排序方式: 共有8条查询结果,搜索用时 109 毫秒
1
1.
采用计算流体动力学CFD技术对某建材超市室内空气场形式进行数值模拟,预测了室内温度场、速度场以及浓度场,发现用散流器上送风,送风高度在5米左右时,送风温差在15K以上为宜,散流器垂直方向速度为3m/s时,人员的活动范围内的速度基本符合0.3m/s的要求,有污染物挥发时,通风安全系数应不小于9.验证了空调室内气流的动量传递、热量传递和质量传递的高度类似性. 相似文献
2.
二十一世纪是一个发展的时代,各个方面的发展速度都是空前的快速。在发展的同时,也就会出现一些问题,这其中包含了能源的问题,环境污染问题和人力问题。其中最重要的也就是能源问题。能源是发展的引擎,没有能源根本不可能发展。在现在这个能源缺乏,环境污染严重的年代各个发展的企业将目标放在了比较清洁的天然气。天然气的开采和管理也是非常复杂的,本文就对天然气场站控制系统进行浅析。 相似文献
3.
4.
ZHANG ShuiChang ZHU GuangYou CHEN JianPing LIANG YingBo 《科学通报(英文版)》2007,52(A01):113-124
In recent years several H2S-rich oolite giant gas pools have been discovered in the Lower Triassic Feixianguan Formation of the northeastern Sichuan basin, and their explored gas reserves have been over 5000×10^8 m^3. However, gas sources remain unsolved due to multiple source horizons with high maturity in this area and TSR alterations. By integrating analytical data of natural gas samples with conprehensive investigations on many factors, such as oil-gas geology, distribution and evolution of source rocks, charging and adjustment of gas pools, mixture of natural gases and secondery alterations, the present study concluded that the dominant source for the Feixianguan Fr. gas pools is the Permian Longtan Fr. source rock and secondly the Silurian Longmaxi Fr. source rock. Natural gases from the various gas pools differ genetically due to the matching diversity of seal configurations with phases of hydrocarbon generation and expulsion by different source rocks, among which natural gases in Puguang Gasfield are dominated by the trapped gas generated from the Longtan Fr. source rock and commingled with the gas cracked from the Silurian crude oil, while those in Dukouhe, Tieshangpo and Luojiazhai Gasfields are composed mainly of the Silurian oil-cracking gas and commingled with the natural gas derived from the Longtan Fr. source rock. 相似文献
5.
6.
7.
8.
1