Thermodynamic cycle, correlations and nomograph for NH3NaSCN absorption refrigeration systems

Rogdakis, ED; Antonopoulos, KA

dc.contributor.author	Rogdakis, ED	en
dc.contributor.author	Antonopoulos, KA	en
dc.date.accessioned	2014-03-01T01:11:33Z
dc.date.available	2014-03-01T01:11:33Z
dc.date.issued	1995	en
dc.identifier.issn	0890-4332	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11700
dc.subject	Ambient Temperature	en
dc.subject	Coefficient of Performance	en
dc.subject	Thermodynamic Properties	en
dc.subject	Thermodynamics	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Ammonia	en
dc.subject.other	Cooling	en
dc.subject.other	Correlation methods	en
dc.subject.other	Performance	en
dc.subject.other	Refrigerants	en
dc.subject.other	Refrigeration	en
dc.subject.other	Solutions	en
dc.subject.other	Thermal cycling	en
dc.subject.other	Thermal effects	en
dc.subject.other	Thermodynamic properties	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Absorption refrigeration systems	en
dc.subject.other	Nomographs	en
dc.subject.other	Thermodynamic cycle	en
dc.subject.other	Refrigerators	en
dc.title	Thermodynamic cycle, correlations and nomograph for NH3NaSCN absorption refrigeration systems	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0890-4332(95)90069-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0890-4332(95)90069-1	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	The detailed thermodynamic cycle of-the NH3-NaSCN absorption refrigeration unit is presented, based on the thermodynamic properties of the working media. Correlations are developed, which express the coefficient of performance and the cooling capacity in terms of the required evaporation temperature, T-ev, and the available ambient temperature, T-amb. A nomograph is also presented, which shows in a compact form the behaviour of the NH3-NaSCN system and allows direct estimation of its main characteristics. It is concluded that if (T-amb - T-ev) varies from 0 to 40 degrees C, the theoretical coefficient of performance decreases linearly from 95 to 77%. For the same range of (T-amb - T-ev) the theoretical cooling capacity varies from 1150 to 1300 kJ/kg NH3 if T-ev varies from 0 to -15 degrees C. Under the conditions examined, for T-amb - T-ev > 23 degrees C, the coefficient of performance of the NH3-NaSCN system becomes higher than that of the NH3-LiNO3 system. The observed increase reached 4% at T-amb - T-ev = 40 degrees C.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Heat Recovery Systems and CHP	en
dc.identifier.doi	10.1016/0890-4332(95)90069-1	en
dc.identifier.isi	ISI:A1995RC12400009	en
dc.identifier.volume	15	en
dc.identifier.issue	6	en
dc.identifier.spage	591	en
dc.identifier.epage	599	en