Energy control system and control method for heating and cooling water circulation

An energy control, cold water circulation technology, applied in heating systems, heating methods, household heating and other directions, can solve the problems of energy waste of circulating water pumps, energy and heat energy waste, etc., to reduce heat energy waste, avoid overcooling or overheating, economical Significant effect

Inactive Publication Date: 2011-12-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a water cycle energy control system and control method, which can effectively adjust the thermal comfort in the room and avoid overheating or overcooling in the building room; at the same time, it can solve the serious waste of energy and heat energy and the energy waste of circulating water pumps question

Method used

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  • Energy control system and control method for heating and cooling water circulation
  • Energy control system and control method for heating and cooling water circulation
  • Energy control system and control method for heating and cooling water circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Circulation control of double pump system

[0043] Circulating water control system

[0044] as attached figure 1As shown, the hot water from the heat source is divided into two parallel branch pipelines after passing through the electric regulating valve 2 through the water supply pipe, and the manual regulating valves 6 or 7 are respectively installed on the branch pipelines (these two valves can be connected with The electric regulating valve 14 or 15 is interchangeable, also can directly change into electric regulating valve), circulating water pump 10 or 11, electric regulating valve 14 or 15. A differential pressure sensor 8 or 9 is provided on the circulating water pump 10 or 11 of the branch pipeline to measure the differential pressure provided by the circulating water pump. The circulating water pump frequency converter 12 is installed on the circulating water pumps 10 and 11. On the one hand, the frequency converter can transmit parameters such as the speed...

Embodiment 2

[0048] Circulation control of double pump system

[0049] Circulating water system control method

[0050] (1) Control principle: According to the heat E provided by the water cycle in the comparison system s and the heat E consumed at the set temperature to maintain the room temperature c , without measuring the room temperature, to ensure that the room temperature is within its control range. When providing heat E s Less than the heat consumed at the set temperature E c , it is judged that the actual temperature in the room is higher than the set value. At this time, for the heating system, the water flow of the system should be reduced; for the cooling system, the water flow of the system should be increased.

[0051] (2) The heat E provided by the water cycle s

[0052] Calculate the value in two cases

[0053] The first case: the pressure difference of the external network can provide all or part of the power of the water cycle of the system, at this time

[0054]...

Embodiment 3

[0101] Circulation control of double pump system with water mixing device

[0102] What the present embodiment described is the heating and cooling water circulation system that has water mixing device. The difference from the above-mentioned system without a water mixing device is that a water mixing device is provided on the basis of the volume adjustment in Example 1, and this system can perform water mixing adjustment during operation, that is, adjust the water supply temperature to the user - - Quality regulation. Therefore, in a system with a water mixing device, the control system of the present invention can realize mass-flow adjustment of the heating and cooling systems.

[0103] Mixed water control system:

[0104] Mixed water control systems are generally used in low-temperature heating systems such as geothermal heating. Its operating system is similar to the control structure of the circulating water system, the difference is that on the water supply pipe from th...

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Abstract

An energy control system and control method for heating and cooling water circulation, relating to the control of a multi-user heating and cooling system and its corresponding water pump system with or without adjustment function in its terminal devices. It effectively solves the problems of heat energy waste and energy waste generated by water pump circulation. The present invention consists of heat source water supply and return pipelines, water pumps, VFD frequency converters, flowmeters, electric regulating valves, differential pressure sensors, temperature sensors, user terminals, and related control logic that can monitor the performance of the water pumps, start/stop the water pumps, and adjust the frequency of the water pumps. The controller composition. The implementation of the present invention can control the indoor temperature very well, improve the indoor comfort, avoid the overall overcooling or overheating phenomenon in the building room; and can reduce the waste of heat energy by 30%; reduce the energy waste of the circulating water pump by 70%-90% %.

Description

technical field [0001] The invention belongs to the technical field of heating and cooling, in particular to a multi-user terminal device with or [0002] Control systems for heating and cooling systems without regulation and their associated pumping systems. Background technique [0003] At present, the heating systems of buildings (including residential buildings, commercial buildings, etc.) are mostly systems that use hot water as the heat transfer medium. There is a corresponding water pump system at the hot inlet, and some of them use mixed water. [0004] For the heating system whose end device is a radiator, the hot water from the boiler room is supplied to multiple buildings, flows through the pipeline through the water pump at the user entrance of each building, and is pressurized by the water pump and sent to the end of each household to supply the building. hot. The end of this heating method (the radiator itself) generally does not have an automatic adjustment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D19/10F25B49/00
Inventor 刘明生
Owner HARBIN INST OF TECH
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