quantity of heat
6.The Convection and radiation between smoke and trunk of bigger arbor, smaller arbor, bush, and leaves of bigger arbor, was calculated, their total quantity of heat and density of heat were compared respectively, and the in- fluences of velocity and ternperature of smoke flow, size of woods, reflux zone on heat transfer wer discussed as well.
7.The results indicates that the frost accumulation on the surface is beneficial to the performance of system because of increasing of heat transfer coefficient between air and heat transfer surface, while frost is thick enough, the heating capacity, coefficient of performance (COP) of heat pump and air quantity of fan reduce rapidly.
8.The paper introduces the fundamentals of the temperature distribution in the borehole drilled in the frozen formation, and discusses the ascertainment of these parameters, including the mass quantity of circulation medium, the coefficient of thermal conductivity of drilling rods, the coefficient of the intensity of heat exchange and the coefficient of unstable heat exchange between the rock and the circulation medium, and the rising of the temperature of the circulation medium in the bottom of the bore.
