After a brief description of the main components of heating, ventilation, and air-conditioning (HVAC) plants, the chapter highlights, at different levels, the need for an integrated approach, to consider the several interactions with the building and its users and among the HVAC subsystems. This approach drives the renovation process, the design choices, and the described modeling and dynamic simulation techniques. Next, a review is conducted of the most efficient and promising techniques and technologies for energy efficiency in HVAC systems, particularly focusing on heat pump (HP) systems, thermal energy storages, and advanced control strategies. Finally, two case studies of efficient retrofit solutions are presented: the first one shows the cost-benefit optimization of sizing and management of a ground-coupled HP and back-up systems, for given building loads; the second one stresses the importance of developing tailored dynamic models and simulation tools, when evaluating and implementing systems with highly variable energy performance, such as air-to-water HPs.
Chapter 9.3. Solutions to Improve Energy Efficiency in HVAC for Renovated Buildings
Walter Grassi;Paolo Conti;Eva Schito;Daniele Testi
2018-01-01
Abstract
After a brief description of the main components of heating, ventilation, and air-conditioning (HVAC) plants, the chapter highlights, at different levels, the need for an integrated approach, to consider the several interactions with the building and its users and among the HVAC subsystems. This approach drives the renovation process, the design choices, and the described modeling and dynamic simulation techniques. Next, a review is conducted of the most efficient and promising techniques and technologies for energy efficiency in HVAC systems, particularly focusing on heat pump (HP) systems, thermal energy storages, and advanced control strategies. Finally, two case studies of efficient retrofit solutions are presented: the first one shows the cost-benefit optimization of sizing and management of a ground-coupled HP and back-up systems, for given building loads; the second one stresses the importance of developing tailored dynamic models and simulation tools, when evaluating and implementing systems with highly variable energy performance, such as air-to-water HPs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
