温度湿度独立控制技术在上海某卷烟厂联合工房中的应用

介绍了上海某卷烟厂联合实验生产工房的空调设计方案,采用温度湿度独立控制的理念,冷源分别提供高温冷水和低温冷水。单独设置新风处理机组,首先采用高温冷源对新风进行预冷,再采用低温冷源对新风进行深度除湿,处理后的新风送入回风型空调机组,与回风混合后再采用高温冷源进行等湿冷却,避免了传统空调再热造成的冷热抵消。温度湿度独立控制空调系统只需控制新风处理后的含湿量和新回风混合后的送风温度,就可精确控制室内的温湿度。     

温、湿分控在卷烟厂储叶储丝房的应用

针对卷烟厂储叶储丝房夏季空调再热及冬季空调新风加热加湿问题,文章提出了一种温湿度独立控制节能空调系统,采用新风去除室内的余湿,承担室内空气质量的任务,采用高温冷源去除室内的余热。该系统解决了卷烟厂停产期间锅炉利用率低、制冷系统大马拉小车的问题,减少空调蒸汽用量和耗电量。     

温度湿度独立控制空调系统中冷却除湿方式的适应性分析

针对温度湿度独立控制空调系统中新风采用冷却除湿的方式,依据房间热湿平衡原理和湿空气的焓湿图,对新风的全年运行参数及其对室内温湿度的影响进行了分析,给出了新风冷却除湿后需要再热的室外参数区域、新风作为自然冷源最大可能的温度范围和冷却除湿设计的建议措施。     

温湿度独立控制空调系统之毛细管辐射末端篇——关于冷（暖）辐射空调的几点认识——与外地暖通设计人员的通信

空调系统具有排除室内余热、余湿、CO2与异味的功能。由于排除室内余热与排除CO2、异味所需要的新风量与变化趋势一致,即可以通过新风同时满足排余湿、CO2与异味的要求,而排除室内余热的功能则通过其它的系统（独立的温度控制方式）实现。由于无需承担除湿的工作,因而较高温度的冷源即可实现排除余热的工作。在温湿度独立控制空调系统中,采用温度与湿度2套独立的空调控制系统,分别控制、调节室内的温度与湿度,从而避免了常规空调系统中热湿联合处理所带来的损失。     

某医院病房楼温湿度独立控制空调系统设计

介绍了某医院病房楼空调设计方案,采用温湿度独立控制空调系统,单独设置新风处理机组,并采用高温冷源对新风进行预冷.详细分析温湿度独立控制空调系统的空气处理过程、新风量的设计以及负荷计算方法,为设备选型提供依据,并制定全年空调运行策略.     

温湿独立控制技术在卷烟厂房中的应用

针对卷烟厂车间传统组合式空调机组存在的热湿联合处理导致巨大的再热能耗问题,本文提出基于温湿度独立控制思想,对新风进行预处理。组合式空调机组采用高温冷源,新风预处理机组采用独立冷源。夏季设计工况下,可节省60kW的制冷量和避免57kW的再热量。同时,根据被控车间的热湿负荷特性和当地室外气象条件,给出了全年各个工况区域的控制策略。实测结果表明卷烟厂车间内温湿度控制精度达到要求。     

温湿度独立控制空调系统及性能分析

空调系统承担着排除室内余热、余湿．CO2与异味的任务。由于排除室内余热与排除CO2、异味所需要的新风量与变化趋势一致．即可以通过新风同时满足排余湿、CO2与异味的要求．而排除室内余热的任务则通过其他的系统（独立的温度控制方式）实现。由于无需承担除湿的任务,因而较高温度的冷源即可实现排除余热的控制任务。温湿度独立控制空调系统中,采用温度与湿度两套独立的空调控制系统,分别控制．调节室内的温度与湿度．     

某银行大楼双冷源(集中式)温湿度独立控制空调系统设计

介绍了某银行大楼的空调冷热源及末端机组设计。根据建筑使用功能和室内热舒适性要求，分析了室内热湿负荷分布与构成，结合双冷源(集中式)温湿度分控技术，实现了高温冷源承担新风预冷负荷及室内显热负荷，低温冷源承担新风除湿负荷及室内潜热负荷的冷热源方案。探索了双冷源(集中式)新风机组+干式风机盘管+主动式冷梁末端的应用。从空调系统的选择、温湿分控运行策略、技术经济比较等方面分析了该系统的适用性、节能性与经济性。     

地源热泵结合温湿度独立控制在办公建筑应用

本文介绍了遵义卷烟厂办公建筑的空调设计方案,设计采用温湿度独立控制的理念,冷热源由高温型土壤源热泵机组提供。办公室等房间均采用预冷式溶液调湿新风机组完成对新风的处理,并承担室内湿负荷,干式风机盘管承担室内显热负荷。大型会议室等采用预冷式溶液调湿全空气处理机组来处理空气。     

辐射空调新风除湿系统设计计算

基于北京市一栋采用辐射空调系统的住宅,计算了辐射空调新风送风的含湿量,绘制了新风系统焓湿图。通过焓湿图确定了内冷式双冷源热回收新风机组用于室内除湿时的各状态点,根据各状态点的参数值总结了设计计算时应注意的事项,提出了进一步提高系统能效比的方法。     

Performance of temperature and humidity independent control air-conditioning system in an office building

The temperature and humidity independent control (THIC) system, which controls indoor temperature and moisture separately, may be an attractive alternative to existing conventional HVAC systems for its prominent improvement on the overall system performance and utilization of low grade energy resources. In order to verify the effectiveness of THIC system, a pilot project has been implemented in an office building in Shenzhen, China. In the system, liquid desiccant fresh air handling units driven by heat pumps are utilized to remove the entire latent load of outdoor air supplied for the whole building, and chilled water at the temperature of 17.5 °C from chiller is pumped and distributed into dry fan coil units and radiant panels to control indoor temperature. This paper presents the results of field test of the system, which shows that the system can provide a comfortable indoor environment even in very hot and humid weather. The COP of the entire THIC system can reach 4.0. According to the energy usage data recorded from the year 2009, the energy consumption of the THIC system in the tested office building was 32.2 kWh/(m² yr), which demonstrates magnificent energy-saving potential compared with the conventional air-conditioning system (around 49 kWh/(m² yr)).     

新风预处理概念、系统与应用

美国《ASHRAE标准62－1999》要求增大空调系统的设计新风量，降低室内相对湿度以提高室内空气品质。这样，空调系统的冷、湿负荷将增大。据此，提出了新风预处理概念，它是在基本保持原有的传统空气处理系统不变的前提下，对新风进行合适的预处理，以消除增加的新风对空调对象的干预，从而经济有效地改善室内空气品质。最后，给出了几种新风预处理系统及应用。     

温湿度独立控制空调系统设计方法

介绍了温湿度独立控制空调系统的设计方法及性能评价方法。详细介绍了其设计参数选取、负荷计算和设备选型方法等,研究了其与常规空调系统的差异。以某建筑为例,利用DeST软件模拟逐时负荷,分别进行温度、湿度控制系统的设备选型。     

A comparative study of different control strategies for indoor air humidity

There has been a rising concern in controlling the high indoor humidity of hot and humid countries. When an air-conditioned space experiences only part of its design heat load, its humidity tends to rise as a result of the air-conditioning system trying to control the indoor temperature by reducing its cooling capacity. In this study, the part-load dehumidification performances of three temperature control strategies are compared, namely, chilled water flow control, bypass air control and the variable air volume control. Coil simulations are employed to study the part-load performance of these control strategies. The coil model has been validated with experimental data to within ±6.5%. The relative humidity of a space depends of factors such as design sensible heat factor of the space, temperature control strategy employed and load condition experienced by the space. Simulation results have indicated that chilled water control strategy results in the highest indoor humidity throughout the range of conditions studied while variable air volume system provides highly effective dehumidification performance of the cooling coil. Bypass air control appears to be a good option for adoption as it is able to provide an acceptable humidity over a wide range of load conditions without having to affect the air movement within the space.     

The effect of heat-pipe air-handling coil on energy consumption in central air-conditioning system

A study was carried out to investigate the effect of heat-pipe air-handling coil on energy consumption in a central air-conditioning system with return air. Taking an office building as an example, the study shows that compared with conventional central air-conditioning system with return air, the heat-pipe air-conditioning system can save cooling and reheating energy. In the usual range of 22–26 °C indoor design temperature and 50% relative humidity, the RES (rate of energy saving) in this office building investigated is 23.5–25.7% for cooling load and 38.1–40.9% for total energy consumption. The RES of the heat-pipe air-conditioning system increases with the increase of indoor design temperature and the decrease of indoor relative humidity. The influence of indoor relative humidity on RES is much greater than the influence of the indoor design temperature. The study indicates that a central air-conditioning system can significantly reduce its energy consumption and improve both the indoor thermal comfort and air quality when a heat-pipe air-handling coil is employed in the air-conditioning process.     

Experimental study on a residential temperature-humidity separate control air-conditioner

According to the temperature and moisture characteristics and current problems experienced in the Yangtze River Area, a temperature-humidity separate control air conditioner was developed. This unit can remove indoor sensible heat and latent heat load separately, and adjust indoor temperature and humidity respectively, thus improve indoor comfort and reduce energy consumption. The air-conditioner consists of an air cooling evaporator and a water cooling evaporator. Orthogonal experiments were designed to study the influence of outdoor temperature, indoor temperature, indoor humidity, compressor frequency, and refrigerant distribution ratio in air cooling evaporator (RDRAE) on the unit performance. The results showed that the dehumidification capacity ranged from 0 to 4.02 kg/h; the EER ranged from 2.71 to 4.57; the cooling capacity ranged from 6822 to 13,080 W. The results can help to make the control logic of the unit, and be used as the basis of energy consumption calculation. Units with temperature and humidity separate control could save about 15.6% of the cooling energy consumption against traditional residential air-conditioner, and 47.8% against the traditional residential air-conditioner that could control both indoor temperature and humidity.     

天津站温湿度独立调节空调系统设计分析

天津火车站改扩建工程项目是2008年北京奥运会重点配套工程,该项目采用了基于溶液调湿技术的温湿度独立调节空调系统。针对该项目,本文详细阐述了温温度独立调节空调系统在各个区域的具体应用形式、特点及其节能效果。采用温湿度独立调节空调系统,该项目每年可节省120万元空调运行费用,并使夏季宅网尖峰负荷减小4400kW。不仅能显著节约空调系统运行费用,还可降低夏季城市电网尖峰负荷,缓解电力紧缺问题,提高热网利用效率,具有重大的经济效益和社会效益。     

室内空气设计参数与空调系统节能条件浅析

本文针对暖通空调系统设计过程中室内空气参数标准的合理取值对空调能耗的影响,探讨了空调负荷、空调能耗和空调系统节能的基本概念,对室内空气温度和相对湿度标准对空调系统能耗的影响进行了计算分析,结果表明科学认识室内空气参数标准的合理取值对空调系统能耗的影响对当前建筑节能意义重大;空调系统节能条件需要具体分析,针对不同类型的建筑和不同的空调方式,其室内空气设计标准的影响不同,空调过程设计对空调系统节能具有重要影响。另外,将典型空调案例的计算结果推广到一般工程,容易导致工程设计概念上的混淆。     

招商地产三洋3^#厂房改造工程温湿度独立调节空调系统应用介绍

招商地产三洋3^#厂房改造工程是华南地区将既有建筑改造为绿色、节能建筑的典型实践项目,充分考虑了将绿色、节能的建筑技术有机运用于既有建筑改造中,特别是采用基于溶液调湿技术的温湿度独立调节空调系统,使得该建筑比同期满足节能规范要求的新建建筑节能31％以上。本文通过对该项目温湿度独立调节空调系统的介绍,详细阐述了在华南地区应用的特点和具体布置形式,希望对广大一线设计师和从事绿色、节能建筑的工程技术人员有所裨益。     

毛细管平面空调系统简介

传统的空调系统普遍采用温湿度耦合的控制方法,存在能源利用品位上的浪费、难以适应温湿度比的变化以及室内空气品质差等问题,针对我国日益高涨的提高室内环境舒适性和降低建筑能耗的大好形势,介绍一种高效节能的室内环境调节系统:毛细管平面空调系统,分析了其具有的优点及面临的问题和机遇.