北京某商业内区免费供冷系统选用分析与设计  

Selection analysis and design of free cooling system in a Beijing commercial inner area

作　　者：李含 Li Han

机构地区：[1]北京金茂绿建科技有限公司

出　　处：《洁净与空调技术》2024年第3期83-87,共5页Contamination Control & Air-Conditioning Technology

摘　　要：随着国家“双碳”政策的实施,建设节能低碳、绿色生态、集约高效的建筑用能体系,具有重要的现实意义和深远的战略意义。基于北京通州一大型商业综合体项目,对进深较大且余热较大的内区,在冬季或室外气温较低的过渡季,从充分利用室外新风,以及冷却塔供冷两个方面,分析了免费制冷系统选用依据。在不增加耗热量的前提下,适当增大新风量,并解决好低温送风问题。优先利用新风系统为商业内区部分店铺实现免费供冷;对采用新风免费供冷的方法仍不能消除内区余热的店铺,采用冷却塔免费供冷系统。描述了冷却塔免费制冷的设计方法:主要参数选取、设备配置以及系统设计计算等过程,并提出系统设计中需要注意且容易忽视的自控要点。为同类项目免费制冷系统选用、设计提供借鉴参考。With the implementation of the national"dual carbon"policy,the construction of energy-saving,low-carbon,green ecology,intensive and efficient building energy system,has important practical significance and far-reaching strategic significance.based on a large-scale commercial complex project in Tongzhou,Beijing,.For the inner area with large depth and large waste heat,in winter or the transition season with low outdoor temperature,analyzes the selection basis of free refrigeration system,from the two aspects of making full use of outdoor fresh air and cooling tower cooling.Under the premise of not increasing heat consumption,appropriately increasing the fresh air volume and solving the problem of low-temperature air supply.Priority use of fresh air system for some stores in the commercial inner area;For the stores that still cannot elimination of waste heat in the inner area by using the free cooling of fresh air,the free cooling of cooling toweris adopted.Describes the design approach for free cooling of cooling tower:main parameter selection,equipment configuration and system design calculation process,propose the self-control points that need attention and are easy to overlook in system design.Provide reference for the selection and design of free refrigeration systems of similar projects.

关 键 词：商业综合体 新风免费供冷 冷却塔免费供冷 湿球温度 供冷小时数 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]