ROTEX Gas-Hybrid-Heat Pump

© ROTEX Heating Systems GmbH Product Management

Heating market Europe

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New built Building structure

Emitter modernization Keep emitters

Oil replacement Gas replacement

1.000.000,00

Heating market Europe

New build Building structure

Emitter modernization Keep emitters

Oil replacement Gas replacement

1.000.000 700.000 800.000 5.500.000 DAKIN/ROTEX HPSU LT ROTEX/DAIKIN HPSU LT ROTEX /DAIKIN HPSU HT ??? 150.000 / 6 Years 30.000 / 3 Years Leaving temperature 25 - 55°C Lt. 25 - 80°C Lt. 25 - 80°C

© ROTEX Heating Systems GmbH Product Management

How to modernize?

 Keep heat distribution system

 Integrate a new distribution system (UFH)

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Keeping the heat distribution system

• Leaving water temperatures > 60°C • Relatively high performance > 15 kW

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 Combination of heat pump and high efficient gas condensing boiler

The Solution: ROTEX HPU hybrid Gas-Hybrid-Heat Pump

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HP Outdoor unit 5 / 8kW Gas condensing boiler Heating 27kW / DHW 33kW

Room heating Domestic hot water preparation

 Combination of 2 energy sources

Concept of the Gas-Hybrid-Heat Pump

CW inlet Pump HP PHEX DHW 3-way valve Gas condensing boiler Room heating return

Room heating flow

refrigerant Gas

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Concept of the Gas-Hybrid-Heat Pump

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1 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

4 3 2 1

Concept of the Gas-Hybrid-Heat Pump

1 Heat Pump monovalent

2 Heat Pump + Gas condensing boiler (short bivalent parallel operation)

3 Heat Pump + Gas condensing boiler, bivalent parallel (with larger delta T via flow control)

4 Gas condensing boiler alone

COP 5,04

COP A7W35

B

Bivalent point

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Heat pump only mode

Concept of the Gas-Hybrid-Heat Pump

8/12/2013 12 Gas COP 3,05 COP A2W40 refrigerant CW inlet DHW 1

Optimization thanks to operation of gas condensing boiler (target to reach desired setpoint)

Concept of the Gas-Hybrid-Heat Pump

Gas

From gas condensing boiler only short operation

COP 3,05 COP A2W40 refrigerant CW inlet DHW B 2

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Concept of the Gas-Hybrid-Heat Pump

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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.

 Real hybrid function: thanks to volume flow control still in bivalent parallel operation mode

Extension of bivalent parallel operation up until the most

“ecological bivalent point” (depending on electricity and gas price)

Concept of the Gas-Hybrid-Heat Pump

Gas condensing boiler in parallel operation Gas refrigerant CW inlet DHW 3

© ROTEX Heating Systems GmbH Product Management

Concept of the Gas-Hybrid-Heat Pump

8/12/2013 16 Pump PHEX 60°C 50°C refrigerant

Volume flow control

PHEX Gas

60°C

40°C

refrigerant 3 _{How does it work?}

Concept of the Gas-Hybrid-Heat Pump

T_break-even defined by:  Partload COP

 Price ratio

Prices can be entered by enduser!

 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.

© ROTEX Heating Systems GmbH Product Management

Gas condensing boiler in alternative operation until T-design temperature

Concept of the Gas-Hybrid-Heat Pump

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Gas CW inlet

DHW 4

 Saving of running costs compared to the usage of a classical gas condensing boiler

Benefit for the enduser

-15 Gas condensing boiler alone HP monovalent 0 15 Ta (°C) k W h/ a -15 Hybrid operation + 10% more efficient COP 5,04

Most efficient operation at each and every ambient temperature ROTEX Hybrid Logic maximises the HP share

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Two possibilites of DHW operation

1.

Instantaneous DHW production

30% more efficient domestic hot water production compared to a classical gas condensing boiler

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10°C

60°C

DHW

DHW mode space heating

Two possibilites of DHW operation

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Basic build-up

 All connections at the bottom

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Basic build-up

 Hydrobox is located behind the gas condensing boiler  Hydraulic components:

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Control via a controller with clear text display

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Control via a controller with clear text display

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Capacity sizes

modes Combination Material name Capacity

5kW Heating

only

Außengerät _RVLQ05CAV3 5kW

Hydrobox _RHYHBH05AAV3 5kW

Combi Boiler RHYKOMB33AA 27kW/33kW 8kW Heating

only

Außengerät _RVLQ08CAV3 8kW

Hydrobox _RHYHBH08AAV3 8kW

Combi Boiler RHYKOMB33AA 27kW/33kW 8kW Heating/

Cooling

Außengerät _RVLQ08CAV3 8kW

Hydrobox _RHYHBX08AAV3 8kW

Benefit for your customers

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!

Verkauf V. Weinmann © ROTEX Heating Systems GmbH

ROTEX HPU hybrid Gas-Hybrid Heat Pump

Thanks for your attention!