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“project at italian hospital”
Demand Response programs are becoming an integral component of the evolving
smart grid infrastructure. Large commercial building owners and operators are
attracted by the cash payments received from their energy provider for their
willingness to shed energy load during periods of peak consumption. Tenant
comfort, however, remains paramount since building owners are concerned with
customer retention and attraction.
Demand-Response Service “price based” integrates into an existing infrastructure of
Building Automation Systems (BAS), and manages electrical load through those
systems by shedding, shifting and shaping electrical load to automate demand
response or in response to electricity price hourly on the Energy Stock Market,
generating cost savings of electrical power management.
The program is composed by scheduling of electrical loads, which are part of the domain
Demand-Response (HVAC, lighting system, Combined Heat & Power) and is determined daily
through a mathematical model based on these data:
• the energy markets;
• the power exchange;
• by economic indices forecasting;
• the weather;
• from the calendar of activities.
based on the expected power consumption of each load and considering reducing power
consumption produced by each every action modulation (load forecasting data).
Scheduling of each energy load are determined by a special audit with these the
objectives of which are:
• determine which are most suitable for the loads to be included in the service of
• determine which are the lower limits of each load scheduling;
• determined for each scheduling, the consequences for the environment in terms
of measurable variables comfort index (ie. degree of lighting, temperature, relative
• determining, for each modulation electricity saving.
Implementation at hospital
Implementation of the level of communication between the systems of Building
Automation System (BAS) present at the hospital to manage all loads service object
of Demand-Response (HVAC, lighting and Combined Heat & Power system) and
the control center.
The measurement of electrical consumption of each load is carried out thanks to a
series of smart meter (one for each load) which enable the real-time veriﬁcation of
the saving provided by the scheduling performed.
The dashboard management allows to the engineers and plant managers of the
customer to control and operate the system at any time any recovery operations on
loads that do return the environment in standard conditions.
Implementation at hospital
The implementation at hospital covered loads HVAC and the lighting of the common
areas. Overall the perimeter of experimentation on a single building.
The schedules of the loads were applied in the bonds shared with the technical
structure of the hospital.
One-third reduction of the illumination in areas of natural light;
Management of room temperature setpoint in public areas and rooms of
hospitalization up to a maximum of 3° C.
Adjustment of air changes of the cooling system up to a maximum reduction of
Energy Index, Energy
Short Term Load
HVAC Lighting Lighting BAS HVAC BAS