Comparison item

Electrical driven centrifugal chiller

(ECH)

Gas driven absorption chiller

(GCH)

· manufacturer

York, USA [32]

Broad, China [33]

· full load technical data

nominal cooling capacity, Q_cc

TR

1000

1000

compressor power, P_comp. @ Full Load

kW

600

N/A

solute pump power, P_pump

kW

N/A

15

natural gas flow rate, ${\text{V}}_{{}^{\text{o}}\text{N}\text{G}}$

m³/hr

N/A

275

exergetic efficiency, η_exergetic

%

40

13

coefficient of performance, COP @ Full Load

5.6

1.3

coefficient of performance, COP @ Part Load

5.8 - 7

1.0 - 1.2

refrigerant type

HFC-134a

Li-Br/Water

· chilled water side

chilled water supply temperature, T_CHWS

˚C

7

7

chilled water return temperature, T_CHWR

˚C

12

12

chilled water mass flow rate, m_chws

kg/s

150

150

evaporating temperature, T_evap

˚C

-10

5

· cooling water side

cooling water supply temperature, T_CWS

˚C

30

30

cooling water return temperature, T_CWR

˚C

35

35

cooling water mass flow rate, m_cwr

kg/s

200

300

condensing temperature, T_cond

˚C

45

80

· part load control

VSD

NGRV