| 1. |
- Li, Liangxing, et al.
(författare)
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Dynamic characteristics of molten droplets and hot particles falling in liquid pool
- 2010
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Ingår i: Frontiers of Energy and Power Engineering in China. - : Springer Science and Business Media LLC. - 1673-7393 .- 1673-7504. ; 4:2, s. 246-251
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Tidskriftsartikel (refereegranskat)abstract
- The dynamic characteristics of molten droplets and hot particles at the very beginning of their fall into coolant pools are presented. The falling course of a single droplet or a single hot particle was recorded by a high-speed camera and a curve of velocity vs. time was obtained. Emphasis was placed on the effects of the droplet's size and temperature, the coolant's temperature and properties, and the droplet's physical properties on the moving behavior. The results for the all cases showed that the velocity of a falling droplet/particle decreased rapidly but rebounded shortly, at the beginning of droplet/particle falling in the coolant. Following such a V-shaped evolution in velocity, the droplet/particle slows down gradually to a comparatively steady velocity. An increase in either coolant temperature or droplet temperature results in a larger velocity variation in the "J-region", but a smaller deceleration when it moves out of the "J-region". The elevated volatility of a coolant leads to a steeper deceleration in the "J-region" and beyond. The bigger size of a particle leads to a greater velocity variation in the "J-region" and terminal velocity. A high melting point and thermal conductivity as well as lower heat capacity contribute to dramatic variation in the "J-region" and low terminal velocity.
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| 2. |
- Wang, Weilong, et al.
(författare)
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Combined heat and power plant integrated with mobilized thermal energy storage (M-TES) system
- 2010
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Ingår i: Frontiers of Energy and Power Engineering in China. - : Springer Science and Business Media LLC. - 1673-7393 .- 1673-7504. ; 4:4, s. 469-474
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Tidskriftsartikel (refereegranskat)abstract
- Energy consumption for space and tap water heating in residential and service sectors accounts for one third of the total energy utilization in Sweden. District heating (DH) is used to supply heat to areas with high energy demand. However, there are still detached houses and sparse areas that are not connected to a DH network. In such areas, electrical heating or oil/pellet boilers are used to meet the heat demand. Extending the existing DH network to those spare areas is not economically feasible because of the small heat demand and the large investment required for the expansion. The mobilized thermal energy storage (M-TES) system is an alternative source of heat for detached buildings or sparse areas using industrial heat. In this paper, the integration of a combined heat and power (CHP) plant and an M-TES system is analyzed. Furthermore, the impacts of four options of the integrated system are discussed, including the power and heat output in the CHP plant. The performance of the M-TES system is likewise discussed.
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