. "2010-04-16+02:00"^^ . . "http://www.isvav.cz/projectDetail.do?rowId=GA106/07/0938"^^ . "2007-01-01+01:00"^^ . " physical modeling" . "2015-02-09+01:00"^^ . . . . . . . "Research of heat transfer at cooling of hot surfaces with water nozzles"@en . "water nozzles; cooling; physical modeling; heat transfer coefficient"@en . "GA106/07/0938" . . . . "V\u00A0r\u00E1mci projektu budou zkoum\u00E1ny z\u00E1konitosti transportu tepla p\u0159i chlazen\u00ED hork\u00FDch povrch\u016F vodn\u00EDmi tryskami. Z\u00E1kladn\u00ED mechanismus d\u011Bj\u016F na chlazen\u00E9m povrchu a v\u00A0jeho bl\u00EDzkosti st\u00E1le nen\u00ED pln\u011B objasn\u011Bn, cel\u00FD proces chlazen\u00ED je obt\u00ED\u017En\u011B matematicky definovateln\u00FD. V\u00FDzkum bude zalo\u017Een na fyzik\u00E1ln\u00EDm modelov\u00E1n\u00ED. Vodn\u00ED trysky budou hodnoceny, pro tlaky chladic\u00EDho m\u011Bdia mezi 0,1 a\u017E 2 MPa, pomoc\u00ED ost\u0159ikov\u00FDch charakteristik, stanoven\u00FDch na studen\u00E9m fyzik\u00E1ln\u00EDm modelu. Chladic\u00ED \u00FA\u010Dinky trysek budou posuzov\u00E1nym\u011B\u0159en\u00EDm sou\u010Dinitele p\u0159estupu tepla mezi ochlazovan\u00FDm povrchem a okol\u00EDm na tepl\u00E9m fyzik\u00E1ln\u00EDm modelu. Pro konkr\u00E9tn\u00ED trysky bude hled\u00E1na z\u00E1vislost mezi hodnotou sou\u010Dinitele p\u0159estupu tepla a teplotou povrchu a tlakem chladic\u00ED vody. Dosavadn\u00ED v\u00FDzkumy doposud ne\u0159e\u0161ily korelaci mezi intenzitou ost\u0159iku a sou\u010Dinitelem p\u0159estupu tepla. Pro typick\u00E9 konstrukce trysek, (pln\u00FD ku\u017Eel, dut\u00FD ku\u017Eel, \u0161t\u011Brbinov\u00E9) a tvary ochlazovan\u00FDch ploch budou stanoveny souvislosti mezi intenzitou ost\u0159iku a intenzitou chlazen\u00ED a pot\u00E9" . "water nozzles" . . . . "Within the framework of this project, the heat transfer conditions during the hot surface cooling by water nozzles will be investigated. As yet, there is no full explanation of mechanisms of the processes on the cooled surface and in its vicinity. Obtaining a mathematical definition of the whole cooling process is a very difficult task. The research will be based on physical modeling. Nozzles evaluation for water pressure from 0.1 to 2 MPa will be done by admission characteristics using the cold physical model. The necessary measurements of the heat-transfer coefficient between cooled surface and the ambient using a hot physical model will be done. Relations between the heat-transfer coefficient and surface temperature and water pressure will bestudied. Correlation between the heat-transfer coefficient and the spray intensity has not been studied in previous researches. For typical nozzle designs (full cone, hollow cone, flat spray) and shapes of the cooled area, relations between the admission"@en . . "46"^^ . "46"^^ . " cooling" . "V\u00FDzkum transportu tepla p\u0159i ochlazov\u00E1n\u00ED hork\u00FDch povrch\u016F vodn\u00EDmi tryskami" . . . "P\u0159i \u0159e\u0161en\u00ED projektu byly vyvinuty nov\u00E9 origin\u00E1ln\u00ED metody v\u00FDzkumu ochlazov\u00E1n\u00ED hork\u00FDch povrch\u016F vodn\u00EDmi tryskami. Bylo vybudov\u00E1no unik\u00E1tn\u00ED automatizovan\u00E9 laboratorn\u00ED pracovi\u0161t\u011B, vybaven\u00E9 pr\u016Fmyslov\u00FDm robotem, umo\u017E\u0148uj\u00EDc\u00ED v\u00FDzkum ochlazov\u00E1n\u00ED libovoln\u00FDch tvar\u016F hork\u00FDch ploch vodn\u00EDmi i vodovzdu\u0161n\u00FDmi tryskami. Byl vyvinut kombinovan\u00FD sn\u00EDma\u010D, kter\u00FD sjednocuje tepl\u00FD, studen\u00FD a silov\u00FD model do jednoho modelu"@cs . . . "1"^^ . . "2010-12-31+01:00"^^ . "0"^^ . "In the frame of the project solving there were developed new original research methods of cooling hot surfaces using water nozzles. A unique automated laboratory workplace was built, equipped with an industrial robot, allowing research of cooling hot surfaces of any shape using water and water-air nozzles. The combined sensor was developed, which integrates the warm, cold, and the impact model i"@en . "0"^^ .