How does it work? Pump Volume flow control 60 C 60 C Gas PHEX 50 C PHEX 40 C refrigerant refrigerant 16 8/12/2013

15 T water ( C) Concept of the Gas-Hybrid-Heat Pump What is the economical bivalent point? COP_break-even defines the COP of the heat pump at which the running cost (or primary energy efficiency) of the heat pump and the running cost (or primary energy efficiency) of the gas boiler are equal. At temperatures below T_break-even it is more economical to just heat with gas Example: P_gas: P_elec: 0,070 /kwh 0,237 /kwh Prices can be entered by enduser! T_water COP (5kW) Price ratio Ta ( C) T_break-even defined by: Partload COP Price ratio 17 8/12/2013

16 Concept of the Gas-Hybrid-Heat Pump 4 Gas condensing boiler in alternative operation until T-design temperature DHW Gas CW inlet 18

17 kwh/a Benefit for the enduser Saving of running costs compared to the usage of a classical gas condensing boiler Gas condensing boiler alone -15 Hybrid operation + 10% more efficient 0 15 HP monovalent Ta ( C) COP 5,04 Most efficient operation at each and every ambient temperature ROTEX Hybrid Logic maximises the HP share 19

18 Two possibilites of DHW operation 1. Instantaneous DHW production 30% more efficient domestic hot water production compared to a classical gas condensing boiler 2 in 1 heat exchanger DHW mode space heating 60 C DHW 10 C 20

19 Two possibilites of DHW operation 2. Classical domestic hot water tank DHW always available 21 8/12/2013

20 Basic build-up All connections at the bottom 22 8/12/2013

21 Basic build-up Hydrobox is located behind the gas condensing boiler Hydraulic components: high efficiency pump, 3-way valve, dirt filter, expansion vessel 23

22 Control via a controller with clear text display Graphical display with backlight Error info On/OFF Home Menu/ return Enter Navigation 24

23 Control via a controller with clear text display Easy to understand and intuitive: 25

24 Capacity sizes Hybrid 5kW 8kW 8kW Operation modes Combination Material name Capacity Außengerät RVLQ05CAV3 5kW Heating Hydrobox only RHYHBH05AAV3 5kW Combi Boiler RHYKOMB33AA 27kW/33kW Heating only Heating/ Cooling Außengerät RVLQ08CAV3 8kW Hydrobox RHYHBH08AAV3 8kW Combi Boiler RHYKOMB33AA 27kW/33kW Außengerät RVLQ08CAV3 8kW Hydrobox RHYHBX08AAV3 8kW Combi Boiler RHYKOMB33AA 27kW/33kW 26

25 Benefit for your customers The installation work is confined to the technical room No need to change any emitters No changes in the connection closet of the house needed due to compact design. Usage of a heatpump even when high leaving water temperatures are needed Security in times of uncertain energy price development, only the cheapest source is used! 28

26 ROTEX HPU hybrid Gas-Hybrid Heat Pump 29 Verkauf V. Weinmann

27 Thanks for your attention!

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