X, x, dimensionless and dimensional (m) space coordinates; ~, heat-transfer coefficient W/(m2"K); 6, thickness of the coil insulation, m; ~, thermal conductivity of the in- sulation, W/(m'K); 0 = (Tw - Tfin)/(Tin i - Tfin), % = (Tg - Tfin)/(Tin i - Tfw), dimen- sionless excess temperature of the wall and coolant, respectively; H, heat transfer perimeter, m; r known time function; ~, time, sec; ~b, balance time of cooling, sec; St* = eNL/(Gcp)g modified Stanton parameter. Subscripts: w, wall; g, coolant; p, at constant pres- sure; int, fin, initial and finite states, respectively; per, permissible; c, heat flux through the coil insulation; L, heat influx from the surrounding medium; max, maximum; %, cooling time of the spiral channel with a variable temperature of the coolant at the inlet. LITERATURE CITED I. D. P. Ivanov, V. E. Keilin, B. A. Stavisskii, and N. A. Chernoplekov, At. Energ., 45, No. 3, 171-1'74 (1978). 2. V. P. Belyakov, V. A. Glukhikh, A. M. Kavun, et al., At. Energ., 52, No. 2, 101-108 (1982). 3. S. Foner and B. Schwartz, Superconducting Machines and Devices [Russian translation], Moscow (1977). 4. E. P. Serov and B. P. Korol'kov, Process Dynamics in Heat- and Mass-Transfer Equipments [in Russian], Moscow (1967). 5. A. M. Baron, V. M. Eroshenko, and L. A. Yaskin, Cryogenics, 17, No. 3, 161-166 (1977). 6. M. C. Jones, Cryogenics, 20, No. 3, 139-145 (1980). 7. R. W. Derby, Proceedings of the Fifth Symposium on Engineering Problems of Fusion Re- search, New York (1973), pp. 376-379. 8. B. A. Vakhnenko, S. P. Gorbachev, V. I. Deev, et al., Calculation and Experimental Meth- ods in Nuclear-Reactor Thermophysics [in Russian], Moscow (1982), pp. 44-51. 9. B. A. Vakhnenko, S. P. Gorbachev, V. I. Deer, et al., Inzh.-Fiz. Zh., 47, No. 3, 372- 376 (1984). i0. V. P. Belyakov, Cryogenic Engineering and Technology [in Russian], Moscow (1982). ii. S. P. Gorbachev, A. A. Krikunov, and O. A. Goncharuk, Inzh.-Fiz. Zh., 39, No. 4, 629- 635 (1980). 12. V. E. Keilin, I. A. Kovalev, and S. A. Lelekhov, Inzh.-Fiz. Zh., 27, No. 6, 1081-1089 (1974). 13. E. P. Serov and B. P. Korol'kov, Steam Generator Dynamics [in Russian], Moscow (1972). 14. S. P. Gorbachev, A. A. Krikunov, and S. D. Ladokhin, Proceedings of the Second All-Union Conference on Engineering Problems in Thermonuclear Fusion Reactors, Leningrad, June 23- 25, 1981 [in Russian], Vol. 2, Leningrad (1982), pp. 152-158. 15. S. S. Kutateladze, Similarity Analysis in Thermophysics [in Russian], Novosibirsk (1982). EXPERIMENTAL DEVICE FOR MEASUREMENT OF ISOBARIC SPECIFIC HEAT OF ELECTROLYTES AT HIGH STATE PARAMETERS Ya. M. Naziev, M. M. Bashirov, and Yu. A. Badalov UDC 536.2.083 Principles of operation and construction of an experimental device for mea- surement of isobaric specific heat of liquids (electrolytes) at high pres- sures are described. The major shortcomings of existing calorimeters were pointed out in [i], which proposed a new pulse-regular method for simultaneous measurement of isobaric specific heat cp, thermal conductivity %, and thermal diffusivity a of electrolytes. This method permitted measure- ments over wide ranges of temperature and pressure. In the present study this method is realized experimentally for measuring isobaric specific heat of liquids. Ch. ll'drym Azerbaidzhan Polytechnic Institute, Baku. Translated from Inzhenerno-Fizi- cheskii Zhurnal, Vol. 51, No. 5, pp. 789-795, November, 1986. Original article submitted September 17, 1985. 1320 0022-0841/86/5105- 1320 $12.50 9 1987 Plenum Publishing Corporation