Formulae for calculating the mean temperature difference of rubber to cooling medium in reclaimator and heat transfer coefficient of system have been derived from theory.

This paper, according to heat transfer basic equation, deduces overall heat transfer coefficients in the transmit heating tube of the pure counterflow arrangement, axial temperature profile of the fluid along the length of transmit heating tube, simulates logarithmic mean temperature difference in a double tube and the effective overall heat transfer coefficient, wi.

The logarithmic mean temperature difference and the integral mean temperature difference are analyzed in the optimum design of heat exchanger,the proposed approximate equations of logarithmic mean temperature difference in the literatures are discussed.

Study on heat transfer temperature difference between non-heated staircase and adjacent heated rooms;

Based Stirling ideal refrigeration cycle,the heat transfer temperature differences in the cold end and heat end of Stirling cooler were dealt with dimensionless method.

With the relationship between the pressure drop and the heat transfer temperature difference in the gas turbine recuperator included,the heat transfer difference can be further recommended as the evaluation criterion instead of the recuperator effectiveness for recuperative gas turbine cycles.

Using the method of integral average technique and defining a new prepared solution,this paper presented some new oscillation criteria of matrix differential equations with damping,which extend the results of Rogovchenko and Li for scalar cases and improve the results of Yang for matrix cases; a few examples was given at the end.