Robur · Absorption chillers

Robur GA ACF special versions

Gas-fired absorption chillers

Cooling capacity: 17.7 – 88.5 kW
Efficiency: GUE 71%
Energy: Natural gas or LPG

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Technical data

Key data

Cooling capacity: 17.7 – 88.5 kW
Rating conditions: A35W7
Energy: Natural gas or LPG
Output temperature: Chilled water down to -10 ºC
Refrigerant: R717 (ammonia)
Efficiency: GUE 71%

Main advantages

Up to 86 % lower electricity consumption
Natural refrigerant, no fluorinated gases
Independent, modular operation
Wide range of applications
Suited to demanding operating conditions

Models

Robur GA ACF special versions models

Technical data from the manufacturer's data sheet.

GA ACF special versions
Model	Unit	Standard	Low-noise	Standard	Low-noise	Standard	Low-noise
GENERAL DATA
Version / application		Special version: year-round operation, minimum outdoor temperature −12 °C (processes, plant rooms)	Special version: year-round operation, minimum outdoor temperature −12 °C (processes, plant rooms)	Special version: tropical climates, outdoor temperature up to 50 °C	Special version: tropical climates, outdoor temperature up to 50 °C	Special version: sub-zero water production, down to −10 °C (refrigeration, processes)	Special version: sub-zero water production, down to −10 °C (refrigeration, processes)
Refrigerant (natural, ammonia)
Exempt from the F-Gas regulation
Hydrogen allowed in gas blend (H2NG Hydrogen Ready)	%
Electricity saving compared with an electric chiller	%
COOLING MODE
Cooling capacity (outdoor 35°C / water outlet 7°C, A35W7)	kW	17.7	17.7	17.1	17.1
Cooling capacity (outdoor 35°C / water outlet −5°C, A35W-5)	kW					13.3	13.3
Heat input	kW	25
GUE (gas utilisation efficiency) in cooling	%	0.708	0.708	0.684	0.684	0.532	0.532
Minimum chilled water outlet temperature	°C	3	3	5	5	-10	-10
Maximum chilled water inlet temperature	°C	45
Minimum chilled water inlet temperature	°C	8	8	8	8	-7	-7
Nominal chilled water flow	l/h	2,770	2,770	2,675	2,675	2,600	2,600
Internal pressure drop at nominal flow	bar	0.29	0.29	0.29	0.29	0.42	0.42
Maximum outdoor temperature	°C	45	45	50	50	45	45
Minimum outdoor temperature	°C	-12	-12	0	0	0	0
ELECTRICAL DATA
Supply voltage	V	230
Supply type		Single-phase
Frequency	Hz	50
Electrical power input	kW	0.82	0.87	0.82	0.87	0.82	0.87
Protection rating	IP	X5D
INSTALLATION DATA
Natural gas G20 consumption (nominal)	m³/h	2.68
LPG G30/G31 consumption (nominal)	kg/h	1.97
Sound pressure level Lp at 5 m (max.)	dB(A)	57.6	53	57.6	53	57.6	53
Maximum water circuit working pressure	bar	4
Water connection: type		Female (F)
Water connection: thread	in	1 1/4
Gas connection: type		Female (F)
Gas connection: thread	in	3/4
Dimensions: width	mm	850
Dimensions: height	mm	1,446	1,516	1,446	1,516	1,446	1,516
Dimensions: depth	mm	1,256
Operating weight	kg	360