Electrification potential and heating system analysis in brewing industry

doi:10.11949/0438-1157.20241218

Abstract

Abstract:

As a unique industrial sector in China, the brewing industry has substantial heat demands in production, with the alcohol, beverage, and refined tea sectors consuming 1.96×10⁸ GJ of heat annually. Given this profile, brewing is well-suited to pioneer industrial heat electrification, setting a model for other sectors. Industrial heat pumps, known for high efficiency and environmental benefits, are essential for this transition. This study introduces a brewery heat system centered on industrial heat pumps, validated in practical applications, showing stable heat supply and notable cost savings—only 57.5% and 54.3% of the costs of gas and electric boilers, respectively. With improvements in pump efficiency and renewable energy share, electrified heating via industrial heat pumps is poised for even greater carbon-reduction impact.

Key words: brewing industry, industrial heat electrification, industrial heat pump, carbon reduction

摘要：

酿酒作为中国工业特色行业，生产工艺用热需求高，以其为代表的酒、饮料和精制茶制造业每年用热可达1.96×10⁸ GJ。基于其用热需求特点，有望率先开展工业用热电气化转型，为中国其他工业部门提供示范与技术参考。工业热泵具有能效高、低碳环保等优势，是工业用热电气化的关键技术。提出一套以工业热泵为核心的酿酒供热系统，并在实际应用中得到验证。运行效果表明，该方案供热稳定，展现出明显的运行成本优势，仅为燃气锅炉的57.5%、电锅炉的54.3%。随着热泵能效和可再生能源发电量占比的不断提高，工业热泵电气化供热技术将进一步展现出显著的减碳优势。

关键词: 酿酒行业, 用热电气化, 工业热泵, 减碳

CLC Number:

TB 657.5

Zhongyi LIU, Bin HU, Ruzhu WANG, Yun ZHAO, Ziwen CAI, Yunfeng LI. Electrification potential and heating system analysis in brewing industry[J]. CIESC Journal, 2025, 76(S1): 401-408.

刘中毅, 胡斌, 王如竹, 赵云, 蔡梓文, 李云峰. 酿酒行业用热电气化发展潜力与供热系统[J]. 化工学报, 2025, 76(S1): 401-408.

Figures/Tables 11

Fig.1 Annual production of Chinese liquor from 2014 to 2023

Fig.2 Typical sauce-flavor liquor brewing process

Fig.3 Annual energy consumption in China’s wine, beverage and refined tea industries

Fig.4 Demand for heat in China’s wine, beverage and refined tea industries

Fig.5 Schematic diagram of heating system

Fig.6 Schematic diagram and pressure enthalpy diagram of cascade circulation system

Fig.7 Design of thermal electrification transformation scheme for a winery

Table 1 Typical equipment of winery electrification heating transformation scheme

设备	型号与规格	数量/台
复叠式空气源工业热泵	NT-AS-120FTBW	4
闪蒸罐	2.1 m³不锈钢定制	1
净水机	1 m³/h，反渗透	1
循环水泵	XLB100-30型旋流泵	2
纯水箱	2 m³	1
补水泵	1 m³/h	2

Fig.8 System operating temperature curves

Table 2 Comparison of data of electrification heating transformation scheme in winery

项目	燃气锅炉	电锅炉	工业热泵
能效比	0.85	0.95	1.75
吨蒸汽能量/kWh	—	732	—
吨蒸汽能耗	95 m³	770 kWh	418 kWh
能源单价/(CNY/(kWh))	4.8 CNY/m³	0.7	0.7
管道损失效率/%	15	5	5
吨蒸汽运行成本/CNY	536	567	308
每小时用气量/(t/h)	—	0.7	—
年运行时间/h	—	3600	—
运行费用/CNY	1350720	1428840	776160
节省电费/CNY	78120	—	652680
节省燃气费/CNY	—	-78120	574560
投资回收期/a	与燃气锅炉相比		4.5
投资回收期/a	与电锅炉相比		3.9

Fig.9 Carbon reduction potential

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