溶液除湿空调系统模拟方法及应用

溶液除湿空调系统由于在改善室内空气品质、利用低温余热、高效蓄能和可实现温、湿度独立控制等方面的突出优点，已经引起广泛的关注，并逐渐应用于工程实践中。本文以上海某生态示范建筑中采用的热泵驱动的溶液除湿空调系统为例，介绍了这种系统的工作原理，并建立了系统模拟的数学模型。通过模拟结果与实测结果的比较，验证了数学模型的可靠性，并应用系统模型对溶液除湿新凤机和再生器的性能进行了深入分析。     

Endogenous growth of a Miocene submarine dacite cryptodome, Rebun Island, Hokkaido, Japan

Momo-iwa, Rebun Island, Hokkaido, Japan, is a dacite cryptodome 200–300 m across and 190 m high. The dome is inferred to have intruded wet, poorly consolidated sediment in a shallow marine environment. The internal structure of the dome is concentric, with a massive core, banded rim, and narrow brecciated border, all of which are composed of compositionally uniform feldspar-phyric dacite. Boundaries between each of the zones are distinct but gradational. The massive core consists of homogeneous coherent (unfractured) dacite and is characterized by radial columnar joints 60–200 cm across. The banded rim encircles the massive core and is 40 m wide. It is characterized by large-scale flow banding parallel to the dome surface. The flow banding comprises alternating partly crystalline and more glassy bands 80–150 cm thick. The outermost brecciated border is up to 80 cm thick, and consists of in situ breccia and blocky peperite. The in situ breccia comprises polyhedral dacite clasts 5–20 cm across and a cogenetic granular matrix. The blocky peperite consists of polyhedral dacite clasts 0.5–2 cm across separated by the host sediment (mudstone). The internal structures of the dome suggest endogenous growth involving a continuous magma supply during a single intrusive phase and simple expansion from the interior. Although much larger, the internal structures of Momo-iwa closely resemble those of lobes in subaqueous felsic lobe-hyaloclastite lavas.     

热泵在多年冻土地区工程中的应用

The inclement climate and permafrost have a strong influence on human activities and life in cold regions. It is important to adjust to these conditions in such a way as to minimize adverse environmental impacts. In order to maintain the ecological equilibrium, various technologies have been developed which involve the use of the natural cold for solving difficult engineering problems. Heat pumps hold much promise in this context. They can help protect the environment from the thermal effects of human activities and, unlike the conventional refrigeration devices; the produced heat can be utilized. They also provide a solution to another problem vitally important for the northern regions - saving of fuel and energy resources. In case of global warming with an increasing need for artificial refrigeration, the use of heat pumps will be the most economical solution, preventing catastrophic loss of structural stability virtually without additional costs.     

地源热泵技术及其发展

地源热泵主要由四个部件组成：即压缩机，冷凝器，膨胀器和调节阀，而地热泵系统的设计主要包括地上和地下系统的设计，地下系统有开放式，封闭式和混合式三种，可根据实际情况来选择；地上系统的设计主要有风机盘管,地板式采暖系统，混合散热系统和中央空调系统的设计。     

结构控制新系统MDS的研究

文章提出新型控制系统MDS（Mass Damper System），并分别用被动控制和半主动控制方法进行深入研究，结果证实，MDS是一种较好的控制系统。     

Overview of NOPACCS (Northwest Pacific Carbon Cycle Study)

The Northwest Pacific Carbon Cycle Study (NOPACCS) was a program aimed at investigating the carbon cycle of the North Pacific Ocean, which can be thought of as a large reservoir of carbon dioxide. NOPACCS was also aimed at estimating the North Pacific's capacity as a carbon sink. Project design, scientific results, and data availability, and subsequent projects resulting from this project are also described in this review. Studies of the upper ocean processes focused on the latitudinal differences in the fugacity of carbon dioxide; and on the detail of plankton community structures. Intermediate water was studied in relation to the formation of North Pacific Intermediate Water and the amount of accumulated anthropogenic carbon. The sedimentation process, past carbon cycle and coral reefs were also studied during the project. A preliminary, overall view of the carbon cycle of the North Pacific was drawn from the results of the project and compared to global values.     

Design and analysis of an innovative deep-sea lifting motor pump

The lifting motor pump is the core equipment of the deep-sea hydraulic pipeline lifting system, and its research results are one of the important technical reserves for the research and development of marine mineral resources. It is an essential capacity for lifting motor pump to allow coarse particles pass through the flow passages, to realize this requirement, an increased flowrate method is employed to design a wide flow passage for an innovative six-stage lifting motor pump. Based on Computational Fluid Dynamics (CFD), the anti-blocking performance of the lifting motor pump designed by the conventional method and the increased flowrate method are compared, which show that the latter is better than the former. Numerical simulations of the internal two-phase flow inside the innovative pump are presented, and the flow parameters such as pressure, velocity and particle trajectory are obtained. According to the design method of the six-stage lifting motor pump, a two-stage lifting motor pump is manufactured, and the relevant performance experiments are performed. The results obtained by numerical simulation is in a good agreement with the experimental ones, thus the validity and accuracy of the numerical model and method is verified. The innovative two-stage lifting motor pump can operate smoothly with low noise and no blockage occurs, and its performance meets the design goals and requirements.     

庆云县地热回灌存在问题浅析

如何实现地热资源合理开发、高效利用,实现地热资源采灌均衡可持续开发利用模式已成为地热资源开发利用地区重点研究内容。该文根据庆云县某典型小区(以下简称小区A)一个采暖季的开采、回灌监测数据,总结了水温、开采量、回灌量、水位及回灌率变化情况。通过数据分析及调查可知,庆云县回灌工程普遍存在地热尾水温度偏高、热利用效率偏低、地热尾水直接回灌引起管道腐蚀影响供暖效果等问题。针对地板辐射和暖气片采暖两种模式提出了换热技术和增加热泵机组的改进措施建议,既可提高热利用效率,又可保证供暖效果避免设备腐蚀,对庆云县地热供暖工程的升级改造具有一定的指导意义。     

西安城区地下水源热泵利用现状评价与可持续发展对策研究

通过调查统计西安城区水源热泵系统历史运行数据,对水源热泵系统用户分布、运行现状及回灌率等内容进行了评价,系统分析了水源热泵系统运行过程中存在的问题,从制度建设、行政监管、水资源税征收及技术创新等方面进行分析,提出应通过建立健全水源热泵系统运行管理规定、建设高效智能的水源热泵运行监管平台、充分发挥水资源税征收的奖惩机制和强化创新研究,着重解决可持续回灌技术瓶颈等策略,保证西安城区水源热泵系统的可持续利用和发展。     

套管式地埋管换热器热短路及换热性能

套管式地埋管换热器是深层地源热泵系统常用的换热装置。基于流体流动换热方程,建立套管式地埋管换热器与周围岩体之间的传热模型。以第一个供暖季为例,分析内管导热系数和循环水流量对换热性能的影响,并引入换热器效能对热短路现象进行评估,研究结果显示:内管导热系数越大,热短路现象越显著;热短路使内外管中循环水温差降低,管内出现热堆积,导致换热器换热功率降低;套管式地埋管换热器的换热功率随循环水流量的增大逐渐增大;内外管之间存在热短路时,出口水温随循环水流量的增大先升高后降低,随着流量增大,换热器效能增大。研究成果可为深层地源热泵系统中地埋管换热器的设计提供借鉴。