Heat exchanger station control

Introduction of Heat transfer station control


 Unmanned control function

Temperature:
Collecting and monitoring the data of heat exchanger stationthat first and second time water supply and return temperature etc.

Pressure:
Collecting and monitoring the data of heat exchanger station that first and second time water supply and return pressure, second time before and after pressure filters etc.

Flux:
Collecting and monitoring the data of first time water supply transient flux and accumulative flux, second time water pump transient flux and accumulative flux.

Heat:
Collecting and monitoring the data of first time instantaneous heat and accumulative heat.

Second time for temperature setting:
According to the temperature curve, calculating second water supply temperature setting and the actual second water supply temperature, calculating first electric regulator by PID.

Pump start and stop control:
According to the start and stop control system, start and stop circulating pump and supply pump automatically. When the accident happening, stop pump automatically.

Pump frequency control:
According to the differential pressure setting and the actual differential pressure feedback, calculate circulating pump by PID and control pump frequency.

Double compensation control:
Outdoor temperature compensation control: According to the actual operation and experience, fix the outside temperature and second water supply temperature curve.

 
Secondary water supply temperature curve

Second time the return water temperature compensation control:
Guarantee the end user's heating demand effectively
Save 5%-10% energy
According to the return water pressure setting and actual return water pressure, calculate supply pump by PID and control pump frequency.

 Hot measurement and energy consumption management functions

Energy load test and control:
Flow/heat limiting function:
The minimum and maximum limit of Water supply flux
The heat load maximum limit
According to flux value, set the limit of Valve opening

 
Intelligent digital instrument communication measurement:
Electric meter and water meter unified measurement through the bus way.
Measurement data can be accumulated and managed in the controls.
Stability data transmission, ensure that the energy consumption statistics integrity and the implementation of the senior rate.


 Equipment maintenance and rotation control

Monitoring water pump operation condition and accumulative total running time;
Control the water pump to work by turns and start reserve pump timely;
Dispatch water pump rotation movement reasonably, reduce water pump failure rate, increase water pump working life.
Increase the service life of equipment;
Avoid equipment out of service for a long time, cause the loss of assets
Reduce the cost of management and maintenance


 High energy conservation and management functions
                                                                                                

Back to temperature/DRT control function:             
To minimize the return water temperature difference;
Reduce the heating surge;
Keep the balance of the heat network;
Improve the operation economical efficiency




 
First time back to temperature limit:
Control first time return water temperature
Reduce heat-flash phenomenon
Keep the balance of the network
Improve the operation economical efficiency.

Programmed control in time:                                          
Public buildings: during work time program
Holiday, as the seasons change time program
With hot peak regulation, the time program of hot water
Greatly reduced energy consumption,
for good economic benefit
 

 

                                                     
Unit heat exchanger

 

 


Introduction of unit heat exchanger:
Intelligence unit heat exchangeris the mechanical and electrical equipment that is the integration of the heat exchanger, circulating pump, water supply pump, instrument, sensors, electrical control and pipeline valves. It also can be used to do the scientific calculation and optimization design. Intelligence unit heat exchanger has lots of advantages, for example hardware configuration is excellent, structure layout is reasonable, the control system is advanced, operation management is convenient, operating expense is low. It can provide the integration of heat exchange comprehensive solutions for the different needs of users. Intelligence unit heat exchanger has been used widely in many fields, such as district heating system, living hot water system, waste heat recovery and so on.


Product advantage:

1 Professional design
Unit heat exchanger is the integration of thermal machinery, process instrumentation, network communication, electric control and so on. According to different users, provide heat exchange unit for the optimization design of the hardware and software, tailor-made, to meet user requirements under different conditions.

2 More stable quality
Industrialized production, the design, the production, the test, and observe ISO9001 international quality system strictly. It contains each technology links, such as design control, procurement control, process control, product inspection , product safety controland so on. Ensure that unit heat exchanger quality is stable and reliable.

3 More cost-effective
Compact structure can greatly reduce room area and infrastructure costs. In addition, it has been tested strictly before leave the factory. Install the connection is convenient, can be put into operation on, reduce the on site installation engineering cost, shorten the construction period.

4 Operation management more easily
Human-machine interface is Humanized, operation and management is convenient. Advanced and proven control system, low failure rate, less maintenance, energy efficiency, can really realize their duties safe operation and remote monitoring automatically.

 

 · Multi-heatsource network simulation


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