Shanghai Electric Fengxian: 1.1 MW molten-salt storage coupled to a high-temperature heat pump for steam
Shanghai Electric (acceptance 9 May 2025): a 1.1 MW / 10.8 MWh molten-salt store coupled to a high-temperature heat pump, supplying industrial steam at a factory in Fengxian, Shanghai. This is thermal storage plus a heat pump, not a process-steam heat pump of the closed-cycle plus MVR type. Not independently metered here.
工程数据
- Case type
- Public-source case
- Data status
- public_source
- Industry
- Manufacturing
- Source temperature
- Not disclosed
- Sink temperature
- Not disclosed
- Temperature lift
- Not applicable
- Heating or cooling duty
- 1100 kW
- Architecture
- Single-tank molten-salt storage coupled to a high-temperature heat pump for green steam
- Result status
- Shanghai Electric reported that after more than two months of trial operation the system passed the owner's acceptance on 9 May 2025 and entered commercial operation. Steam conditions are not published as one fixed pair.
- Key risk
- A combined efficiency above 100% is an accounting claim, not a vapor-compression COP. Do not file this entry under process steam heat pumps.
- Existing system
- Industrial steam demand at the Fengxian factory; the published system charges a molten-salt tank and releases steam
- Refrigerant
- Not stated in the acceptance note used here
- COP
- Not disclosed
- Annual savings
- Source claim: about 743 kWh electricity per tonne of steam, described as 12% below the comparison they use; a stated combined efficiency of 102% is not treated here as a heat-pump COP
- Estimated payback
- Not disclosed in the note used here
项目背景
The central research institute of Shanghai Electric published a molten-salt and high-temperature heat-pump steam system at a factory in Fengxian, Shanghai, China. The library tag is thermal storage, so it stays apart from operating process-steam heat pumps such as the delfort and Takeda entries.
叙述性输入
Published ratings: 1.1 MW and 10.8 MWh of storage. Steam temperature and pressure are not fixed in the note used here. Electricity use is stated as about 743 kWh per tonne of steam.
热泵方案
A single-tank molten-salt store is coupled to a high-temperature heat pump. The institute describes static salt heat exchange, coordinated control, and load following. Steam is the delivered product; the machine is not described as a closed heat pump plus MVR.
COP 与节能
Acceptance is dated 9 May 2025 after a trial longer than two months. The 102% combined-efficiency figure and the 743 kWh/t claim are repeated only as source statements. No COP is shown on the card.
投资回报要点
Capital cost and payback are not in the note used here.