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Sensitivity analysis of base processes and equipment in HVAC plants using low and medium temperature heat sources Part 2
Analisi di sensitività dei processi di base e apparecchiature per la climatizzazione che utilizzano calore a media e bassa temperatura Seconda parte


M. Noro marco.noro@unipd.it1

Show more: Authors information and Publication history

Abstract
Useful utilization of low and medium temperature heat can be a valuable issue when designing nearly zero-energy buildings (2010/31/UE Directive) and considering 2018/2001/UE Directive on the promotion of the use of energy from renewable sources. From the thermodynamic point of view, heat recovery covers a lot of technologies: vapor compression chillers and heat pumps, sorption machines, power cycles, cogeneration. In the first part of this study, the impact of heat source, heat sink and environment temperatures is analyzed for such technologies, both from the energy and exergy point of view. In the second part of this study, such analysis is extended to humid air in the main psychrometric processes. On this basis, as in Mediterranean climates new and energy retrofitted buildings are going to have increasing coo- ling demand with respect to heating, direct and indirect evaporative cooling air conditioning plant schemes are studied from the exergy point of view.

Keywords

Heat source
Cogeneration
Trigeneration
Exergy analysis
Absorption chiller
Evaporative cooling

DOI

10.36164/AiCARRJ.67.02.02

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