336
Calculation Method The CO 2 reduction amount was calculated as follows:
CO reduction kg CO
BL
PJ
BL
PJ
2
2
(
)=
=
´
(
)
´
(
)
EM
EM
ELC
CEF
ELC CEF
–
–
where
ELC
E LC COP
COP
ELC
OT
ELP
ELP
BL
PJ
SSHP
A SHP
PJ
SSHP
SSHP
H SWP
=
´
(
)
=
´
+
S
S
( (
)
é ë
ù û
and
EM BL : baseline CO 2 emissions (kg CO 2 )
EM PJ : project CO 2 emissions (kg CO 2 )
Table 12.5 Heat pump project outline
Project
Update from an air-source heat pump to a seawater-source heat
pump
Project implementer
Yokohama Hakkeijima Inc.
Calculation period of CO 2
emission reduction
1 April 2013–31 March 2014
Installation of seawatersource heat pump
Central monitoring room (24 h a day, 365 days a year) in the Aqua
Museum at Yokohama Hakkeijima Sea Paradise in March 2013
Table 12.6 Target emission activities for CO 2 reduction due to upgrading to a seawater-source
heat pump
Emissions activities
Greenhouse
gas
Calculation target of this
project?
Project
emissions
Power use by seawater-source heat
pump
CO 2
Yes
Power usage
Power use by heat source water
pump
CO 2
Yes
Power usage
Power use by lifting pump
CO 2
No
Use seawater pumped for
other purpose
Leakage of refrigerant from
seawater-source heat pump
CFC
substitutes
No
No leakage accident
Disposal of air-source heat pump
using refrigerant
CFC
substitutes
No
Cfc recovery at the time of
disposal
Baseline
emissions
Power use by air-source heat pump CO 2
Yes
Power usage
Leakage of refrigerant from
air-source heat pump
CFC
substitutes
No
No leakage accident
CFC chlorofluorocarbon
M. Nobutoki et al.