Model Selection Curves

Model Selection Curves ​

Chilled/cooling water temp., cooling capacity, COP.

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BZ

Cooling capacity %Chilled water temp. °C

The figure in blue is COP. In calculation, 3 COP values are added up and then divided by 3. e.g.

1. Cooling capacity is 100%, cooling water temp. is 28°C, then chilled water temp. is 6.2°C, COP is 1.419; i.e. (1.42 + 1.44 + 1.419) / 3 = 1.419.

2. Chilled water temp. is 10°C, cooling water temp. is 30°C, then cooling capacity is 116%, COP = 1.435.

3. Cooling capacity is 90%, chilled water is 6°C , then cooling water temp. is 30°C, COP = 1.413.

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BH

Chilled water temp. °CHeat source water temp. °CCooling capacity %
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BS

Cooling capacity %Chilled water temp. °CSteam pressure MPa(Parenthesis for 0.6MPa)

The figure in blue is COP. In calculation, 4 COP values are added up and then divided by 4. e.g.

1. Cooling capacity is 90%, steam pressure 0.8 MPa, chilled water temp. is 6°C, then cooling water temp. is 30.5°C, COP = 1.488; (1.505 + 1.5 + 1.45 +1.498) / 4 = 1.488.

2. Steam pressure 0.7 MPa, chilled water temp. is 8°C, cooling water temp. is 28°C, then cooling capacity is 106%, COP = 1.496.

3. Cooling capacity is 90%, steam pressure 0.5 MPa, cooling water temp. is 30°C, then chilled water temp. is 7°C, COP is 1.451.

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BE

Cooling capacity %Chilled water temp. °CExhaust temp. °C
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BDH

Cooling capacity %Chilled water temp. °CHeat source water temp. °C
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BDS

Cooling capacity %Cooling water temp. °C

The figure in blue is COP (BH, BE, BDH, BDE, BDS).

Calculation is the same as BZ & BS models.