干旱区生态环境知识资源中心(Arid): Large climate-moderating envelopes for enclosed structures: a preliminary evaluation of energy conservation potential

Arid

DOI	10.2172/5269691
报告编号	ORNL/TM-8018
来源ID	OSTI_ID: 5269691
	Large climate-moderating envelopes for enclosed structures: a preliminary evaluation of energy conservation potential
	Wendt, R.L.; Giles, G.E.; Park, J.E.
英文摘要	An investigation was made of the basic impacts of putting a large secondary enclosure around a number of functions and thereby creating a Large Climate Moderating Envelope (LCME). This study is a preliminary estimate of the energy conservation benefits of an LCME. A hypothetical LMCE design was chosen and a coupled fluid dynamic and energy transport analysis was performed to estimate the energy conservation potential of this design. The heat transfer models included insolation, outside air temperature and wind, thermal radiation exchange with the sky, and between the fabric and ground and thermal storage in the earth mass beneath the LCME. The energy transported within the fluid by the buoyancy driven circulation was modeled as an incompressible fluid utilizing the Boussinesq approximation. The climatic conditions were assumed to vary in smooth repeating daily cycles. The numerical simulation of climatic variation was continued until the results within the LCME achieved a repeating daily cycle. The results for selected seasonally characteristic days were utilized to estimate the annual energy consumption of structures within an LCME relative to similar structures exposed to the exterior environment. The relative annual energy savings for summer-dominated climates was estimated to be approx. 70%. The energy savings for a winter-dominated climate LCME were estimated to be somewhat smaller but the LCME concept could offer significant benefits for agricultural applications for this type of climate.
出版年	1981
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ; BUILDINGS ; COVERINGS ; DOMED STRUCTURES ; ENERGY CONSUMPTION ; HEAT TRANSFER ; MATHEMATICAL MODELS ; MICROCLIMATES ; AIR ; AIR FLOW ; DAILY VARIATIONS ; DEGREE DAYS ; DOUBLE ENVELOPE BUILDINGS ; ENERGY CONSERVATION ; ENVIRONMENTAL IMPACTS ; FIBERS ; HYDRODYNAMICS ; PHYSICAL PROPERTIES ; SEASONAL VARIATIONS ; SIMULATION ; SOILS ; TEMPERATURE DISTRIBUTION ; CLIMATES ; ENERGY TRANSFER ; FLUID FLOW ; FLUID MECHANICS ; FLUIDS ; GAS FLOW ; GASES ; MECHANICAL STRUCTURES ; MECHANICS ; VARIATIONS 320100* -- Energy Conservation, Consumption, & Utilization-- Buildings ; 320600 -- Energy Conservation, Consumption, & Utilization-- Municipalities & Community Systems-- (1980-)
URL	http://www.osti.gov/scitech/servlets/purl/5269691
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/263187
推荐引用方式 GB/T 7714	Wendt, R.L.,Giles, G.E.,Park, J.E.. Large climate-moderating envelopes for enclosed structures: a preliminary evaluation of energy conservation potential,1981.