Factors which influence the choice of
alternatives
Workshop on HFC management:
Session 4: Challenges and opportunities in addressing high-GWP
HFCs in the foam sector
Bangkok
21st April
Igor C. Croiset
GIZ Proklima
Senior consultant
Page 1
Foam performance sequence of requirements
•
Foam performance depends in the following order on:
1. Machinery
2. Operator knowledge
3. Product and design
4. Chemicals
The gap between theory and practical application can be substantial
therefore selection needs to comprehend the above.
Page 2
Insulation requirements are determined according to the
design requirements, foam performance and energy
efficiency standards.
•
E.g take a cold room 6x4 m
which has the purpose of
preserving food
•
The kind of food stored,
temperature conditions and
logistics together with the
insulation properties determine
the cooling power and overall
energy efficiency
Status quo
Thickness insulation walls (mm)
Thickness insulation roof (mm)
Insulation material
Thermal conductivity (mW/m.K)
Size cold room (LxWxH m)
Cold room real temperature °C
Stored food A
Stored food B
Stored food A required temp. °C
Stored food B required temp. °C
Mass of stored food A
Mass of stored food B
Cold room real temperature °C
Ambient temperature °C
Daily stock renewal
New stock temperature °C
50
75
PU
22
6x4x2.5
-10.00
Fish
Beer
-8
0
4788
470.4
-10
25
10%
10.00
Page 3
Cold room – Impact design and good practices parameters
10.0%
7.2%
6.1%
4.9%
Parameters influence
5.0%
3.8%
3.0%
0.0%
-2.4%
-5.0%
-7.2%
-10.0%
-15.0%
Series1
-13.4%
Increase of
insulation
100%
Improvement
insulation
performance
2 mW
Outside
under the sun
placed room
-13.4%
-2.4%
3.0%
Increase of
ambient
temperature
to 32°C due
to outside
placement
7.2%
Increase of
Lights left on
Stock
Opening
food
instead of
replenishmen closing doors
temperature
switching off
t cooled down 5x times more
by 2°C due to
everytime the
to 0°C
than usual
electrical
room is left
shortage
-7.2%
6.1%
4.9%
3.8%
The best insulation provides substantial improvement but for highest
efficiency good practices need to go along!
Page 4
Extract main applications
Sector
Application
Sandwich panels
Construction/
Industrial
Boards (PU,XPS,EPS)
Spray foaming
Drivers
Constructive
soundness
Cheap, easy
application
Easy and cheap
Alternatives
HC's, H2O
HC's
H2O
Transport
Refrigerated trucks,
containers
ATP-energy
HC's, (HFO's)
Commercial refr.
Cold rooms,
supermarket utilities
Energy, consumer
appeal
HC's, H2O
Home appliance
Energy
HC's, (HFO's)
Domestic refr.
Page 5
Selection?
•
The selection of a foam system is dependant on the application
together with the manufacturing method
•
Secondly, whether you need additional insulation
performance through high performance blowing agents and if
it is worthwhile needs to be assessed?
•
Increase of foam thickness to improve energy efficiency is
a viable solution where possible?
Insulation is a must, 50% of energy consumption is from private
housing for heating/ cooling!
Page 6
Thank you for your attention!
For further info feel free to contact:
[email protected]
[email protected]
Page 7