1. Features of the GAHP technology
DGC Workshop GAHP March 28th
Luigi Tischer
Strategic Business Director Robur SpA

2. Summary Operating principle Renewable energy Technology highlights
Certified performance
Efficiency
Stability of performance
Efficiency on primary energy
No need for back-up
Base load operation
High flow temperatures
Environmental performance
Natural refrigerant
Quietness
Defrosting
Low electrical consumption

3. GAHP: operating principle

4. RENEWABLE ENERGY recovered through PRIMARY ENERGY4 4 4

5. GAHP technology Water-ammonia sealed circuit:
no tip-up, no drain, extremely simple maintenance;
Substantially a static system with only one moving part:
very high reliability;
Low electrical consumption:
2% of thermal output;
Exhaust flue gas water vapour condensation:
reduced energy losses in the exhaust gas;
Natural refrigerant:
no CFC, HCFC, HFC;

6. GAHP: certified performance
Technology with certified performance

7. GAHP efficiency 7

8. Performance stability over outdoor temperature8

9. Efficiency on primary energy

10. GAHP: back-up vs peak Gas absorption heat pumps
make the back-up system redundant.
EHP
Boiler
-15°C
-5°C
0°C
5°C
10°C
-10°C
GAHP 10

11. GAHP in base load operation
GAHP: back-up vs peak
GAHP in base load operation
160
140
130
120
110
Boiler
100
Heating Load [kW] 90 80
Boiler 70 60 50 40
GAHP 30 20 10
October
November
December
January
Febtuary
March
April
Month

12. GAHP: no need for back-up
Flow temperature 60°C

13. GAHP: a wide application range
GAHP-A: Air-water
Gas Absorption Heat Pump
Nominal efficiency up to 165%
by means of heat recovery
from external environment‏
Space heating up to 65°C
and indirect production of
Domestic Hot Water up to 70°C
Suitable for radiators, fan coils, floor heating, DHW preparation
Designed for applications in light commercial and collective residential

14. GAHP with annual performance of 1.3
GAHP: environmental performance
197 g CO2
per kWh
175 g CO2
per kWh
EHP
GAHP
48 kWh
losses
37% Generation Efficiency
Ca. 1 kWh losses
GAHP with annual performance of 1.3
76 kWh
Primary energy
28 kWh Electricity
76 kWh Gas
100 kWh
thermal output
Electric HP with SPF of 3,6
72 kWh from environment
25 kWh from environment

15. GAHP: Ecolabel ranking

16. Totally exempt from F-Gas current and future restrictions
GAHP: natural refrigerant
F-GAS EC842/06
Totally exempt from F-Gas current and future restrictions

17. GAHP: quietness 17

18. GAHP: Defrosting with no impact on comfort
The appliance can operate even when coil is covered with ice.
The defrosting cycle: - occurs not frequently
- is quick
- does not cut-off heating
RETURN TEMPERATURE
DELIVERY TEMPERATURE

19. GAHP: no impact on grids19

20. Thank you for your attention20