Carrier Sanyo 16TJ, Operation And Maintenance Instructions

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11
2.3 - Chiller flowchart and component function
description
Evaporator
The refrigerant is dispersed on the heat transfer tubes of the
evaporator. Chilled water running through the heat transfer
tubes of evaporator is cooled by the latent heat of vaporized
refrigerant.
Absorber
The concentrated solution is dispersed on the heat transfer
tubes of absorber. The refrigerant vapour from the evaporator
is absorbed on the heat transfer tubes of the absorber by the
concentrated solution. Cooling water running through the heat
transfer tubes of the absorber is heated by the absorption heat.
Heat exchanger
After leaving the absorber section the diluted solution passes
through the heat exchanger, where it is heated by the concen-
trated solution. The concentrated solution is cooled by the
diluted solution. Due to the lower temperature this cooling
process of the concentrated solution allows for greater
absorbing power.
Generator
The steam passes through the heat transfer tubes of the
generator. The diluted solution in the generator is heated by the
steam. It releases the refrigerant vapour and is concentrated to
become a concentrated solution.
Fig. 7 - Flow diagram
V2
V3
SV2
SV1
V1
DT10
DT6
69CH DT1
DT5
DT2
PCH 69PR
DT12
DT13
D7
DT7
SV6
D1
SV4
SV7
63GH
DT3
SV3
DT11
23CH
D1: Diluted solution main damper 1: Purge pump 12: Z-valve (rupture disk isolation valve)
D7: Steam drain damper 2: B-valve (manual purge valve) 13: Condenser
SV1: Charge/removal service valve N
2
gas 3: Chilled-water outlet 14: Generator
SV2: Purge unit service valve 4: Chilled-water inlet 15: Evaporator
SV3: Refrigerant service valve 5: Purge unit 16: Absorber
SV4: Diluted solution service valve 6: Cooling water outlet 17: Cooling water inlet
SV6: Concentrated solution service valve 7: Purge tank 18: Heat exchanger
SV7: Generator pressure gauge service valve 8: Refrigerant pump 19: Steam control valve
V1: Manual purge valve 9: Refrigerant blow-down valve 20: Steam inlet
V2: Manual purge valve 10: Absorption pump 21: Steam drain reclaimer
V3: Manual purge valve 11: Rupture disk 22: Steam drain outlet
Sensor
Service valve
Damper
Check valve
Valve
Legend
1
5
8
4
3
2
6
7
9
10
12
11
14
13
15
16
17
18
22
20
19
21
Condenser
The refrigerant vapour from the generator is condensed on the
heat transfer tubes of the condenser. Cooling water from the
absorber is heated by condensation heat.
Purge unit
The purge unit collects the non-condensable gas in the chiller
and stores it in the purge tank.
Sensors
SYMBOL NAME
DT1 Chilled-water leaving temperature
DT2 Cooling water leaving temperature
DT3 Generator temperature
DT5 Condenser temperature
DT6 Chilled-water entering temperature
DT7 Cooling water entering temperature
DT8 Not used
DT9 Not used
DT10 Diluted solution temperature at absorber outlet
DT11 Evaporator refrigerant temperature
DT12 Cooling water mid-temperature
DT13 Steam drain temperature
23CH Temperature controller
69CH Chilled water flow switch
PCH Palladium cell heater
69PR Purge tank pressure