你瘫在家里，舒服地吹着空调，突然得出门一会儿。掐指一算：就出门两三个小时，这空调，关还是不关？ 关吧，那回来后家里很热，而且，听说短时间反复开关空调更费电。 不关吧，家里没人还开着空调，多少是有点浪费钱了。 所以，到底怎样做才省钱呢？ 先算算电费吧 空调可以分为定频空调和变频空调。 定频空调，它的压缩机一会儿开、一会儿关，所以运行功率是一会儿低到可以忽略，一会儿稳定地高，一段时间内的耗电量是恒定的，功率曲线像城墙垛 子。 所以，你离家开着定频空调，它运行模式不变；你出门关了定频空调、回家后又打开，它运行模式还是一排城墙垛子，额外耗电不会增加太多。 一句话，为了省电费，定频空调，出门就关。 变频空调，压缩机的功率是可以改变的，是一根曲线：刚启动时耗电多，是一根陡峭向上的曲线；运行一会儿后耗电变少，是一条又低又平缓的小波浪 线。 所以，离家时候让空调继续运行，耗费的电也不多；出门关了、回家再开，反而在启动阶段会用掉更多电。 一句话，为了省电费，变频空调，短时间出门不用关。 来画个图再看看： t1 是离家时间点； t2 是回家开空调时间点； 以下结论建立在这些前提下： 离家时间为两三个小时左右；房间保温效果较好；室 ...

瑞鹄模具：上半年净利润2.27亿元 同比增长40.33% 7月22日，纳尔股份（002825）发布公告称，公司与江西蓝微电子科技有限公司及相关方于2025年1月20 日签订的《投资意向协议》因未能在排他期内达成正式协议，已于2025年7月20日自动终止。公告显 示，纳尔股份原拟受让蓝微电子部分股权，并对蓝微电子增资的方式持有蓝微电子不低于51%的股权， 取得目标公司的控制权。 资料显示，纳尔股份成立于2005年11月，主营业务是精密涂布业务领域的数码喷印材料、汽车保护膜、 光学及电子功能膜材等产品的研发、生产和销售。 7月22日，瑞鹄模具（002997）发布2025年半年度报告，公司上半年实现营业收入16.62亿元，同比增长 48.3%；实现归属于上市公司股东的净利润2.27亿元，同比增长40.33%。 资料显示，瑞鹄模具成立于2002年3月，主营业务是汽车制造装备业务及汽车轻量化零部件业务。 所属行业：汽车–汽车零部件–其他汽车零部件 东方财富：股东沈友根询价转让定价为21.66元/股 7月22日，东方财富（300059）发布公告称，公司股东沈友根的询价转让初步确定的转让价格为21.66 元/股。本次询价转 ...

在AI技术带来的智能化浪潮中，楼宇建筑成为可呼吸的"智能生命体"的科学幻想，正在照进现实生活。 2 0 2 5年一季度营收9 9亿元，同比增长超过2 0%，作为美的集团（0 0 0 3 3 3 .SZ）旗下增长最快 的业务板块之一，楼宇科技事业部正在经历一场深刻的商业模式变革。从最初的中央空调业 务起步，如今已发展成为涵盖暖通、电梯、智能化系统楼宇控制、能源管理核心业务的建筑 综合解决方案服务商。 自2 0 2 1年正式更名"楼宇科技"后，目前该事业部年营收规模接近3 0 0亿元，其中海外业务占比 高达4 5%，成为美的国际化战略的重要支撑点。 作为智慧空间市场的引领者，美的楼宇科技在外资企业占据优势的楼宇自控市场中如何创新 突围？又如何结合自身的制造技术、AI技术优势打破软硬件割裂与服务断点？进而引领建筑 行业从碎片化创新走向整体价值重构？ 战略升维： 从卖设备到运营智慧空间 走进位于上海市青浦区的上海美的全球创新园区（简称"上海美创项目"），眼前的景象颠覆 了人们对于传统工业园区的刻板印象。 两座L形的塔楼坐落在森林般的绿意之上，光伏板在屋顶闪烁着微光。在办公室、会议室中， 灯光和空调会自动感知人的需求， ...

2020年3月，美的集团正式宣布，全球创新园区落户上海计划启动，拟以全新姿态完成从"白电龙头"到"科技巨头"的蜕变。 同年12月，美的集团以底价18.36亿元，成功竞得上海西虹桥一宗商办用地。 2025年6月，历时5年，承载人工智能、新能源、智能制造、智慧医疗、智慧物流等领域研发重任的美的全球创新园区正式竣工启用，总投资超过70亿元。 该园区定位为美的继广东顺德总部后的第二个国内全品类研发中心，未来可容纳8000至10000名科研人员，聚焦人工智能、大数据、智慧能源等前沿技术研 发，与美日德意等30余个全球研发中心形成"2+4+N"创新网络。 这也意味着，美的全球研发体系的全面升级。 （文/张志峰 编辑/周远方） 企业2025年一季度财报显示，美的集团楼宇科技业务收入同比增长20%，成为增长最快板块之一。 悬空双塔与绿色技术 "我们希望员工在工作中犹如置身于森林之上，感受科技带来的便捷与自然的宁静。" 美的集团上海园区办公室总监许宁说。 上海美的全球创新园区的设计理念为"森林之上，科技之城"，旨在打造一个融合自然与科技的未来园区。建筑主体采用钢结构体系，通过 14 个核心筒支撑 起两栋L型塔楼，形成连续200 ...

转自：新华财经 前段时间，顾桥矿井下—707m装载硐室空气冷却器正式运行。该设备利用冷凝原理和潜热原理来实现 空气的冷却，制冷效果较好。"自从空气冷却器安装了以后，巷道整体温度下降了大约6至7℃，与之前 相比，我们的体感舒适度提高了不少，在炎炎夏日也能享受到丝丝清凉。"绞车一队职工关磊高兴地 说。 在中央区副井、深部灾害治理巷、南翼一部皮带机巷等地点安装6套二氧化碳制冷除湿一体机。改造北 一13—1轨胶二联巷、—850m瓦斯治理巷、东一（1）11—2轨道上山"卡脖子"管路。在高温头面设置采 用压风作为动力的冰箱、涡流降温装置等，巧妙规避传统电力制冷设备的安全风险，实现了制冷"零电 耗、零污染"。 "热害不治，矿无幸福。"今年以来，安徽省淮南矿业集团顾桥矿深入践行淮河能源集团家文化理念，以 系统优化为保障、机械制冷为核心、个体防护为补充，狠下决心，采取综合防治措施，系统性、多层次 做好井下制冷降温工作，努力为职工创造安全的工作环境。 优化系统，源头治理热害 顾桥矿通过优化通风系统、更换大功率风机或增设辅助风机，在合理范围内增加工作面的供风量，利用 风流直接带走热量。"我矿在对北二回风巷进行巷修，扩大断面的同时， ...

Group 1: Company Overview and Product Offerings - The company focuses on providing advanced system solutions and lifecycle services in the energy and power sectors, with products including compressors and heat exchangers, covering a temperature range of -271°C to 200°C [2]. - The company has developed a full range of magnetic levitation compressor products, showcasing significant technological advantages and market performance, particularly noted during the Beijing Winter Olympics [2]. - The company participates in drafting national standards for centrifugal refrigerant compressors and oil-free suspended centrifugal chillers [2]. Group 2: Applications in Data Centers - The company’s subsidiaries provide cooling equipment for data centers, including variable frequency centrifugal chillers and integrated natural cooling function air-cooled screw chillers, which are listed in the Ministry of Industry and Information Technology's directory of advanced applicable technologies for national green data centers [2]. - Successful projects include major data centers for national supercomputing and various banks, with ongoing collaborations in North America, Australia, Southeast Asia, and the Middle East [2]. Group 3: Nuclear Power Industry Products - The company has developed innovative technologies for nuclear power applications, focusing on core scenarios such as nuclear island cooling and heat recovery [3]. - It has supplied products to several nuclear power stations in China, including Hongyanhe and Ningde, and is recognized for its extensive experience in the nuclear refrigeration market [3]. Group 4: Industrial Heat Management - The company is a pioneer in industrial heat pump technology, promoting a comprehensive solution for industrial heat control that integrates multi-source and multi-level system technologies [4]. - The subsidiary Beijing Huayuan Taime Energy Equipment has been recognized as a national-level specialized "little giant" enterprise, holding 96 patents and 33 software copyrights [4]. Group 5: Marine Economy Product Layout - The company is committed to high-quality development in the marine economy, providing comprehensive smart solutions for the fishing and seafood processing industries [5]. - Recent innovations include low-carbon energy systems for ships and offshore platforms, aligning with national low-carbon and intelligent development needs [5].

Group 1 - The core viewpoint of the articles highlights the rapid growth and strategic positioning of HeKang New Energy Technology Co., Ltd. in the green energy sector, particularly in energy management and storage solutions [1][2] - HeKang New Energy has achieved a revenue of 3.915 billion yuan in 2024, marking a year-on-year increase of 512.04%, with this revenue constituting 81.98% of its total operating income [1] - The company has successfully turned a profit due to the high growth of its photovoltaic EPC business, recovery in the profitability of its high-voltage inverter business, and effective cost management [1] Group 2 - Guotou Securities has initiated a "buy" rating for HeKang New Energy, citing the company's strong backing from Midea Group, which is expected to enhance its overseas business development [2] - The company is focusing on three main areas: high-voltage inverters, distributed photovoltaic EPC, and household energy storage, which are expected to benefit from Midea Group's comprehensive support [2] - HeKang New Energy's high-voltage inverter business is operating steadily, with a rich product matrix and orderly capacity expansion, while its new energy business is significantly scaling up [2]

上天天基金APP搜索【777】注册即可 领500元券包，优选基金10元起投！限量发放！先到 先得！ 今年以来，险资密集调研上市公司，为中长期投资蓄力。 Choice数据显示，截至7月16日，险资（包括保险公司和保险资管公司）今年以来合计调研A股上市公 司超9800次，涉及超1400家公司。 其中，高股息和科技成长板块是其关注的重点。 关注"高股息+科技成长" Choice数据显示，截至7月16日，共有超190家险资机构对超1400家A股上市公司进行了9800余次调研。 从险资调研频率来看，泰康资产参与调研次数最多，今年已调研上市公司近600次，合计涉及近430只个 股。华泰资产调研上市公司次数超400次，共涉及超330家公司。此外，大家资产、人保资产、新华资产 等险资机构的调研次数均超300次。 高股息和科技成长板块成为险资调研的重点。电子、医药生物、机械设备、计算机等行业上市公司获得 险资调研次数较多。 其中，最受险资关注的个股是机械设备行业的汇川技术，今年以来获得超80家（次）险资调研。 汇川 技术主要为设备/产线/工厂自动化提供变频器、伺服系统、PLC/HMI/CNC、工业机器人、高性能电机、 精密机械 ...

Group 1: Company Overview and Product Offerings - The company focuses on providing advanced system solutions and lifecycle services in the energy and power sectors, with products including compressors and heat exchangers, covering a temperature range of -271°C to 200°C [2] - The company has developed a full range of magnetic levitation compressor products, showcasing significant technological advantages and market performance, particularly highlighted during the Beijing Winter Olympics [2] - Key industries served include food freezing and refrigeration, chemical production, industrial cooling systems, and special air conditioning for data centers and clean rooms [2] Group 2: Innovations in Nuclear Fusion and Low-Temperature Applications - The company successfully developed a helium compressor for superconducting magnets used in nuclear fusion devices, filling a domestic gap and supplying to major national research projects [2][4] - The helium compressor is part of a large low-temperature refrigeration system capable of achieving near absolute zero temperatures, essential for advanced scientific research [2] Group 3: Data Center Solutions - The company’s subsidiaries provide cooling equipment for data centers, including variable frequency centrifugal chillers and integrated natural cooling systems, which have been recognized in the national green data center technology directory [3] - Successful projects include collaborations with major data centers across China and partnerships with local integrators in North America, Australia, Southeast Asia, and the Middle East [3] Group 4: Nuclear Power Industry Applications - The company has developed innovative technologies for nuclear power cooling and heat recovery, supporting the safe and efficient operation of nuclear power plants [4][5] - Recent projects include providing cooling solutions for multiple nuclear power stations in China, enhancing the reliability and efficiency of nuclear energy utilization [4] Group 5: Industrial Heat Management Solutions - The company is a pioneer in industrial heat pump technology, focusing on creating comprehensive heat control solutions that integrate multi-source and multi-level system technologies [6] - The company has been recognized for its innovative technologies, including a national champion product in absorption heat exchangers and various patents in energy recovery and utilization [6]

Group 1: Company Overview and Product Offerings - The company focuses on providing advanced system solutions and lifecycle services in the energy and power sectors, with products including compressors and heat exchange devices, covering a temperature range of -271°C to 200°C [2] - The company has developed a full range of magnetic levitation compressor products, showcasing significant technological advantages and market performance, particularly in the Beijing Winter Olympic Village project [2] - Key industries served include food freezing and refrigeration, chemical production, rail transportation, and data centers, among others [2] Group 2: Innovations in Nuclear Fusion Technology - The company has successfully developed helium compressors for superconducting magnets used in nuclear fusion devices, filling a domestic gap since 2016 [2] - The helium compressor is critical for maintaining the cooling cycle and ultra-low temperature environment required for superconducting magnets [2] - The company’s helium compressors are included in the first batch of major technological equipment projects recognized by the National Energy Administration [2] Group 3: Data Center Applications - The company’s subsidiaries provide cooling equipment for data centers, including variable frequency centrifugal chillers and integrated natural cooling systems [3] - Products have been successfully implemented in numerous high-profile data centers across China and internationally, including partnerships in North America, Australia, and Southeast Asia [3] - The company is expanding its overseas manufacturing base to meet growing demand [3] Group 4: Nuclear Power Industry Solutions - The company has developed innovative technologies for nuclear power cooling and heat recovery, focusing on core scenarios such as nuclear island cooling and energy supply [4] - It has provided services to multiple nuclear power stations in China, enhancing safety and efficiency in energy utilization [4] - The company is recognized for its comprehensive range of cooling solutions applicable in various nuclear power environments [5] Group 5: Industrial Heat Management - The company is a pioneer in industrial heat pump technology, promoting a clean, low-carbon, and efficient energy system in line with national dual carbon strategies [6] - It has launched comprehensive industrial heat control solutions, integrating multi-source and multi-level system technologies [6] - The company’s subsidiary has been recognized as a national-level specialized and innovative "little giant" enterprise, holding numerous patents and awards for its technologies [6]