6
VIP
®
Series -86°C Ultra-Low Freezers
www.panasonic.com/biomedical
VIP
®
Series -86°C Freezer Energy Efficient Cascade Cooling System
Interstage Heat Exchanger.
To increase
overall system efficiency heat energy is
transferred to the high stage circuit.
Low Stage Compressor.
The compressor
pumps refrigerant through the low stage circuit.
Low Stage Oil Heat Exchanger.
Panasonic
exclusive high stage refrigerant passes through
the low-stage oil sump to cool lubricating oil
resulting in high-stage refrigerant being used
to increase the durability of the low stage
compressor.
Low Stage Capillary Tube.
Liquid refrigerant under
pressure is passed through the capillary tube where it
flash evaporates in the low stage evaporator to absorb
energy (heat) from the product stored in the freezer.
Low Stage Refrigerant.
Commonly
available worldwide, R508.
Freezer Cabinet with Evaporator.
The evaporator coil is strategically wrapped
around to provide optimum temperature
uniformity within the composite wall of
vacuum insulation panels and conventional
foamed-in-place urethane insulation.
Low Stage Heat Exchanger.
Heat is
efficiently transferred from the low stage to
the high stage.
Air Cooled Pre-Condenser.
Removes energy
(heat) from the high stage refrigerant enroute to
the low stage compressor.
Air Cooled Pre-Condenser.
Removes
energy (heat) from the high stage refrigerant
enroute to the high stage oil reservoir.
Main Condenser and Motor/Fan
Assembly.
Panasonic’s exclusive triple
pass forced air condenser increases
overall system efficiency by providing
maximum surface area for heat retection
Instrumentation (Not Shown).
Temperature and pressure sensors throughout the
high and low stage circuits transmit information to the Panasonic ‘Status Alert’ central
controller for operation, monitoring, interpretation and component protection.
High Stage Capillary Tube.
Liquid
refrigerant under pressure is passed
through the capillary tube where it
flash evaporates in the interstage heat
exchanger to absorb energy (heat) from
the low stage refrigerant circuit.
High Stage Refrigerant.
Commonly
available worldwide. Selected for optimum
cooling performance in compliance with
international environmental protection laws.
High Stage Compressor.
The com-
pressor pumps refrigerant through
the high stage circuit.
High Stage Oil Heat Exchanger.
Panasonic exclusive
high stage refrigerant passes through the high stage oil
to cool lubricating oil enroute to the low stage compressor
through the air-cooled pre-condenser. Thereby increasing
the reliability of the high stage compressor.
One of the most important concepts in designing a superior energy saving ultra-low freezer is how efficiently heat is exchanged between the
high and low stage circuits. By providing optimum heat exchange pathways in the design, it not only increases efficiency of the system, leading
to greater energy savings, but it will also have an effect of reducing stress on the compressors, leading to greater overall system reliability.
Panasonic’s new cap tube heat exchanger is but the latest step in increasing the available heat exchange areas in the system. This patent
pending innovation drastically increases the efficiency of the entire system. The end result is less energy consumption, while improving the
overall efficiency of the freezer.
NEW Capillary Tube (Patent Pending).
Low stage capillary tube heat exchanger
provides optimum heat transfer between high
and low temperature points in the low stage
leading to greater energy efficiency.
