Energy conservation type heat comfortable controller and control method

A controller and control signal technology, applied in the direction of adaptive control, electrical program control, general control system, etc., can solve the problems of no design energy saving strategy, low flexibility, and inability for users to choose

Inactive Publication Date: 2008-03-12
香港中文大学精密工程研究所 +1
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  • Abstract
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Problems solved by technology

However, the disadvantages of the above-mentioned patents or patent applications are that multiple sensors are used to measure air temperature, humidity, radiation temperature, wind speed and human activity status, etc., and the cost is relatively high
The clothing situation is predicte

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  • Energy conservation type heat comfortable controller and control method
  • Energy conservation type heat comfortable controller and control method
  • Energy conservation type heat comfortable controller and control method

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Embodiment Construction

[0032]As mentioned above, the energy-saving thermal comfort controller of the present invention calculates the thermal comfort index PMV based on six parameters (air temperature, air humidity, wind speed, radiant temperature, user activity level and clothing condition). As shown in Figure 1, the value range of PMV index is -3~3. Under normal circumstances, when the PMV value is zero, the thermal environment is the most comfortable, if it is greater than zero, it will be hotter, and if it is less than zero, it will be colder. The controller of the present invention adopts an energy-saving control method, divides the HVAC system into three operation stages of rapid cooling / heating, comfortable operation, and energy-saving operation, and provides corresponding comfort index PMV set values. After obtaining the PMV actual value, the controller compares the PMV actual value with the set value, and according to the deviation between the set value and the actual value, generates a con...

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Abstract

The present invention discloses an energy-saving thermal comfort controller and a control method for heating, ventilating and air-conditioning systems based on thermal comfort index, energy-saving control and neural network arithmetic. Wherein, the controller calculates and displays thermal comfort index based on air temperature, humidity, wind speed, radioactive temperature and user activity details and wearing details. The air temperature and humidity are measured by a sensor. The radioactive temperature is equivalent to the air temperature. The wind speed is obtained by calculating input power of a fan. User activity details and wearing details are defined by users themselves or conform to default values. The energy-saving control method divides heating, ventilating and air-conditioning system into three operating phases, viz. quick refrigerating/heating, comfortable operation and energy-saving operation and provides corresponding set comfort index. In addition, the neural network arithmetic conducts calculation and outputs control signals according to difference between set comfort index and actual index to control the heating, ventilating and air-conditioning system respectively through a AC and a DC drive circuit, thus realizing the highest comfort and the lower energy consumption.

Description

technical field [0001] The present invention generally relates to a controller and a control method of an indoor climate change device, in particular to a controller and a control method for an HVAC system, so as to provide users with satisfactory energy-saving thermal comfort control effects. Background technique [0002] At present, HVAC systems have been widely used in daily work and life. The controller of the existing HVAC system usually adopts the constant temperature control method, that is, the user first sets the temperature value and the fan gear, and then adopts the on-off control mode, the proportional-integral control mode or the currently popular fuzzy control mode to control the temperature. The indoor temperature is adjusted, and some advanced or large-scale equipment also adjusts the indoor humidity at the same time. When the indoor air temperature is adjusted to the set value or a certain range, the HVAC system stops cooling / heating, and only the fan conti...

Claims

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Application Information

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IPC IPC(8): G05B19/02G05B13/02
Inventor 杜如虚梁坚梁国昌陈国耀
Owner 香港中文大学精密工程研究所
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