河南商丘睢县位于华北平原南部，属温带季风气候，四季分明：夏季炎热，最高气温可达35℃以上，湿度偏低；冬季寒冷干燥，春季多风，秋季温和。在这样的气候条件下，生产车间的通风降温与空气质量成为保障工人舒适与生产效率的重要环节。

该鞋业公司是睢县规模以上重点企业，拥有从裁断、针车、成型、压底到包装的全套休闲鞋生产工艺流程。其厂房为多层钢筋混凝土标准结构，本次需进行通风降温改造的两个车间总面积约12000平方米，层高5.5米。车间按功能划分为裁料区、针车流水线、贴合组装区、质检包装区等，整体布局紧凑，属于典型的劳动密集型生产环境。车间内设备本身发热量小，主要热源来自近800名各岗位员工，涵盖裁断工、针车工、贴合工、流水线操作员、质检员、包装工及管理人员等。

瑞峰环保制冷的方案设计团队综合考虑了睢县干燥气候特点、厂房结构、车间面积大但地面可用空间有限、人员密集且分布均匀等因素，摒弃了占用地面面积的轴流式冷风机，最终选定大功率蒸发式冷风机＋风管均匀送风的系统方案。该设计通过管道将清凉空气精准输送至各工位，实现“岗位送风”，不仅节省空间，更大幅提升送风效率与覆盖均匀度。

系统投入使用后，车间温度明显降低，空气流通持续改善。尤为重要的是，蒸发式冷风机持续引入室外新风，在降温的同时实现室内外空气循环更新，有效提升空气质量，避免传统工业空调仅进行室内空气内循环导致的闷浊感。 工人长期作业的闷热感和疲劳感得到显著缓解，工作环境舒适度与空气清新度同步提升，从而有助于提高员工专注度与生产积极性，进一步减少了因高温导致的效率下降现象，为企业稳定生产提供了有力保障。

值得一提的是，该企业原计划投入较高成本安装工业空调。瑞峰专业人员从当地气候干燥、车间空气流通需求高的实际情况出发，指出蒸发式冷风机（环保空调）在降温的同时可适度增加空气湿度，并持续引入新鲜空气，更符合健康舒适的环境需求，且具有能耗低、投资少、维护简便等优势，整体性价比与空气品质管理效果显著优于纯内循环的工业空调方案，最终赢得客户的高度认可。

此案例充分体现了瑞峰环保制冷“因需设计、务实高效”的服务理念，以及在高大空间劳动密集型场所通风降温与空气质量管理方面的专业设计与实施能力。

Suixian County, Shangqiu, Henan Province, is located in the southern part of the North China Plain and has a temperate monsoon climate with four distinct seasons: hot summers with maximum temperatures exceeding 35°C and low humidity; cold and dry winters; windy springs; and mild autumns. Under such climatic conditions, ventilation and air quality in production workshops become crucial for ensuring worker comfort and production efficiency.

This shoe company is a key enterprise above a certain size in Suixian County, possessing a complete production process for casual shoes, ranging from cutting, sewing, molding, sole pressing to packaging. Its factory building is a multi-story reinforced concrete standard structure. The two workshops that require ventilation and cooling renovation this time cover a total area of approximately 12,000 square meters and have a floor height of 5.5 meters. The workshops are divided into functional areas such as the cutting area, sewing assembly line, bonding and assembly area, quality inspection and packaging area, etc. The overall layout is compact, belonging to a typical labor-intensive production environment. The equipment inside the workshops generates little heat, and the main heat source comes from nearly 800 employees in various positions, including cutting workers, sewing workers, bonding workers, assembly line operators, quality inspectors, packaging workers, and management personnel.

The design team for Ruifeng Environmental Protection's refrigeration solution comprehensively considered factors such as the dry climate characteristics of Suixian County, the structure of the factory building, the large workshop area but limited available ground space, and the dense and evenly distributed personnel. They abandoned the axial flow air cooler that occupies floor space and ultimately selected a system solution of high-power evaporative air cooler + uniform air distribution through ducts. This design precisely delivers cool air to each workstation through ducts, achieving "post-specific air distribution". It not only saves space but also greatly improves air distribution efficiency and coverage uniformity.

After the system was put into use, the temperature in the workshop was significantly reduced, and air circulation was continuously improved. More importantly, the evaporative air cooler continuously introduced outdoor fresh air, achieving indoor and outdoor air circulation and renewal while cooling down, effectively improving air quality and avoiding the stuffiness caused by traditional industrial air conditioning that only performs indoor air circulation. The workers' long-term work-related stuffiness and fatigue were significantly alleviated, and the comfort level and air freshness of the working environment were simultaneously improved, thus helping to enhance employees' concentration and production enthusiasm. This further reduced the efficiency decline caused by high temperatures, providing a strong guarantee for the stable production of the enterprise.

It is worth mentioning that the enterprise originally planned to invest a high cost in installing industrial air conditioning. Based on the actual situation of dry local climate and high demand for air circulation in the workshop, Ruifeng's professionals pointed out that evaporative air coolers (environmentally friendly air conditioners) can moderately increase air humidity while cooling, and continuously introduce fresh air, which is more in line with the demand for a healthy and comfortable environment. Moreover, they have advantages such as low energy consumption, low investment, and simple maintenance. The overall cost-effectiveness and air quality management effect are significantly better than the pure internal circulation industrial air conditioning solution, ultimately winning high recognition from the customer.

This case fully embodies the service philosophy of "design according to demand, pragmatic and efficient" of Ruifeng Environmental Protection and Refrigeration, as well as its professional design and implementation capabilities in ventilation and cooling, as well as air quality management for labor-intensive places with large and high spaces.