Thereby,in this text the experimental investigation has been done,and both a promising results and design method for this single stage G M refrigerator with high cooling capacity have been obtained,too.
The applications of long lifetime spaceborne cooling technology usd in aerospace infrared remote sensors are summarized. Its status and trend are analyzed: they are much more cooling capacity,much long lifetime and higher reliability. The developing direction and application prospects of spaceborne cooling technology in domestic are discussed.
The throttling process accompanied with pre-cooling makes use of the cold energy of the saturated superfluid helium vapor of 1.8 K and the liquid ratio of this method can increase 12% compared to direct throttling method.
Under the conditions of experiments, the capacity of ice cool storage charged is 1.59～2.10 lar ger than that of HCFC 141b gas hydrate. By contraries, the rate of cold energy stored of gas hydrate is about 6 666.7 kJ/h, which is 1.62 times of that of ice cool storage.
The feasibility of using KDON-6000/6000-Ⅶ oxygen generator for extracting liquid nitrogen products is quantitatively analyzed from the point of cold quantity equalibri-um. The ways and experience for equipment transforming and the obtained better economic benefits are summarized.
It mainly utilizes the moving characteristics of either the show heat of water or the latent heat of the phase turn process of water and ice,and stores cold by full using the low ebb electricity of electric wire netting,and release the cold quantity in the power consuming peak period,so as to relax the electric imbalance between supply and demand at the peak section of electric wire netting and achieve the purpose "more peak full out valley".
It was found that a refrigerating extent from 7.5 ℃ to 15 ℃ could be obtained in the ammonia-synthesis system with a moderate operating pressure. To benefit from lower energy consumption and production cost, the refrigeration working procedure in the present ammonia-synthesis system could be replaced by exploiting the self-generating refrigerating effect from the throttling effect of liquid ammonia, as well as some techniques of cold quantity reclaiming and energy saving.
The ethylene loss of the 650,000t/a ethylene plant of YPC is too much due to low efficiency of tertiary refrigeration system which can not provide cold box and demethanizer system with sufficient cold capacity in addition to some unreasonable operating control indexes.
To reduce energy consumption of air conditioning system,integral control of manual cold resource and workshop climatized room of air conditioning system in textile enterprises was researched,total cold capacity of textile workshop was considered as main control condition,bulk control of refrigeration water system,cooling water and air conditioning blast system was done through adopting frequency control technology and control calculation based on dynamic energy matching rule. These measures can not only satisfy processing demands,but also reduce energy consumption of air conditioning system.
Simultaneous analysis is made of the calculation results and experimental data on the cooling capacity of the microchannel system.
A study of the operating conditions and power performance characteristics of power units upon increasing the cooling capacity of
The effect from increasing the cooling capacity of chimney-type cooling towers obtained by installing built-in rotary vertical panels instead of the existing louver-type devices is evaluated.
A graphical algorithm for determining the cooling capacity of the secondary cooling zone is presented, and a nomogram for calibration of the cooling capacity of forced secondary cooling against the major and minor radii of an SCCM is developed.
However, the cooling capacity of superfluid helium is often deteriorated due to the appearance of the vapor phase, even boiling.
The expression for the "cold energy" is interpolated within the compression interval 0.9 ≤ δ ≤ 2.0 in such a way that the cold pressure and the square of the velocity of sound would be polynomials of powers δ-1.
Cold energy from the HTF is stored inside the capsules by sensible heat until the PCM reaches its freezing temperature.
Expanding the use of cold energy is our future task by taking notice of the fact that long wave radiation is a heat sink.
Since then the seasonal storage was used to store cold energy for summer cooling.
This paper defines the operating mode mentioned in section 1.1 as Mode 1, and Mode 2 refer to only storing heat and no storing cold energy.