Mechanically Refrigerated
Thermal Platforms
The ESS, Inc. MRTP thermal platform systems rely
upon a closed loop mechanical refrigeration cooling system. This eliminates the
need for expendable refrigerants such as liquid nitrogen and liquid carbon
dioxide. Eliminating the non-reusable refrigerants also eliminates the
purchasing cost and handling expenses, not to mention the associated icing and
water condensation. To learn more about this question, please read the white paper
entitled Environmental Testing.
The MRTP utilizes an efficient mechanical
refrigeration system that re-circulates the refrigerant in a closed loop system.
Only environmentally friendly zero-ozone depleting refrigerants are used.
Proprietary design features provide fast ramp rates with efficient heat removal.
The system is portable and a single AC outlet
is all that is needed to operate it. The system normally uses an air-cooled
condenser, which rejects a certain amount of heat into the room. If a water
cooling source is available, the system can operate with a water-cooled condenser.
If
many systems will operate in the same room a water cooling circuit should be considered to
remove the heat rejected by the refrigeration cycle.
There are two types of MRTP
systems. The first type is called single stage and uses one refrigeration loop to cool
the thermal platform. The second type called cascade uses two
refrigeration loops in series enabling the temperature of the thermal plate to be as low as -65șC.
Depending on the use or the space
intended for
the MRTP, two configurations are
available. A flexible umbilical connects the thermal platform to the
chiller cabinet or the platform is attached to the front of the cabinet and
integrated into a work shelf.
To address special
requirements, ESS, Inc. offers several Accessories for its MRTP systems. Accessories are
available such as a polycarbonate cover, an adapter plate, a hold down clamp, a
clam shell dry-box desiccator, a low pressure nitrogen purge kit and a high
pressure nitrogen purge kit.
Several standard sizes for the thermal plate are
listed in the specifications product data sheets.
Types (single
stage or cascade) Configurations
(umbilical or table rack)
Accessories
(cover, adapter...) Specifications
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