Discussion on the efficiency of air conditioning control combined with pre-cooling air conditioning system
| Autor: | Shuen-Chao Chang, 張順超 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 Taiwan is in a humid and high-temperature climate in the subtropical zone. According to statistics, modern people have an average of 90% of working hours. In indoor environments (including home environments, offices or other buildings), "Sick Building Syndrome" is prone to occur. However, most of the researches are aimed at the correlation between biogas glue (referred to as biological particles suspended in the air), office buildings, hypermarkets, and the environment and air quality in the north, south, and south. This research experiment is based on the registration and analysis of the indoor air quality of a medical center in Kaohsiung, and following the domestic indoor air quality management method and the indoor air conditioning temperature demand, the air conditioning box is matched with the pre-cooled air conditioning box. Under different control modes, the carbon dioxide concentration in the indoor chamber and the power consumption of the air conditioner box motor in the variable frequency operation are statistically analyzed. The first stage carbon dioxide concentration is set at 800ppm to control the damper opening of the air conditioner box automatically, and the different frequency control of the return fan motor is separately controlled. So with the pre-cooled air-conditioner as the introduction condition when the external air is insufficient, the energy-saving benefit has a difference of 30.8%. In the second stage, the indoor air-carbon concentration detector and the outdoor devaluation detector automatically control the damper opening of the air-conditioning box. Also, with the pre-cooled air-conditioning box as a condition when the outside air is insufficient, its energy-saving benefit is better than the first stage, its energy-saving advantage can also reach 32% difference. According to the analysis of the experimental results, the best way to improve the indoor air quality is to introduce fresh external air volume, install the devaluation detector for the air inlet of the air-conditioner, control the inverter with the return fan, and match the pre-cooled air-conditioning box. Introducing conditions when gas is insufficient is one of the ways to help reduce air conditioning load and power consumption. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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