Fuzzy-PID Controller with Variable Integral Parameter for Temperature Control in Variable Air Volume Air Conditioning Systems

As the improvement of the modern workshop’s demand for cool supply, heating system, how to effectively manage the air-conditioning equipments to satisfy the production skills for air-conditioning system has become an important subject for modern workshop design. This paper comes from the No.1 motorcar company’s project about the automatic air-conditioning system of the car spray-paint workshop. For many reasons, the conventional PID control is difficult to satisfy the car spray-paint production’s strictly demands of the temperature, after a careful research of the object, we utilize the principle of fuzzy PID adaptive control to design a fuzzy PID controller, then put it into the air-conditioning heater’s controlling, through the practice, we find the controller has a good robust property and realized a good control result.

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Life Cycle Cost Analysis of Air Conditioning Systems in a Perimeter Zone for a Variable Air Volume System in Office Buildings

Journal of Asian Architecture and Building Engineering ◽

10.3130/jaabe.9.243 ◽

2010 ◽

Vol 9 (1) ◽

pp. 243-250 ◽

Cited By ~ 1

Author(s):

Yeon-Jeong Na ◽

Eun-Ji Nam ◽

In-Ho Yang

Keyword(s):

Life Cycle ◽

Cost Analysis ◽

Life Cycle Cost ◽

Air Conditioning ◽

Office Buildings ◽

Life Cycle Cost Analysis ◽

Variable Air Volume ◽

Air Volume ◽

Air Conditioning Systems

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Feasibility study for the use of variable air volume systems for office buildings

Ventilation, Illumination and Heat Gas Supply ◽

10.32347/2409-2606.2021.36.62-79 ◽

2021 ◽

Vol 36 ◽

pp. 62-79

Author(s):

A. Moskvitina ◽

M. Shyshyna ◽

M. Korchminskyi

Keyword(s):

Greenhouse Gas Emissions ◽

Greenhouse Gas ◽

Carbon Dioxide Emissions ◽

Air Conditioning ◽

Office Buildings ◽

Operating Costs ◽

Gas Emissions ◽

Variable Air Volume ◽

Air Volume ◽

Air Conditioning Systems

The main factor contributing to greenhouse gas emissions is the building up of the surrounding area. Studies have shown that buildings globally consume 30-40 % of energy use and release 40-50 % of global carbon dioxide emissions. Among all systems in houses, heating, ventilation and air conditioning (HVAC) systems are by far the most energy intensive. They consume approximately 50 % of the total energy demand of buildings. However, the systems are some of the most important systems in today's buildings. The number of these systems that are being installed has increased dramatically over the past few years. This is mainly due to the increasing demands for thermal energy, comfort and climate change. This paper presents a feasibility and ecology study between two ventilation or air-conditioning systems: constant air volume (CAV) and variable air volume (VAV). One of the purposes of this work is to determine the energy costs for each of the systems. An air conditioning system that saves operating costs usually requires a large initial investment. In this case, engineers must decide whether it is worth paying the additional upfront costs for a system that has lower operating costs. Despite the low attractiveness from the point of view of the investor, the VAV systems reduce the amount of greenhouse gas emissions and the amount of energy resources for servicing the commercial sector. Such system have less metal consumption. Thus, the cost of metal processing is also reduced. The results of this study can contribute to the future selection of ventilation systems, as well as contribute to the design and improvement of the systems under study. Energy saving is one of the main reasons why VAV systems are very popular today for the design of ventilation and air conditioning systems for office buildings and in many industries abroad. With these systems, the volume of transported air is reduced as soon as the operating load falls below the maximum projected load. The calculation of emissions of harmful substances into the environment was made while ensuring the operation of CAV and VAV systems.

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