Control method for convection and radiation adaptive supply heating and ventilation system

Abstract

A control method of a convection and radiation adaptive supply heating and ventilation system. The system includes a system master controller and an outdoor heat pump system, a temperature control center, an outdoor temperature sensor, an indoor temperature humidity sensor, a convection air conditioning terminal, and a radiant air conditioning terminal respectively connected to the system master controller. In operation, the system master controller compares the detection temperature to the set temperature, the convection air conditioner terminal is operated to quickly adjust the indoor air temperature when the temperature difference is large, and the convection air conditioner terminal is turned off or weakened after the temperature difference is less than a certain value to operate the radiant air conditioner termnial to increase comfort.

Description

technical field [0001] The invention relates to a heating ventilation control method, in particular to a control method for a convection and radiation self-adaptive supply heating ventilation system, and belongs to the technical field of heating ventilation control. Background technique [0002] The heat transfer methods of traditional HVAC systems mainly include radiation heat transfer and convective heat transfer. Among them, radiant heat transfer completes heat transfer through radiant heat exchange between the radiant surface and the rest of the surface of the human body, furniture, and enclosure structures, such as roof radiant air conditioners, floor radiant air conditioners, etc.; convective heat transfer completes heat transfer through air transfer of heat energy, such as Terminal equipment such as fan coil units and low-temperature radiators. HVAC systems using single radiation or convective heat transfer have been widely used in China. Although the single radiant...

AI Technical Summary

Problems solved by technology

Although the single radiant HVAC system has the characteristics of uniform temperature distribution, comfortable thermal feeling, and quietness, it also has disadvantages such as poor thermal inertia, slow air heat exchange speed, and high engineering cost; although the single convection HVAC system has the advantages of air heat exchange speed Fast, moderate cost, etc., but at the same time, it has disadvantages such as uneven temperature distribution, uncomfortable body feeling, easy to generate noise, strong blowing feeling, and cold air at the beginning of system operation under heating conditions.

[0003] There are obvious defects in the control mode of the convection and radiation HVAC system in the prior art, and its convection and radiation control mode is relatively simple: under the heating condition, the end of the convection air conditioner hardly participates in the heat supply, and the single water supply temperature of the water tank leads to excessive For heating, the large thermal inertia at the radiation end makes the indoor thermostat unable to accurately control the room temperature, resulting in poor indoor comfort and energy waste under heating conditions

Under the cooling condition, it relies on the end of the convection air conditioner for cooling, and cannot better achieve indoor dehumidification, and cannot realize the supplementary cooling at the end of the radiant air conditioner, resulting in poor comfort and energy waste under the cooling condition

In addition, relying on convection air conditioners for cooling at the end also caused problems such as strong drafts and loud noises

Images