Title: Untersuchung von Reziproken Salzpaaren als Medien zur Latentwaermespeicherung mit Direktem Waermetausch
Authors: TAMME R.ALLENSPACHER H.
Publisher: European Commission
Publication Year: 1986
JRC Publication N°: JRC4167
Other Identifiers: EUR 10634 DE
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC4167
Type: EUR - Scientific and Technical Research Reports
Abstract: THE SUITABILITY OF THE RECIPROCAL SALT PAIRS NANO3/BA(OH)2.8H2O(I) AND KNO3/BA(OH)2.8H2O(II) AS LOW TEMPERATURE LATENT HEAT STORAGE MATERIALS HAS BEEN STUDIED IN THERMOANALYTIC, STATIC AND DYNAMIC EXPERIMENTS. THE RESULTS OF THE TEMPERATURES AND ENTHALPIES OF TRANSITION OF THESE RECIPROCAL SALT PAIRS DETERMINED BY OTHER AUTHORS COULD BE CONFIRMED BY THERMOANALYTIC MEASUREMENTS. STATIC TESTS SHOWED A DECREASE OF HEAT STORAGE CAPACITY DURING THE FIRST CYCLES AND THAT A CONSTANT HEAT STORAGE CAPACITY OF 40-60 % OF THE INITIAL VALUE WAS ATTAINED AFTER 10-20 CYCLES. CYCLIC TESTS IN A DYNAMIC 10 1 - HEAT STORAGE SYSTEM SHOWED THAT THE HEAT STORAGE CAPACITY OF SYSTEM I AMOUNTS TO 210 KJ/KG IN THE TEMPERATURE RANGE FROM 57 C TO 37 C AND THAT OF SYSTEM II + 10 % H2O AMOUNTS TO 160 KJ/KG IN THE TEMPERATURE RANGE FROM 70 C TO 50 C. THE INVESTIGATIONS HAVE SHOWN THAT RECIPROCAL SALT PAIRS CAN BE USED AS HEAT STORAGE MATERIALS IN DYNAMIC LATENT HEAT STORAGE SYSTEMS. A HEAT STORAGE CAPACITY OF 80 KWH/M3 SHOULD BE REALIZED WITH SYSTEM I IN THE TEMPERATURE RANGE FROM 40 C TO 50 C, WHERE NO SATISFACTORY HEAT STORAGE MEDIUM COULD BE FOUND UP TO NOW.
JRC Institute:Joint Research Centre Historical Collection

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