Search results for "Solar cooling"
showing 10 items of 27 documents
Solar Cooling
2007
Life Cycle Assessment (LCA) of solar cooling systems with 12 kW absorption and 8 kW adsorption chillers
2011
Analisi comparata di sistemi solari per il condizionamento tramite la metodologia LCA
2013
Lo studio mostra un'applicazione della metodologia Life Cycle Assessment finalizzata alla valutazione delle prestazioni energetico-ambientali di due differenti tipologie di sistemi di raffrescamento che utilizzano energia solare per applicazioni nel settore civili d'utenza. In dettaglio, sono analizzati sistemi energetici basati su macchine frigorifere convenzionali connesse a impianti fotovoltaici e sistemi di solar cooling alimentati da fluidi a bassa temperatura. I risultati evidenziano che le prestazioni energetico-ambientali dei sistemi connessi alla rete sono superiori a quelle degli altri sistemi, mentre la produzione dei sistemi di accumulo limita la competitività dei sistemi stand-…
LCA of a solar heating and cooling system equipped with a small water–ammonia absorption chiller
2012
The development of renewable energy technologies is a critical tool for reducing climate change and the reliance on fossil fuels. However, renewable energy technologies cannot be considered totally clean because they require energy consumption and have environmental impacts that cannot be neglected during their life cycle. In this paper, the life cycle assessment methodology was applied to assess resource use and other environmental burdens related to the entire life-cycle steps of a solar cooling plant. The investigated system works with an absorption chiller assisted by a solar plant. Two back-up configurations (hot back-up and cold back-up) were examined in two localities: Palermo (south…
Solar cooling: study on the technical-economic feasibility of a plant in a hotel.
2009
Solar air conditioning allows more energy savings than air conventional conditioning plants. Just like the thermal solar systems for heat production destined to large consumers, solar air conditioning represents a technology that turns out to be economically more favorable. Its employment for the summer air conditioning of buildings represents today an ulterior and very interesting field of application. This article shows the results of a study on the technical-economic feasibility of a solar cooling plant realized in a hotel in South Italy. Just like the air conditioning load produced by electric power, hot water produced by thermal solar plants has a periodic character which, in both case…
NEW DEC OPEN CYCLE FOR AIR CONDITIONING BASED ON FIXED COOLED ADSORPTION BEDS AND WET HEAT EXCHANGERS
2013
In this work, a new solar Desiccant Evaporative Cooling (DEC) concept is presented. In the proposed system, two fixed packed desiccant beds of silica gel, operating in a batch process, are used as an alternative solution to the common adsorption rotor for dehumidifying outside air. As well known, adsorption heat due to water condensation considerably reduces the dehumidification capacity of the desiccant material, causing inefficiencies in performance. The aim of the work is to overcome the mentioned intrinsic thermodynamic limit of the adsorption rotor technology. The proposed core component is a fin and tube heat exchanger, commonly used in several air conditioning applications, wherein t…
Beccali M., Progettazione, realizzazione e monitoraggio di un impianto Solar Desiccant and Evaporative Cooling (DEC)
2010
Heat driven cooling technologies: open clycle systems”, in Solar Cooling Handbook: A guide to solar assisted cooling and dehumidification processes
2013
Desiccant cooling simulation and design in Matlab/Simlink environment: implementation and validation of the model
2009
Monitoring Program of Small-Scale Solar Heating and Cooling within IEA-SHC Task 38 – Procedure and First Results
2010
Within IEA-SHC Task 38 (Solar Air Conditioning and Refrigeration), a monitoring procedure for solar heating and cooling systems was developed. This methodology includes measurements of all relevant energy flows (heat, cold, electricity) to be able to derive key figures such as primary energy ratio, electrical coefficient of performance, solar heat management efficiency, fractional savings for heating and cooling compared to a conventional (non solar) heating and cooling system. A number of small-scale systems for solar heating and cooling are currently being monitored across Europe. For a handful of systems monitoring data of at least a full year of operation is already available. These sys…