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Heat and cold generation. Meyer Hospital Florence Meeting, 8-9 May 2003. Requirements. Purpose. An hospital has a great need of thermic energy all year round. Provide the needed hot and cold water with the lower waste of energy. Phisycal principles. COP. E. C. 3.80. 3.68.

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Heat and cold generation

Heat and cold generation

Meyer Hospital

Florence Meeting, 8-9 May 2003


Requirements

Requirements

Purpose

An hospital has a great need of thermic energy all year round

Provide the needed hot and cold water with the lower waste of energy


Phisycal principles

Phisycal principles

COP

E

C

3.80

3.68

The refrigeration cycle COP

3.25

2.85

20

25

30

35

Condensation pressure

i.e. temperature of cooling fluid

the hotter temperature, the lower COP

→ split the chilling units


Phisycal principles1

Phisycal principles

C1

recovered cold

primary effect

E

C

Energy transfer

3.80

3.68

3.25

2.85

20

25

30

35


Phisycal principles2

E

Phisycal principles

energy / primary energy used

h production Heat Pump

E

C

1.05

h production condensation

The heat pump

Condensation pressure

i.e. temperature of heating fluid

h production Heat Pump≥ h production condensation boiler

h production Heat Pump = h electricproduction· COP = 0.3 · COP ≥ 1.05


Configuration

E

E

E

C1

this device can be considered as a heat transfer

Configuration

heat pump

E

C

this group produces cold water during the summer and hot water during mid season

HP1

heat pump

E

C

the boilers group produces hot water during winter

HP2

E

C

heat pump

this group produces cold water during the summer

Boiler

C2

boilers

chiller

E

C


Summertime

E

E

E

C1

Summertime

E

C

hot water

general distribution

chilled water

general distribution

outdoor

HP1

E

C

HP2

E

C

Boiler

C2

off

E

C


Winter season

E

E

E

C1

Winter season

E

C

hot water

general distribution

chilled water

general distribution

HP1

off

E

C

HP2

E

C

off

Boiler

C2

off

E

C


Mid season

E

E

E

C1

Mid season

E

C

hot water

general distribution

chilled water

general distribution

outdoor

HP1

E

C

HP2

E

C

Boiler

C2

off

off

E

C


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