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Opportunistic network mobile user-nodes location prediction can help to collect the data, improve the dynamic network and help to decrease the problems which include the delay, low success rate, high storage space energy consume and so on, which are the results of the blindness in the process of delivery. In this paper, a mobile node location prediction algorithm base on the Multi-Order Markov prediction...
In order to distinguish the change-point of hydrological process accurately, this paper adopted the annual runoff series data for 60 years of the hydrological monitoring stations of the Yingluoxia in Heihe river basin during 1947 to 2006. Difference plot curve-combined method of rank test is used to identify the change-point of hydrological process, which combined with Brown-Forsythe method, sequential...
Through simulating the process of energy storage heating floor contain phase change material (PCM), the action and function of PCM in building energy storage are discussed. Analysis and numerical simulation the energy storage process in building structure with PCM packaging module, discussion the relation of temperature distribution, heat condition, energy storage and discharge time and PCM efficiency...
In this paper numerical simulated the thermal properties of solar air collector. With the ray-tracing solar load model provided by Fluent software, the solar radiation heat flux can be solve using radiation heat transfer equation, and then consider loading radiation heat into the source terms of the energy equation. The thermal effects rules of air flow and heat transfer in the collector box, temperature...
This paper adopts the method of Fluent software simulation and simulates research the thermal performance of a solar air collector's with porous and fold lined. Changes in the structure of the collector plates whether the openings, folded plate and the plate hole collector aspects to impact performance are discussed. In order to have comparable, to simulate in the intensity of solar radiation, wind...
Of a placement at the roof of a building using solar collectors to heating the air thermal properties were studied. Introduction a unit of the air flowing through the solar radiation collector temperature rise that characterized the parameters of a combination of collector, through measuring the thermal performance of the relevant factors of collector, such as outlet temperature, export air speed...
On the base of the getting best action of the phase change material (PCM) properties, a new radiant heating structure of the energy storage floor by solar hot water is designed, which was to put heat pipes in PCM layer, without concrete in it. The PCM thermal storage time is mainly studied when the floor surface temperature is admired under different low-temperature hot water temperatures. With the...
A grid system is a dynamic and distributed environment which contains mass entities and resources, and is involved in large-scale data exchanges and resource sharing. Thus in grid system, information security is a prime concern. Trust mechanism is a main part of grid security. Taking the fuzziness of behavior trust into consideration, this paper introduces fuzzy theory to grid trust and proposes a...
In this article, the heat model with solar panel composite wall structure was set up. simulation on heat resistance of solar composite wall was carried out, associated with three air flow patterns which refer to stillness, natural convection and forced convection, and compared with common wall without solar panel. It was found that the conditioning load was decreased remarkably due to the wall's reducing...
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