23 September 2011

A DEVELOPMENT OF NEW HIGHLY EFFECTIVE ICE THERMAL STORAGE UNIT


As the effectiveness of leveling the electricity consumption of ice thermal storage
is great, in order to obtain popularity in the market, new high efficiency ice thermal storage
system ‘Compact Cube Ice’ was developed to meet both of high energy saving performance
and simplified system constructions which are required by the market.
High efficiency Ice thermal storage unit, newly developed, has achieved both of 51% COP
improvement for ice thermal storage mode and 34% COP improvement for cooling driving
mode by introducing new technology for compressor, air-side heat-exchanger and refrigerant
circuit compared with conventional model.
Furthermore, new system controller that is able to control both the heat pump chiller (nonthermal
storage heat source machine) and the ice thermal storage unit, the plural unit system
became easily to be applied to a large-scale project.
When the equipment replacement is assumed, the reduction of CO2 emission is expected by
51% in the replacement from the existing absorption chiller.
Moreover, the reduction of CO2 emission is expected by 31% by the replacement from the
existing ice thermal storage unit.
We report on the energy conservation performance and the feature about ‘Compact cube
ICE’ that adopts new technologies such as inverter driven scroll compressors, new
refrigerating cycles composed of two evaporation temperatures, and new system controller
that is able to become easily to be applied to a large-scale project