太阳能液体除湿空调的研究进展

介绍了太阳能液体除湿空调系统的发展历吏，对这类装置的运行原理及所采用的工质作了综述，并根据再生器的不同，将系统划分为两类。指出由于其具有环保节能的诸多优点，必将拥有广阔的发展前景。     

Proposal of a control strategy for desiccant air-conditioning systems

A control strategy for the operation of desiccant air-conditioning systems is proposed in this work. The proposed strategy consists of a basic scenario, while some alternative strategy schemes are also proposed on the basis of the approach adopted for the controlling of the humidifiers or the desiccant system operation modes included. The control strategy aims at sustaining the building conditions within values suitable for human thermal comfort, thus taking care of both temperature and humidity. The assessment of the proposed control strategy scenarios is performed in terms of effectiveness and efficiency, through the use of a desiccant system model, which takes into account the effect of transient phenomena as well. Specific information for the required hardware equipment and its implementation for the controlling of the respective system components is provided, pointing out the simplicity of the proposed solutions.     

固体吸附除湿技术用于民用建筑中央空调系统的经济性分析

针对传统空调冷却除湿方式的高能耗,提出将固体吸附除湿技术应用于民用建筑中央空调系统,并对采用这种除湿方式的干式风机盘管加固体吸附独立除湿新风系统与传统的风机盘管加新风系统在运行能耗方面进行经济性实例分析,结果表明干式风机盘管加固体吸附独立除湿新风系统较传统风机盘管加新风系统其夏季空调工况每天减少约14W/m2,有效降低建筑能耗。     

太阳能液体除湿空调系统再生和蓄能特性的研究

太阳能液体除湿空调系统中,能量在液体除湿剂中以化学能的形式存在,蓄能潜力大,再生温度低,可以利用太阳能或其它低位余热和废热。着重分析了液体除湿空调系统中溶液的再生原理和再生过程的传热传质特性,对再生过程进行了实验研究,获得了再生过程对流传质和对流换热的实验准则方程,讨论了各主要因素对再生量的影响。对再生器的蓄能特性进行了分析,讨论了太阳能液体除湿空调系统蓄能工况的运行方式。     

Solid desiccant air-conditioning systems – Design parameters

Solid desiccant air-conditioning systems can take care of both the sensible and latent load of a conditioned space, as well as of the fresh air requirements, through the use of thermal energy. The development of desiccant systems, competitive to conventional cooling ones, would require the optimization of the parameters which are involved in the design of the systems for a range of ambient conditions the systems will face throughout their lifetime. The present work aims at identifying the main design parameters, and investigates their effect on the performance of the systems. Specific guidelines for the dimensioning of the systems are proposed, on the basis of an easy to implement steady state model.     

Investigation on regeneration and energy storage characteristics of a solar liquid desiccant air-conditioning system

Solar liquid desiccant air-conditioner is a new air-conditioning system in which liquid desiccant can be regenerated by solar energy and energy can be stored in the form of chemical energy in the liquid desiccant. In this paper regeneration and energy storage characteristics were studied theoretically and experimentally. Two criterion equations for heat and mass transfer in the regeneration process were obtained. The main factors that influence the regeneration process were analyzed. A principal solar liquid desiccant air-conditioning system under energy storage operating mode is proposed. Translated from Acta Energlae Solaris Sinica, 2006, 27(1): 49–54 [译自: 太阳能学报]     

太阳能界面蒸发驱动溶液再生的实验研究

为进一步提高液体除湿空调溶液再生性能,提出一种基于太阳能界面蒸发的溶液再生方式。研究溶液种类、浓度对于再生速率和效率的影响,并与传统热再生及膜再生进行对比。结果表明,在一个太阳强度照射下,温度为26 ℃、质量浓度为40%的LiCl溶液达到0.39 kg/（m²·h）的再生速率,质量浓度为80%的KCOOH溶液达到0.37 kg/（m²·h）的再生速率。与传统的膜再生以及填料塔热再生相比,该方式展现了较高的再生速率,因此基于太阳能界面蒸发方式有望成为一种新型高效的溶液再生方法。     

Engine-driven hybrid air-conditioning system

A hybrid air-conditioning system that combines an engine-driven chiller with desiccant dehumidification was configured and experimentally tested to provide reliable data for energy consumption and operation cost. The engine performance and the desiccant wheel performance were measured and a numeric model previously set up for dehumidification capacity prediction was validated. For a reference building, the results based upon measured data show that under present electricity/gas price ratio, more than 40% of operation cost can be saved by the hybrid system.     

太阳能平板降膜型再生器的模拟和实验研究

在对液体再生机理研究的基础上,针对对流和辐射传热边界条件,建立了太阳能平板集热型再生器中逆流降膜再生过程的数学模型,并通过实验方法对该模型进行验证,实验采用CaCl2水溶液作为除湿剂,分析了各种进口参数对再生效果的影响.结果表明:模拟结果与实验数据能够较好地吻合;太阳辐射强度、空气温度、空气含湿量和溶液浓度等均对再生过程有不同程度的影响.     

On the performances of a hybrid air-conditioning system in different climatic conditions

In previous papers the authors demonstrated that significant energy savings can be achieved in air-conditioning through the use of a hybrid plant in which a vapor-compression inverse cycle is integrated with an air dehumidification system working with hygroscopic solution and hydrophobic membrane. The advantage of this system lies in the fact that the refrigeration device operates at a higher evaporation temperature than that of a traditional system, in which dehumidification is achieved through condensation.In the proposed hybrid system the supplied air is simultaneously cooled and dehumidified in an air-solution membrane contactor. The LiCl solution is cooled by means of a vapor-compression inverse cycle. The solution is regenerated in another membrane contactor by exploiting the exhaust air and the heat rejected by the condenser.The paper reports a study of the steady-state behavior of the system in summer climatic conditions on varying some significant climatic parameters, such as the latent load of the conditioned space and the outdoor and indoor relative humidity. The performances of the hybrid system are compared with those of a traditional direct-expansion air-conditioning plant. Results of the simulations reveal that energy saving may exceed 60% when the latent load in the conditioned environment is high.     

太阳能液体除湿空调系统模型的建立与分析

对太阳能液体除湿空调系统进行了热力学分析，得到系统各主要部件的传热传质模型，并编制了计算机模拟程序，对影响系统性能的各参数进行了分析，探讨了该系统在高温高湿地区及大通风量下与压缩式空调系统相比的优势。     

蓄冰空调系统在办公类建筑中的经济性分析

针对蓄冰空调系统的工程应用,阐述系统工作原理及其适用性分析,选取河北省某办公建筑作为研究对象,按照此建筑用能特点以及当地电价结构,选择了100%、80%、60%、40%、20%五档部分负荷率对蓄冰空调系统与传统空调系统进行全年运行能耗及电费对比,分析结果表明:虽然蓄冰空调系统初投资偏高,但其年运行费用比传统空调系统节省电费32.4%,寿命期内年费用节省20.43%。     

太原市环境空气中苯并芘污染状况调查

叙述了太原市城市空气中苯并芘的浓度、污染现状及污染趋势,指出,太原市环境空气已受到苯并芘的污染,污染呈下降趋势。     

太阳能液体除湿空调系统中除湿器型式的选择

太阳能液体除湿空调系统是一种利用太阳能等低温热源的节能空调系统。除湿器直接影响太阳能液体除湿空调系统的性能。本文从焓湿图、蓄能、MR的选取和除湿效果等几个方面对目前被广泛应用的两种典型的除湿器进行了比较分析。     

转轮式固体干燥剂制冷空调系统的数值计算与分析

阐述了一种新型制冷空调机－转轮式固体干燥剂制冷空调系统的组成及其原理，并建立了物理模型和数学模型。在此基础上用编制的ＤＡＣＳ程序，对一种通风式系统的性能进行了计算。