Performance of a solar driven H2O/LiBr absorption panel cooling system

Rogdakis, ED; Antonopoulos, KA

dc.contributor.author	Rogdakis, ED	en
dc.contributor.author	Antonopoulos, KA	en
dc.date.accessioned	2014-03-01T02:48:08Z
dc.date.available	2014-03-01T02:48:08Z
dc.date.issued	1992	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33554
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026978996&partnerID=40&md5=79076267253cc1c31ca14c584d7d0b41	en
dc.subject.other	Buildings	en
dc.subject.other	Heat radiation	en
dc.subject.other	Lithium compounds	en
dc.subject.other	Mathematical models	en
dc.subject.other	Performance	en
dc.subject.other	Solar collectors	en
dc.subject.other	Solar refrigeration	en
dc.subject.other	Structural panels	en
dc.subject.other	Thermoanalysis	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Water	en
dc.subject.other	Solar driven water/lithium bromide absorption panel cooling system	en
dc.subject.other	Cooling systems	en
dc.title	Performance of a solar driven H2O/LiBr absorption panel cooling system	en
heal.type	conferenceItem	en
heal.publicationDate	1992	en
heal.abstract	In panel cooling of buildings, the heat produced within or inserted into a room is received by a cold fluid flowing through pipes fitted in the ceiling of the room. With such systems, considerable energy savings may be obtained because higher cooling temperatures are adequate owing to the available large cooling surfaces and the radiative heat exchange between people's heads and ceiling. Moreover cool storage within structural elements may decrease peak loads. The panel cooling system examined here uses a solar driven H2O/LiBr absorption refrigeration unit. A thermodynamic and thermal analysis of the whole system is carried out and the expected performance is predicted for operation during the typical summer in Athens using local climatological data. Because of the very high evaporation temperatures (up to 18°C), the theoretical coefficient of performance of the H2O/LiBr unit is much higher than that obtained in usual refrigeration applications, i.e. it reaches 94% with specific cooling capacity 2410-2450 kJ/kg H2O. For ratio of the panel to the solar collector areas equal to 2, the panel cooling power reaches at noon a value of 200 W/m2 and therefore the proposed system seems to be sufficient for the usual building-cooling needs in Greece. Diagrams are also provided for the selection of the panel pipe spacing which ensures best thermal matching between the refrigeration unit and the panel.	en
heal.publisher	Publ by ASME, New York, NY, United States	en
heal.journalName	American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES	en
dc.identifier.volume	27	en
dc.identifier.spage	135	en
dc.identifier.epage	140	en