Adjustment Procedure Of Inhibiter For Lithium Bromide Solution; General; Standard Of Lithium Bromide Solution; Sampling Procedure Of Lithium Bromide Solution - Hyundai HDFN-80-1400 Operation Instructions Manual

3. Adjustment Procedure of Inhibitor for Lithium Bromide Solution

3.1 General

This is to describe the procedure of analysis and adjustment of lithium bromide solution in the chiller-
heater to be installed at site.

3.2 Standard of Lithium Bromide Solution

Table 3
Concentration
of LiBr
Li CrO (wt %)
2 4
LiOH (wt %)
PH For reference
Note: (1) All above figures are conversion values at 55 % (wt%) concentration of LiBr.
(2) Above PH value is just for guidance and it is not a standard value.

3.3 Sampling Procedure of Lithium Bromide Solution

(1) Sampling Procedure of Lithium Bromide Solution
1) Lithium bromide solution must be sampled after continuous operation of the chiller-heater for 5
days or more. Besides, it must be sampled after continuous operation of the chiller-heater for
5 hours or more on the sampling day.
2) At dilution operation, discharge refrigerant from the damp valve and collect one liter lithium
bromide solution from the discharge valve of the solution pump prior to the completion of dilute
operation.
3) As a rule, no refrigerant is collected as a sample except when refrigerant look colored in yellow.
4) Be sure to sample approx. 500 cc amount of lithium bromide solution after blowing at sampling.
5) Be sure to use a clean container for sampling.
(2) Sampling in off-season
1) For chiller-heater provided with a generator pump, operate the pump for 20 minutes with the
chilled water pump and cooling water pump stopped, and with the fuel control valve closed.
And then do the sampling work in the way mentioned in item (1).
2) When all amount of solution is discharged, sample one liter of the solution.
3.4 Description on Container the Sampling
Customer Name of the Chiller-heater
Service Agent
Model Name
Machine No.
Date of Trial Operation
Date of Sampling
Date of Previous Chemical-charge to LiBr Solution
Remarks
Threshold Valve for Required
New LiBr
For Steam
Driven type
55 %
0.26 ~ 0.30 Less than 0.13
0.0022
~0.0069
9 ~ 10
Adjustment
For Direct
Fired Type
On a 55 % basis
Less than 0.20
Beyond the range
.0022 ~ 0.0069
68
Target Valve for Re-adjustment
For Steam
Driven Type
0.20 ± 0.01
0.0045
± 0.0005
9 ~ 10
For Direct
Fired Type
0.27 ± 0.01
0.0045
± 0.0005