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that, the higher the air temperature in summer, the larger the unit depth heat rejection, and the more the cooling capacity supply to the users. The maximum and minimum values were 92 W and 35 W, respectively... temperature) Fig. 3 Heat discharge capacity of unit hole depth in summer It can be seen in Fig. 4 that the COP of heat pump and system fluctuated largely. This is because the COP is of a certain......
of a landfill. As a landfill takes many years to fill to its capacity, waste at the bottom of the landfill is expected to have a different heat production rate from the waste close to the top surface... J. Cent. South Univ. (2019) 26: 3175-3187 DOI: https://doi.org/10.1007/s11771-019-4244-y Analytical solutions of transient heat conduction in multilayered slabs and application to thermal analysis......
) with the latent heat released during the solidification of the molten, a model of inverse heat conduction based on the equivalent specific heat method was established. The effects of some parameters... because of the released latent heat. Key words: A356 Al alloy; latent heat released; equivalent specific heat method; inverse heat conduction; interfacial heat transfer coefficient 在铸造领域中,随着计算机模拟技术的不断进步和完善......
; (7) where λ and C are the thermal conductivity of the gaseous mixture, and the mixture heat capacity, respectively. C is combined specific heat capacity of the gas (CP) and particle (CS...J. Cent. South Univ. (2017) 24: 2638-2648 DOI: https://doi.org/10.1007/s11771-017-3677-4 Modeling multi regional counter flow combustion of lycopodium dust cloud with considering radiative heat loss......
外加磁场对纯金属比热影响的实验研究与计算何燕霖1,朱娜琼1,邵光杰1,邹楠1,李麟1(1.上海市上海大学材料科学与工程学院)摘 要:采用PPMS物性测量系统测定了纯Cu在不同磁场强度(0,3,6,9 T)作用下,2~300 K温度区间内的比热值以及纯Fe在0~9 T磁场强度范围内,5~300 K温度区间的等温磁化曲线.根据实验与计算结果可以看出,在强度为0~9 T的外加磁场作用下,纯Cu,纯Fe在所研究温度范围内的比热值基本无变化;在研究其固溶体或化合物在外加磁场作用下的自由能时,应当重在考虑磁场强度对其混合自......
J. Cent. South Univ. (2021) 28: 1775-1785 DOI: https://doi.org/10.1007/s11771-021-4661-6 Estimating model for urban carrying capacity on bike-sharing YU Jia-jie(余佳洁)1, JI Yan-jie(季彦婕)1, 2, YI Chen..., an estimating model was proposed to quantify the urban carrying capacity (UCC) for bike-sharing through the demand data. In this way, the maximum supply volume of bike-sharing that a city can accommodate can......
, uy and uz are the components of velocity vectyor; cP is the specific heat capacity; λ is the thermal conductivity coefficient; ST is the internal heat source. Stress-strain constitutive equation... energy generated by an average velocity gradient αK Volume fraction of phase K ρK Density of phase K mP Energy source term t Flow time of the fluid T Temperature of the material cP Specific heat capacity......
to become steady at about 30 min. The flat heat pipe radiator has a certain thermal capacity and the heat transfer coefficient of the natural convection between the fins and the surroundings is quite low. Decreasing the thermal capacity or increasing the heat transfer coefficient can shorten the required start-up time. It is also noted from Fig.4 that the temperatures reaching the steady state show......
]. The existing heat reflection insulators, which have very low insulation capacity, are inappropriate for use as the outer-wall insulators of buildings, and cannot protect life and property during... with their high insulation capacity, and are not harmful to the human body. Moreover, the existing insulators, such as Styrofoam, urea form, and the heat reflection insulator, have caused much damage to life......