GEA open type heat pumps

Industrial add-on heat pumps with reciprocating compressors

GEA open type heat pumps

GEA open type heat pump

The GEA open type heat pump is for heat recovery. It is directly connected to an ammonia refrigeration system that’s used as the heat source. By recovering the chiller waste heat, GEA open type heat pumps provide heating supply temperatures of up to +95 °C.

GEA open type heat pumps are optimized for recovering heat from ammonia refrigeration plants. The hot gas from the refrigeration plant is cooled in an open gas cooler vessel, minimizing the superheat and pressure drop and so establishing perfect conditions for the efficient booster heat pump operation.

The heat pump series is equipped with GEA Grasso 5 HP (50 bar), GEA Grasso V HP (39 bar) or GEA Grasso V XHP (63 bar) reciprocating compressors in either a single or duplex arrangement. It can be selected in different configurations with desuperheater and/or subcooler for optimized efficiency and reduced energy costs depending on the temperature difference of the heat carrier circuit. Adding a desuperheater allows supply temperatures up to +95 °C with V XHP compressor, +82 °C with 5 HP compressor and +70 °C with the V HP compressor technology.

GEA open type heat pumps are commonly added to ammonia refrigeration plants condensing between +20 °C and +40 °C. The heat pump series is supplied with a highly efficient oil separator which minimizes the oil carry-over to less than 5 parts per Million (ppm) and helps eliminate the mixing of oil between the refrigeration plant and the heat pump.

Highlights and technical features

Heat recovery from ammonia refrigeration plants
Heating capacity 300 kW – 3,500 kW *)
Hot water supply temperature up to +95 °C
Pressure difference (of compressors) up to 30 bar
Natural refrigerant ammonia (R717)
Maximum design pressure 50 bar(a)
Single or duplex reciprocating compressor arrangement
Fully welded plate and shell condenser
Heat exchangers are available with AISI 316L, SMO 254 or titanium plate material
Different plate materials available (acc. media requirements)
Subcooler and desuperheater options
Separation vessel (no intermediate heat exchanger to refrigeration plant)
Highest efficiencies, also at part load
VSD drive

*) Heat carrier +35/+65 °C, LP refrigeration plant condensing +35 °C

Learn more with GEA RT Select – our product selection and configuration tool.

GEA open type heat pumps

Add-on version (cascade evaporator charged wiht ammonia from low-pressure chiller)
Type	Heat carrier (°C)	LP Conden- sing (°C) ¹⁾	Heating capacity (kW)	COP ²⁾
	inlet/outlet		at 1500 min^-1	line
35 HP	+35/+65 +70/+80	35.0 35.0	320 266	8.38 4.78
45 HP	+35/+65 +70/+80	35.0 35.0	426 355	8.33 4.91
55 HP	+35/+65 +70/+80	35.0 35.0	533 444	8.45 4.87
65 HP	+35/+65 +70/+80	35.0 35.0	639 531	5.78 4.29
2x 45 HP	+35/+65 +70/+80	35.0 35.0	828 709	8.19 4.90
2x 55 HP	+35/+65 +70/+80	35.0 35.0	1036 887	8.19 4.89
2x 65 HP	+35/+65 +70/+80	35.0 35.0	1242 1063	8.22 4.93
V300 HP	+35/+65	35.0	879	8.51
V450 HP	+35/+65	35.0	1317	8.53
V600 HP	+35/+65	35.0	1756	8.59
2x V450 HP	+35/+65	35.0	2634	8.56
2x V600 HP	+35/+65	35.0	3511	8.59

1) Condensing temperature of the low-pressure Ammonia refrigeration system
2) COP (coefficient of performance) = heating capacity / electrical consumption at net

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