Abstract
Use of variable speed compressors and variable speed fans for both
the evaporator and the condenser makes the refrigeration system
more flexible, adds to the degree of freedom of the control system
and therefore makes it possible to (on-line) optimise the various
speeds involved. Say, for example that the cooling capacity must
be increased due to increased cooling load. This can be done by
increasing the compressor speed and/or the evaporator fan speed
and also to some extent by increasing the condenser fan speed. The
general control problem is to obtain the desired temperature of
the cooled air, while choosing the combination of compressor
speed, evaporator fan and condenser fan speeds which minimises the
total power consumption of the motors involved. A system and
integrated control viewpoint is necessary as a
“component-oriented” and “single-loop-control” approach will not
lead to the discovery and therefore the achievement of the
potential for energy saving. This control/optimisation problem is
investigated using a steady-state simulation model.
Original language | English |
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Title of host publication | Energy-optimal speed control of fans and compressor in a refrigeration system |
Publication date | 1998 |
Publication status | Published - 1998 |
Event | Eurotherm Seminar no. 59 - Nancy, France Duration: 6 Jul 1998 → 7 Jul 1998 |
Conference
Conference | Eurotherm Seminar no. 59 |
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Country/Territory | France |
City | Nancy |
Period | 06/07/1998 → 07/07/1998 |