Experimental and numerical determination of a new wall-heat-gain function

Antonopoulos, KA; Democritou, F

dc.contributor.author	Antonopoulos, KA	en
dc.contributor.author	Democritou, F	en
dc.date.accessioned	2014-03-01T01:11:01Z
dc.date.available	2014-03-01T01:11:01Z
dc.date.issued	1995	en
dc.identifier.issn	0363-907X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11525
dc.subject	WALL HEAT GAIN	en
dc.subject	CONDUCTION TRANSFER FUNCTION	en
dc.subject	AIR CONDITIONING LOAD	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.other	Air conditioning	en
dc.subject.other	Climatology	en
dc.subject.other	Curve fitting	en
dc.subject.other	Finite difference method	en
dc.subject.other	Heat conduction	en
dc.subject.other	Least squares approximations	en
dc.subject.other	Solar radiation	en
dc.subject.other	Temperature	en
dc.subject.other	Transfer functions	en
dc.subject.other	Walls (structural partitions)	en
dc.subject.other	Air conditioning load	en
dc.subject.other	Conduction transfer function	en
dc.subject.other	Least squares fitting	en
dc.subject.other	Wall heat gain function	en
dc.subject.other	Heat transfer	en
dc.subject.other	Heat Transfer	en
dc.subject.other	Transient	en
dc.subject.other	Wall Heat Gain	en
dc.title	Experimental and numerical determination of a new wall-heat-gain function	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/er.4440190203	en
heal.identifier.secondary	http://dx.doi.org/10.1002/er.4440190203	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	A new 'wall-heat-gain function' is developed, which provides the heat entering a space through a wall under periodic outdoor conditions and constant indoor air temperature. The proposed function, which is much simpler than the well-known conduction transfer function, contains three coefficients U, w(1) and w(2) characterizing the wall and three parameters T-M, T-C and T-S characterizing the outdoor conditions (temperature and solar radiation). The wall coefficients U, w(1) and w(2) may be determined numerically by the use of the finite difference method or experimentally in the case of existing (built) walls of unknown properties. A related experimental set up has been developed. Ready to use values of the wall coefficients are provided for 15 typical wall constructions. The climatic parameters T-M, T-C and T-S either are available for some locations or may be easily calculated by least-squares fitting to local climatological data. In a modified form of the proposed function the three climatic parameters are reduced to two, which are available from ASHRAE for about 1000 stations around the world. The accuracy of the proposed wall heat gain function is very good for practical applications as proved by comparisons with corresponding finite difference solutions.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal of Energy Research	en
dc.identifier.doi	10.1002/er.4440190203	en
dc.identifier.isi	ISI:A1995QN18000002	en
dc.identifier.volume	19	en
dc.identifier.issue	2	en
dc.identifier.spage	103	en
dc.identifier.epage	116	en