Abstract
Topic of the study is the investigation of potentialities of energy simulation for optimizing the building refurbishment, by taking into account impacts of both envelope renovation and HVAC system selection. Energy audit and refurbishment of the Day-Hospital building of a great Italian health care facility are proposed. A meticulous energy diagnosis of the base case building and design of a complete renovation- by improving both building envelope and HVAC systems- are presented. All data and boundary conditions for dynamic energy investigations have been carefully selected, also by means of in-situ studies, in order to provide a reliable model. In particular, several energy efficiency measures, with reference to building envelope and HVAC systems, are analyzed and it will be evidenced that, step-by-step, a proper design, supported by the adoption of numerical studies, may optimize the energy performances of the building, as well as the indoor microclimatic control.
Highlights
The paper provides suggestions for energy audit of large health facilities, by underlining that the building energy simulation may be useful in order to design proper refurbishments and new energy-efficient buildings (Harries et al, 2013)
The steady-state approach is usually adopted for evaluating heating and cooling loads at rated conditions and it is proper for sizing the HVAC system
Dynamic energy simulations- by means of EnergyPlus 7.2.0 (DOE, 2012)- have been used in order to optimize the energy refurbishment of the building, starting by input data directly surveyed in-situ and by carrying out deep feasibility studies concerning the envelope renovation, the necessary values of indoor parameters according to the zones' uses, the HVAC solutions
Summary
Hospitals and Air-ConditioningThe paper provides suggestions for energy audit of large health facilities, by underlining that the building energy simulation may be useful in order to design proper refurbishments and new energy-efficient buildings (Harries et al, 2013). Dynamic energy simulations- by means of EnergyPlus 7.2.0 (DOE, 2012)- have been used in order to optimize the energy refurbishment of the building, starting by input data directly surveyed in-situ and by carrying out deep feasibility studies concerning the envelope renovation, the necessary values of indoor parameters according to the zones' uses, the HVAC solutions.
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