| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7a0abd21b8e8ddedac229c41f6a0e47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_25d4f88aea8c9a7d55415e33dee3acd6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F24S80-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E10-44 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F24S10-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F24S80-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F24S10-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F24S10-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F24J2-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F24J2-04 |
| filingDate |
1975-07-21^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-02-13^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cffb0c58de3d924258085f84ebf08233
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c7313eff1ec42a88a574927c47916de |
| publicationDate |
1979-02-13^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4138992-A |
| titleOfInvention |
Viscosity stabilized solar ponds |
| abstract |
A solar pond for collecting solar energy preferably filled with a shallow layer of water over a blackened sunlight-absorbing surface which is in turn in contact with a heat-storage or heat exchanging medium. Convection in the solar pond is inhibited by raising the viscosity of the pond by adding gelling agents, for example, a polyethyleneoxide adduct of a hydrophobic residue. Convection is further inhibited by dividing the pond into cells such that the Rayleigh number of the fluid within the cell structure is less than the critical Rayleigh number at which convection may occur. The dividers may be translucent or transparent generally horizontal sheets or generally vertical sheets, forming matrices which are rectangular, hexagonal or triangular in horizontal cross-sections. Alternatively, the gelled fluid medium of the solar pond may be bagged in translucent elongated bags which when arranged in the pond have their shortest dimension less than that which will support convection. Formulas are given for computing the maximum permissible shortest dimension of the cells of the structures disclosed and a general formula is given for computing this dimension in any configuration. In one embodiment of the invention, the solar pond is merely made shallow enough and viscous enough that convection will not take place. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0166067-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0166067-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109901240-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4672950-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4440148-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4744349-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4541244-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4408459-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4326498-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4537179-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014144604-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9482473-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4572159-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5368412-A |
| priorityDate |
1975-07-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |