MCAC-ATSM-201606 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)
94
13.2.4 Performance adjustment factors
The antifreeze must be required according to anyone condition as following:
1. The outlet water temperature is below 5
℃
;
2. The ambient temperature is below 0
℃
;
3. Don
’t start up the unit for a long time.
4. The power supply was cut off and needn
’t change the water in system.
Ethylene and Propylene Glycol Factors
A glycol solution is required when the unit with condition as mentioned. The use of glycol will reduce the
performance of the unit depending on concentration.
Ethylene Glycol
Quality of glycol
（
%
）
modification coefficient
Freezing
point
℃
Cooling capacity
modification
Power
modification
Water
resistance
Water flow
modification
0
1.000
1.000
1.000
1.000
0
10
0.984
0.998
1.118
1.019
-4.000
20
0.973
0.995
1.268
1.051
-9.000
30
0.965
0.992
1.482
1.092
-16.000
40
0.960
0.989
1.791
1.145
-23.000
50
0.950
0.983
2.100
1.200
-37.000
Propylene Glycol
Quality of glycol
（
%
）
Modification coefficient
Freezing
point
℃
Cooling capacity
modification
Power
modification
Water
resistance
Water flow
modification
0
1.000
1.000
1.000
1.000
0
10
0.976
0.996
1.071
1.000
-3.000
20
0.961
0.992
1.189
1.016
-7.000
30
0.948
0.988
1.380
1.034
-13.000
40
0.938
0.984
1.728
1.078
-22.000
50
0.925
0.975
2.150
1.125
-35.000
Units operating with glycol solutions are not included in the ARI Certification Program.
Altitude correction factors
Performance tables are based at sea level. Elevations other than sea level affect the performance of the unit.
The decreased air density will reduce condenser capacity and reduce the unit
’s performance. For
performance at elevations other than sea level refer to Table 3. Maximum allowable altitude is 1800meters.
Evaporator temperature drop factors
Performance tables are based on a 5
o
C temperature drop through the evaporator. Adjustment factors for
applications with temperature ranges from 3
℃
to 6
℃
in follow table. Temperature drops outside this range
can affect the control system
’s capability to maintain acceptable control and are not recommended.
Fouling factor
Fouling refers to the accumulation of unwanted material on solid surfaces, most often in an aquatic
environment. The fouling material can consist of either living organisms (biofouling) or a non-living
substance (inorganic or organic). Fouling is usually distinguished from other surface-growth phenomena in
that it occurs on a surface of a component, system or plant performing a defined and useful function, and
that the fouling process impedes or interferes with this function.
Other terms used in the literature to describe fouling include: deposit formation, encrustation, crudding,
deposition, scaling, scale formation, slagging, and sludge formation. The last six terms have a more narrow
meaning than fouling within the scope of the fouling science and technology, and they also have meanings
outside of this scope; therefore, they should be used with caution.
Summary of Contents for Aqua Tempo Super MC-SP25-RN1L
Page 27: ...Aqua Tempo Super Series air cooled scroll chiller unit 50Hz MCAC ATSM 201606 25 MC SS65 RN1L...
Page 28: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 26 MC SS80 RN1L...
Page 29: ...Aqua Tempo Super Series air cooled scroll chiller unit 50Hz MCAC ATSM 201606 27 MC SS130 RN1L...
Page 31: ...Aqua Tempo Super Series air cooled scroll chiller unit 50Hz MCAC ATSM 201606 29 MC SP25M RN1L...
Page 32: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 30 MC SP35 RN1L...
Page 33: ...Aqua Tempo Super Series air cooled scroll chiller unit 50Hz MCAC ATSM 201606 31 MC SP35M RN1L...
Page 34: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 32 MC SP65 RN1L...
Page 38: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 36 MC SP65 RN1L...
Page 60: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 58 MC SS65 RN1L...
Page 62: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 60 MC SS65 RN1L...
Page 64: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 62 MC SS80 RN1L...
Page 70: ...MCAC ATSM 201606 Aqua Tempo Super Series air cooled scroll chiller unit 50Hz 68 MC SP25M RN1L...
