Mixed water heating equipment

Product release date: March 23, 2015 13:22:52 Click:

Intelligent energy-saving low-temperature heating unit
1. Overview
With the continuous development of society, the urban heating area has been rapidly increasing year by year, and the boiler capacity expansion is seriously lagging behind. Many cities' heating temperatures cannot meet the requirements of conventional indirect heat exchange, which brings new opportunities and challenges to our industry. How to provide normal heating in low-temperature heat medium (60 ℃ -70 ℃) is an urgent problem that needs to be solved. After repeated experiments, our company has produced a series of intelligent energy-saving low-temperature mixed water heat exchange units, which have now been applied in high-rise building heating.
2. Intelligent control optional
The intelligent control options include:
Basic intelligent control: automatic constant temperature and pressure operation, one water pump for backup and one for use, automatic alarm and rotation for faults and overloads, timed automatic rotation
Simulated computer automatic control: In addition to basic intelligent control, remote communication, touch screen, and PLC joint control are added to achieve functions such as simulated display of operating status, various operating parameters, real-time data, historical data, and report printing.
3. Selection of intelligent energy-saving low-temperature heating units
⑴. Intelligent energy-saving low-temperature half flow mixing unit
Scope of application: Suitable for situations where the pressure of the heating pipeline network can ensure the normal circulation of the secondary system. (Especially suitable for low-temperature floor radiant heating)
Working Principle:


The intelligent semi flow mixing unit water pump is installed on the bypass pipeline between the supply and return water, using automatic temperature control and frequency conversion technology to achieve the required temperature and pressure for the secondary heating system after mixing water.
⑵. Intelligent energy-saving low-temperature full flow mixing unit
Scope of application: Suitable for district heating in high-rise buildings, where the pressure of the heating network cannot guarantee the normal circulation of the secondary system. (Especially suitable for low-temperature floor radiant heating)
Working Principle:





The intelligent full flow mixing unit water pump is installed on the water supply pipeline after mixing, using hydraulic control valves to automatically control the proportional distribution of supply and return water and frequency conversion technology to achieve the required temperature and pressure for the secondary heating system after mixing.
⑶. Intelligent energy-saving low-temperature high-rise stacked water mixing unit
Scope of application: Suitable for secondary heating in high-rise building zones (above 30 floors).
Working principle:


In order to overcome the excessive selection of single circulating water pumps in high-rise buildings, a method of superimposing the pressure of two sets of water pumps is adopted, and automatic temperature control and frequency conversion technology are used to achieve the required temperature and pressure for the mixed water secondary heating system.
⑷. Intelligent energy-saving low-temperature high-rise direct connected heating unit
Scope of application: Suitable for district heating in high-rise buildings, where the pressure of the heating network cannot guarantee normal circulation of the secondary system but temperature control is not required. (Suitable for radiator heating)
Working Principle:


The water pump of the intelligent high-rise direct connected heating unit is installed on the primary water supply pipeline, using hydraulic control valve automatic control and frequency conversion technology to achieve balance between the primary and secondary heating systems.
(5) Scope of application of QZGN series intelligent mixed water heating unit
1. High rise buildings should not use indirect heat exchange for heating in high-rise areas.
(1) The water supply temperature in the pipeline network is too low, making indirect heat exchangers uneconomical;
(2) The water supply temperature in the pipeline network can exchange heat, but the pressure difference is too small to overcome the resistance of the heat exchanger;
(3) Heat pump and central air conditioning water system, small temperature difference heat exchange is not economical, and the pressure of the main unit needs to be limited;
2. For systems with large terrain elevation differences, this equipment is used to directly provide heating for high-rise multi story buildings.
3. The application of this equipment does not require any modifications to the heating system inside the building for the grid connected renovation of the heating network or the replacement of heat exchange units with poor heating effects in old buildings.
4. Suitable for systems where users actively change flow rates by installing and using temperature control valves and heat meters.
Plate heat exchange unit
Scope of application: Suitable for heating in various occasions with a single heating temperature above 80 ℃.
Working Principle:


The plate heat exchanger unit adopts asymmetric channel plate plates, with one side of the channel having a cross-sectional area twice that of the other side. The heat transfer coefficient tube reduces the heat transfer area and saves energy while reducing costs. It mainly consists of asymmetric channel plate heat exchangers, circulation pumps, make-up pumps, and automatic water treatment systems.