Abstract
Temperature measuring point is the key to room environment control. Temperature measuring points and climate changes are directly related to the room control effect. It is of great theoretical and practical significance to study the temperature measuring points and control strategy based on climate compensation. In this study, first, the climate compensation concept in a heating system was introduced into a variable air volume (VAV) air-conditioning system. The heating load was modeled as a function of supply air temperature by analyzing the heat exchange. Based on each control link of subsystems, a climate compensation scheme is proposed to determine the optimal set-point of the supply air temperature. At the same time, a layout of multiple temperature measuring points of an air-conditioned room was studied. Furthermore, the optimal indoor temperature measuring point was determined using an adaptive weighted fusion method. Finally, simulation results show that the proposed method has better control effects on indoor temperature adjustment compared with the traditional method. The optimal supply air temperature in summer and winter was determined according to the proposed climate compensation scheme, and the supply air temperature was controlled using an improved single-neuron adaptive control strategy. Experimental results show that the maximum energy saving can reach up to 35.5% in winter and 6.1% in summer.
Highlights
The variable air volume (VAV) air-conditioning control system can be individually controlled according to different needs of different air-conditioned areas
In an air-conditioning system, the existing climate compensation and energy-saving control strategy refers to the central air conditioning to adjust the chilled water supply or return water temperature of the chiller according to the external climate changes
If a climate compensation in a heating system is applied to the wind system of VAV air-conditioning system, the supply air temperature can be changed in real time according to the outdoor climate
Summary
The variable air volume (VAV) air-conditioning control system can be individually controlled according to different needs of different air-conditioned areas. In an air-conditioning system, the existing climate compensation and energy-saving control strategy refers to the central air conditioning to adjust the chilled water supply or return water temperature of the chiller according to the external climate changes. If a climate compensation in a heating system is applied to the wind system of VAV air-conditioning system, the supply air temperature can be changed in real time according to the outdoor climate. Motivated by the aforementioned issues, we firstly study the indoor temperature sensor arrangement to determine the optimal measuring points of indoor temperature in air-conditioned rooms. The optimal measuring point and terminal control strategy of indoor temperature in air-conditioned rooms were evaluated
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