York YK145.00-EG4 User Manual download pdf (Page 19)

Johnson Controls 19

Water Source Heat Pumps Technical Guide: YK145.00-EG4 (309)

CORRECTION FACTORS

ANTIFREEZE CORRECTION TABLE

Antifreeze Concentration

5% 10% 15% 20% 25% 30% 40%

Ethylene Glycol

Cooling 0.998 0.995 0.993 0.991 0.989 0.987 0.984

Heating 0.995 0.990 0.985 0.980 0.974 0.969 0.964

PD 1.040 1.055 1.080 1.105 1.135 1.165 1.210

Propylene Glycol

Cooling 0.995 0.992 0.987 0.983 0.979 0.975 0.970

Heating 0.989 0.982 0.975 0.967 0.958 0.951 0.943

PD 1.035 1.055 1.100 1.145 1.200 1.260 1.320

Methanol

Cooling 0.999 0.995 0.990 0.986 0.982 0.980 0.978

Heating 0.989 0.985 0.979 0.971 0.963 0.954 0.946

PD 1.050 1.072 1.094 1.116 1.140 1.165 1.196

AIRFLOW CORRECTION TABLE

Airflow %

Cooling Heating

TC SC Power THR HC Power HE

70 0.931 0.847 0.964 0.946 0.942 1.075 0.940

75 0.941 0.872 0.969 0.956 0.953 1.059 0.949

80 0.950 0.896 0.979 0.961 0.960 1.039 0.958

85 0.966 0.923 0.983 0.971 0.970 1.023 0.969

90 0.977 0.948 0.989 0.981 0.979 1.015 0.979

95 0.989 0.974 0.995 0.990 0.989 1.007 0.989

100 1.000 1.000 1.000 1.000 1.000 1.000 1.000

105 1.008 1.025 1.006 1.010 1.009 0.994 1.010

110 1.018 1.048 1.013 1.017 1.019 0.992 1.018

115 1.026 1.070 1.019 1.026 1.029 0.991 1.028

COOLING PERFORMANCE CORRECTION TABLE

Entering Air

WB (F)

Total Clg

Capacity

Entering Air DB (F) - Sensible Capacity

Heat

Rejection

70 75 80.6 85 90 95

60 0.845 0.86 1.1 1.305 S S S 0.904

65 0.948 0.628 0.865 1.082 1.312 S S 0.979

66.2 1 0.539 0.777 1 1.22 1.475 S 1

70 1.061 0.631 0.855 1.081 1.331 1.543 1.039

75 1.162 0.618 0.848 1.09 1.296 1.107

S = Sensible cooling is equal to Total Cooling

HEATING PERFORMANCE CORRECTION TABLE

EAT DB (F) Heating Capacity Power Heat Extraction

45 1.101 0.785 1.162

50 1.080 0.832 1.125

55 1.059 0.878 1.079

60 1.039 0.926 1.064

65 1.019 0.960 1.023

68 1.000 1.000 1.000

70 0.990 1.028 0.983

75 0.974 1.064 0.957

80 0.951 1.111 0.918

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