Weather-compensating method for controlling temperature of heating and ventilating return water

A return water temperature and climate compensation technology, applied in heating and ventilation control systems, space heating and ventilation details, heating and ventilation safety systems, etc. question

Inactive Publication Date: 2010-06-16
HANGZHOU ZETA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of this invention is to solve the problem that the temperature difference between supply and return water cannot be effectively controlled in the HVAC control process in

Method used

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  • Weather-compensating method for controlling temperature of heating and ventilating return water
  • Weather-compensating method for controlling temperature of heating and ventilating return water
  • Weather-compensating method for controlling temperature of heating and ventilating return water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The invention is mainly used for central air conditioners. The implementation of its control is as follows:

[0022] An energy-saving method for HVAC return water temperature control with integrated climate compensation, including water supply pipelines, setting regulating valves on the water supply pipelines, adjusting the regulating valves through actuators to control the thermostat controller, and setting the regulating valves on the return water pipelines in the water supply pipelines . The actuator is regulated via a thermostatic controller. One analog output interface included in the thermostatic controller is connected to the actuator of the regulating valve. The thermostatic controller includes an intelligent controller and thermal signal terminal a and thermal signal terminal b for measuring temperature. The intelligent controller includes CPU, power rectification, Conversion module, two thermal resistance input terminals and corresponding A / D conversion modu...

Embodiment 2

[0026] Example 2: The implementation of the PID algorithm to obtain the unit dimensionless x and control the opening of the actuator

[0027] The result of the PID algorithm is a unit dimensionless X (0-1). Map x to 0-100%

[0028] Formula 1: X*100%

[0029] The control signal of the actuator is a-b, which corresponds to 0-100%.

[0030] Formula 2: (m-a) / (b-a)*100%

[0031] Combining formulas 1 and 2. Find m value, m is a signal value,

[0032] x=(m-a) / (b-a)

[0033] m=x*(b-a)+a

[0034] Through the m value, the actuator opening is controlled.

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PUM

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Abstract

The invention relates to a method for saving energy of a heating and ventilating air conditioner, in particular to the weather-compensating method for controlling the temperature of heating and ventilating return water. The invention aims to solve the problems that because the temperature difference between supplied water and return water cannot be effectively controlled in a control process of a heating and ventilating air conditioner in the prior art, excessive energy consumption and the like are caused by providing an effective, energy-saving and weather-compensating method for controlling the temperature of the heating and ventilating return water. The invention adopts a main technical scheme that: the weather-compensating method for controlling the temperature of the heating and ventilating return water comprises a water supply pipeline; the water supply pipeline is provided with a regulating valve; the regulating valve performs control through an actuator; the actuator performs regulation through a thermostatic controller; a thermal signal terminal a and a thermal signal terminal b are arranged on the thermostatic controller; and the thermostatic controller compares the signal value of the thermal signal terminal a with the signal value of the thermal signal terminal b, calculates the signal values and realizes the regulation of the rate of water inflow through controlling the opening of the actuator.

Description

technical field [0001] The invention relates to an energy-saving method for HVAC, in particular to an energy-saving method for HVAC return water temperature control with integrated climate compensation. Background technique [0002] Fan coil units and heat sinks are ideal terminal products for HVAC. Fan coil units are widely used in hotels, office buildings, hospitals, commercial and residential buildings, and scientific research institutions. The fan coil unit is mainly composed of a low-noise motor and a coil. The fan cools or heats the indoor air or outdoor mixed air through the surface cooler and sends it into the room to lower or increase the indoor temperature to meet people's comfort requirements. The cold (hot) medium water in the coil is centrally supplied by the machine room; the radiators are widely installed in northern homes, and the radiators have been developed into more than a dozen types. The heat is transferred to the interior, providing a good living spa...

Claims

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Application Information

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IPC IPC(8): F24D19/10F24F11/02
Inventor 章威军沈新荣郁辉球韩林娟胡鹏麻剑锋赵栋陈智勇王晓敏王晓华
Owner HANGZHOU ZETA TECH
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