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在寒冷天气下,能源增产保供工作成为重中之重,但热泵技术应用过程复杂,在一些商用建筑运行中,难以满足用户需要更抗冻、更节能的热泵供暖方案的需求,也未能提供成本更低、运行更稳定,且符合低碳发展的模式。什么样的方案才能将降本提效和绿色低碳融合发展?海尔智慧楼宇给出了答案。

在原创科技创新的推动下,海尔智慧楼宇推出行业首个高温热泵蓄热供暖方案,并在石家庄北国·未来城项目中得到应用。目前,该方案实现了系统造价减少190万、运行电费节省18%、电力容量需求减少39%、占地面积减少35%,将降低成本、提升效率、绿色转型落到实处,为低碳建筑提供了实践样板。

降本提效,谷电蓄热保障供暖

提升资源利用效率、降低运行成本,是诸多领域对热泵方案的需求,如石家庄北国·未来城项目。作为商业综合体,该项目投资成本、安装空间受限、电力容量不足的三大问题,制约了常规低温模块方案设计,如何低碳高效的实现供暖效果,成为用户迫切的需求。

用户在考察市场中其他应用案例后,找到了海尔智慧楼宇。最终,项目方选择了以高温复叠热泵、蓄热水箱为热源的定制化方案,在谷电时段进行蓄热,在非谷电时段蓄热释放+热泵供热,充分利用峰谷电价差,实现样板节能运转。

在定制化方案中,蓄热水箱实施供回水温度设计,设计蓄热最高不超过80℃,以实现复叠热泵能效、减少汽化、减少热损失的效果。并且,蓄热水箱选用温度自然分层式蓄热装置进行蓄热,根据谷/平电、空闲时段的蓄热量所需容积和水箱可放置的建筑空间,选取两者较小的容积,从而减小占地面积。这种由热泵蓄热、水箱供热、热泵供热、联合供热、边蓄边供组成的定制方案,在投资、占地面积、电力增容方面均优于普通低温模块方案。

该方案实施后,目前每天节能费用省出2800多元,月度的节约费用应该在8万左右。如今,海尔智慧楼宇专业化方案受到市场认可,连续3年稳居全系热泵市场第一份额。

节能低碳,助力能源转型发展

为应对全球气候变化,我国迅速采取措施,制定“双碳”目标,为了这个目标的实现,又推出了能源转型战略。响应国家号召,各行业都积极部署低碳转型,海尔智慧楼宇也针对能源转型进行了深入的探索。

海尔智慧楼宇提出多能互补低碳综合能源体系,攻克清洁供热中单一热源的不稳定性问题,并将设备接入基于楼宇大脑的清洁能源智控平台,有效助力能源转型发展。

多能互补低碳综合能源体系采取绿色发电方式,如光伏、风电等,也通过ORC余热发电设备等产生清洁电力,并将清洁电力应用到可灵活调节的耦合热泵系统中进行有效供热。在白天,光热光伏的热能可保证建筑内的热水供应,电能则可以直接驱动空调、照明等系统的运行,太阳能利用率超70%。除建筑运营外,富余的电能还可以存储备用,或者并网出售,实现了建筑无限接近“零碳运营”。

与此同时,海尔智慧楼宇多能互补低碳综合能源体系,不仅实现清洁用电,也兼顾了用户对设备管控和舒适节能的需求,依托基于楼宇大脑的清洁能源智控平台,一键远程管理上百个热泵,运行更安心,管理更省心。以唐山古冶为例,在应用海尔智慧楼宇定制化方案后,实现全自动运行、无人值守,整体上节能降碳30%,也使当地居民在冬季-10℃的寒冷天气下,享受到了室温22℃以上的舒适环境,让生活更舒适。

海尔智慧楼宇高温热泵蓄热供暖方案在降低成本、能源转型等方面均实现创新发展,为行业发展带来了新思路。未来,海尔智慧楼宇将继续聚焦科技创新与绿色发展,为用户带来更智慧节能的体验,助力国家能源转型战略加速落地。

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