Research On The Energy Saving Potential Of Air Conditioning System With Different Forms Of Temperature And Humidity Independent Control Air-conditioning System In South China Area Of Office Building

Many scholars have analyzed the energy saving potential of temperature and humidityindependent control of air-conditioning systems. However, many researchers ignored thefollowing two problems in the analysis of the energy saving potential: Firstly, thehigh-temperature chillers are not able to achieve high temperature water condition all yeararound, it is necessary to modify the annual integrated energy efficiency ratio. Secondly, thefresh air units to control humidity and dry extremity resistance are different from traditionalair conditioning systems, the changes of energy consumption caused by the changes fromfresh air units and dry extremity resistance have not been taken into account.This leads to theenergy-saving potential some deviations exist between calculation and actual theoreticalanalysis. Taking an office building in Southern China as the research object, under thepremise of modifying above two problems, this Paper focuses on the research of the energysaving potential of four kinds of temperature and humidity independent control ofair-conditioning systems. Specifically, the main research work of this Paper can be dividedinto the following three Parts.Part I: Analysis the operation principle of different forms of temperature and humidityindependent control of air-conditioning systems, and focus on the analysis ofdehumidification principle deviation between different forms of temperature and humidityindependent control of air-conditioning systems. Get the conclusion that high temperaturechillers+double temperature cold source new air handling units and high temperature chillers+liquid desiccant air units solution are suitable temperature and humidity independent controlof air-conditioning systems forms.Part II: First, Conduct research on Processing load and changes of resistance in fresh airunits and dry extremity equipment resistance; and then, modified the annual actual operationenergy efficiency ratio of high temperature chiller which reduced by3%after modified;Finally, calculate the annual energy consumption of different forms of temperature andhumidity independent control of air-conditioning systems, and analyze the energy savingpotential of different temperature and humidity independent control of air-conditioning systems, get the conclusion that energy saving rates of high temperature and pre-coolingdouble-temperature cold source of fresh air units, heat recovery double-temperature coldsource of fresh air units, pre-cooling liquid desiccant air handling units, heat recovery liquiddesiccant air handling units are:18.6%,18.8%,20.2%,19.1%.Part III: Indicated that when we are in the design of temperature and humidityindependent control of air-conditioning systems in the southern region, it is recommended toselect the outdoor humidity of calculated based on the guaranteed rate. And put forward thedifferences between temperature and humidity independent control of air-conditioningsystems and conventional air conditioning systems in the design and operation which canprovide the reference for the design and operation of actual temperature and humidityindependent control of air-conditioning systems engineering.