Heat and cold generation Meyer Hospital Florence Meeting, 8-9 May 2003.
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Heat and cold generation Meyer Hospital Florence Meeting, 8-9 May 2003
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Transcript of Heat and cold generation Meyer Hospital Florence Meeting, 8-9 May 2003.
Heat and cold generation
Meyer HospitalFlorence Meeting, 8-9 May 2003
Requirements
An hospital has a great need of thermic energy all year round
Purpose
Provide the needed hot and cold water with the lower waste of energy
Phisycal principles
The refrigeration cycle COP
COP
Condensation pressurei.e. temperature of cooling fluid
CE
20 25 30 35
3.803.683.25
2.85
the hotter temperature, the lower COP→ split the chilling units
Phisycal principles
Energy transfer
C1 CE
20 25 30 35
3.803.683.25
2.85
recovered cold
primary effect
Phisycal principles
The heat pump
CEE
production Heat Pump ≥ production condensation boiler
production Heat Pump = electricproduction · COP = 0.3 · COP ≥ 1.05
production condensation
energy / primary energy used
Condensation pressurei.e. temperature of heating fluid
production Heat Pump
1.05
C1 CE
Configuration
HP1 CE
HP2 CE
boilers Boiler
heat pump
heat pump
heat pumpthis device can be
considered as a heat transfer
this group produces cold water during the summer and hot water
during mid season
the boilers group produces hot water
during winter
this group produces cold water during the
summer chiller
E
E
C2 CEE
Summertime
hot watergeneral
distributionchilled watergeneral
distribution outdoor
off Boiler
HP1 CE
HP2 CE
E
E
C2 CEE
C1 CE
Winter season
hot watergeneral
distributionchilled watergeneral
distribution
off
off
offBoiler
HP1 CE
HP2 CE
E
E
C2 CEE
C1 CE
Mid season
hot watergeneral
distributionchilled watergeneral
distribution outdoor
off Boiler
HP1 CE
HP2 CE
E
E
C2 CEE
C1 CE
off
