Compositions – Frost-preventing – ice-thawing – thermostatic – thermophoric,...
Patent
1977-04-20
1978-07-11
Pitlick, Harris A.
Compositions
Frost-preventing, ice-thawing, thermostatic, thermophoric,...
252 67, 165104S, 62324, C09K 506, F25B 2900, F25B 1300
Patent
active
041000927
ABSTRACT:
A combination thermal energy storage material capable of functioning in two discrete temperature ranges and comprised of two constituents, one of which has a phase change in the low temperature range between about 35.degree. F. and about 55.degree. F., and the other of which has a phase change in the high temperature range of between about 90.degree. F. and about 130.degree. F. Both temperature ranges are selected to correspond with the operable and desirable ranges for a heat pump operation. The two constituents are selected to be non-reactive with one another and in the mixture maintain independent phase change characteristics. However, the mixture itself alters in some cases, depending upon concentration, the melting points of each member of the pair so that the transition temperatures of the phase changes in the mixture are somewhat different and somewhat lower than the phase changes characteristic of the independent constituents and is dependent upon the concentration of the constituents in the mixture. The pairs of materials selected can, therefore, function in the heat pump environment to provide a heat sink into which heat may be dissipated for air-cooling purposes as well as a heat source which provides heat for heating purposes. Preferred pairs of materials include (a) a hydrocarbon oil paired with a wax fraction; (b) a C.sub.8 fatty acid paired with a C.sub.14 -C.sub.18 fatty acid; (c) a C.sub.10 -C.sub.12 alcohol with a C.sub.14 -C.sub.18 fatty acid; and (d) a C.sub.10 -C.sub.12 alcohol with a wax fraction. Preferred weight percent of the components are also selected to conform to the high and low transition temperature ranges used as parameters.
REFERENCES:
patent: 2726211 (1955-12-01), Schaefer
patent: 2847834 (1958-08-01), Atchison
patent: 3019614 (1962-02-01), Schubert
patent: 3301001 (1967-01-01), McKinney
patent: 3356828 (1967-12-01), Furness
patent: 3548923 (1970-12-01), Nakano et al.
patent: 3823089 (1974-07-01), Ryan et al.
Loeb Leopold
Spauschus Hans O.
Boos Francis H.
General Electric Company
Pitlick Harris A.
Yungman Bruce A.
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