1. Arrangement for cooling of an electrical machine, comprising:
an outer rotor comprising a plurality of magnets;
an inner stator connected via bearings with the outer rotor;
the inner stator comprising a plurality of laminate plates which are connected by two end plates with the inner stator;
the laminate-plates comprise a plurality of slots in which are disposed metal windings of a stator coil;
the stator coil extends beyond the slots to form winding heads of the stator coil;
wherein the magnets are disposed partly into an air gap which is between the outer rotor and the laminate plates;
a fan arranged to circulate cooling air inside the electrical machine along a route from the fan, through a first opening through the end plates, through the winding heads, through the air gap, along the end plates, through a second opening through the end plates, through an air-to-liquid heat exchanger, and back to the fan, thus the outer rotor, the winding heads and the laminate plates are cooled and heat is transferred to the heat exchanger;
where the heat exchanger is connected with a cooling liquid inlet and with a cooling liquid outlet which are used to transport cooling liquid to and from the heat exchanger, thus heat from the heat exchanger is carried away to an outer side of the electrical machine;
wherein a plurality of hollow pipes are in thermal contact with the laminate plates;
wherein first ends of the hollow pipes are connected with the cooling liquid inlet and second ends of the hollow pipes are connected with the cooling liquid outlet, thus a cooling circuit is formed for the cooling liquid to cool the hollow pipes and laminate plates;
wherein the heat exchanger and fan are arranged within a space which is limited by the inner stator, the two end plates and the laminate plates.
2. The arrangement of claim 1, further comprising:
a first side of the laminate plates comprising the slots faces the air gap, and
a second side of the laminate plates opposed to the first side is in thermal connect with the hollow pipes.
3. The arrangement of claim 1, wherein the hollow pipes are formed as an integral part of the laminate plates.
4. The arrangement of claim 1, wherein the hollow pipes are integrated with the metal windings or with the slots of the laminate plates.
5. The arrangement of claim 1, wherein the hollow pipes are made of metal or ceramic.
6. The arrangement of claim 1, wherein the electrical machine is a generator which is located inside a nacelle of a wind turbine.
7. The arrangement of claim 1, wherein the electrical machine is totally encapsulated by a shell so only air within the electrical machine is circulated by the fan.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A resin system, comprising:
a first capped oligomer having the formula:
Yi-A-Yi,
wherein:
i=1 or 2;
Y is a nadic or dinadic functional endcap; and
A is a chemical backbone, wherein the chemical backbone comprises one or more nanoparticles; and
a second capped oligomer having the formula:
Di-Q-Di,
wherein:
i=1 or 2;
D is a nadic or dinadic functional endcap; and
Q is a hydrocarbon backbone.
2. The resin system of claim 1, wherein:
from about 1% to about 25% of the chemical backbones and hydrocarbon backbones have nadic endcaps; and
from about 75% to about 99% of the chemical backbones and hydrocarbon backbones have dinadic endcaps.
3. The resin system of claim 1, wherein the one or more nanoparticles are inorganic nanoparticles.
4. The resin system of claim 1, wherein the one or more nanoparticles are organic nanoparticles.
5. The resin system of claim 1, wherein the one or more nanoparticles have inorganic portions and organic portions.
6. The resin system of claim 1, wherein the one or more nanoparticles are selected from the group consisting of: functionalized silsesquioxanes, functionalized carbon black, functionalized silicates, functionalized graphene, functionalized nanographite, functionalized carbon nanotubes, functionalized halloysite nanotubes, functionalized boron nitride nanotubes and combinations thereof.
7. The resin system of claim 1, wherein the chemical backbone further comprises one or more moieties selected from the group consisting of: imidesulfone, ether, ethersulfone, amide, imide, ester, estersulfone, etherimide, amideimide, oxazolyl, oxazolyl sulfone, thiazolyl, thiazolyl sulfone, imidazolyl, imidazolyl sulfone, heterocyclyl sulfone, and combinations thereof.
8. The resin system of claim 7, wherein the hydrocarbon backbone includes one or more moieties selected from the group consisting of: imidesulfone, ether, ethersulfone, amide, imide, ester, estersulfone, etherimide, amideimide, oxazolyl, oxazolyl sulfone, thiazolyl, thiazolyl sulfone, imidazolyl, imidazolyl sulfone, heterocyclyl sulfone, and combinations thereof.
9. The resin system of claim 1, wherein the dinadic functional endcaps are dinadic phenyl amine endcaps selected from the group consisting of:
and combinations thereof, wherein NA is a nadic anhydride.
10. The resin system of claim 9, wherein NA is illustrated by the formula:
wherein
G=\u2014CH2\u2014, \u2014SO2\u2014, \u2014S\u2014, \u2014O\u2014, or \u2014CO\u2014, and
R=hydrogen, lower alkyl or phenyl.
11. The resin system of claim 1, wherein the nadic functional endcaps are nadic phenyl amine endcaps selected from the group consisting of:
and combinations thereof, wherein NA is a nadic anhydride.
12. The resin system of claim 11, wherein NA is illustrated by the formula:
wherein
G=\u2014CH2\u2014, \u2014SO2\u2014, \u2014S\u2014, \u2014O\u2014, or \u2014CO\u2014, and
R=hydrogen, lower alkyl or phenyl.
13. A resin system according to claim 1, wherein at least part of the first capped oligomer is reacted with at least part of the second capped oligomer to form a reaction product.
14-20. (canceled)
21. The resin system of claim 6, wherein the nanoparticles are functionalized with one or more functional groups selected from the group consisting of: carboxy, epoxy, ether, ketone, amine, hydroxy, alkoxy, alkyl, aryl, aralkyl, alkaryl, lactone, and combinations thereof.
22. The resin system of claim 1, wherein the one or more nanoparticles are covalently attached to Y.
23. A resin system, comprising:
a first capped oligomer having the formula:
Yi-A-Yi,
wherein:
i=1 or 2;
Y is a nadic or dinadic functional endcap; and
A is a chemical backbone, comprising:
one or more nanoparticles selected from the group consisting of: functionalized silsesquioxanes, functionalized carbon black, functionalized silicates, functionalized graphene, functionalized nanographite, functionalized carbon nanotubes, functionalized halloysite nanotubes, functionalized boron nitride nanotubes and combinations thereof; and
one or more moieties selected from the group consisting of: imidesulfone, ether, ethersulfone, amide, imide, ester, estersulfone, etherimide, amideimide, oxazolyl, oxazolyl sulfone, thiazolyl, thiazolyl sulfone, imidazolyl, imidazolyl sulfone, heterocyclyl sulfone, and combinations thereof; and
a second capped oligomer having the formula:
Di-Q-Di,
wherein:
i=1 or 2;
D is a nadic or dinadic functional endcap; and
Q is a hydrocarbon backbone.
24. The resin system of claim 23, wherein the dinadic functional endcaps are dinadic phenyl amine endcaps selected from the group consisting of:
and combinations thereof, wherein NA is a nadic anhydride.
25. The resin system of claim 24, wherein NA is illustrated by the formula:
wherein
G=\u2014CH2\u2014, \u2014SO2\u2014, \u2014S\u2014, \u2014O\u2014, or \u2014CO\u2014, and
R=hydrogen, lower alkyl or phenyl.
26. The resin system of claim 23, wherein the nadic functional endcaps are nadic phenyl amine endcaps selected from the group consisting of:
and combinations thereof, wherein NA is a nadic anhydride.
27. The resin system of claim 26, wherein NA is illustrated by the formula:
wherein
G=\u2014CH2\u2014, \u2014SO2\u2014, \u2014S\u2014, \u2014O\u2014, or \u2014CO\u2014, and
R=hydrogen, lower alkyl or phenyl.