COMPONENTS
When designing a hot or cold production and distribution plant, not only the production equipment must be taken into account, but also:
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The type of refrigerant gas
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compressor type
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Condensing medium
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hydraulic configuration
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Pumping
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Control of terminal units
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Heat exchange elements (AHU's, exchangers, fan coils, underfloor heating, etc.)
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Compliance with specific regulations (RSIF, RITE)
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Energy saving systems, such as freecooling, heat recovery, etc.
SYSTEM OBJECTIVES
01
FUNCTIONALITY
The system must be able to meet the demand at the desired set point in a stable and continuous manner.
02
EFFICIENCY
Do it with the lowest possible energy consumption
03
ENVIRONMENT
Reduce environmental impact by reducing operating costs, energy efficiency and selection ofrefrigerant
When designing the system, in the case of a new project, or auditing and reforming an existing plant, the objectives to be met are:
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functionality: The system must be capable of stably maintaining the desired set point both in the collector and in the terminal units. It seems trivial, but most of the current installations that are audited do not comply with this, especially at partial loads.
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Energy efficiency:Once the above is fulfilled and the system works properly (An installation that does not work, or even stops, may imply that the costs caused by the stoppage are greater than the potential energy savings available)Today, it is mandatory to do it in the most efficient way possible, and for this the vision of the system must be a holistic vision of the complete plant. It is not enough that the chillers are the most efficient, but that the hydraulic system corresponds to the needs, the variable flow is such, the control optimizes, etc...
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Minorenvironmental impactpossible: Energy efficiency in itself already reduces the environmental impact, but in addition to reducing the energy cost it is important ( and mandatory by the RSIF) to use the refrigerant with the lowest GWP possible.
