"可再生能源与建筑集成技术研究与示范"项目——课题二/子课题:小型硅胶-水吸附太阳能空调研制及应用

引言 随着社会的发展．节能和环保问题越来越受到各国的重视。生态建筑强调利用可再生的自然能源．而少消耗煤、石油等矿物燃料。太阳能具有清洁安全、无需开采和运输等优点，迎合了生态建筑的理念，近年来引起了越来越多的关注。     

太阳能吸附空调的全性能实验研究及其应用

研究了不同工作条件对硅胶-水吸附机组性能的影响,例如热水进口温度、冷却水进口温度、热水流量、冷水出口温度等因素对吸附制冷性能的影响。在北纬36°41′地区进行应用,经过测量计算,在夏日典型晴天条件下,集热器平均效率为0.36,吸附制冷机平均COP(性能系数)为0.44,平均太阳能COP值为0.16。测量结果表明,机组性能受多种工作条件影响。机组制冷性能随着热水进口温度、热水流量、冷水出口温度、太阳辐射强度的增加而增加,而随着冷却水进口温度的上升而降低。当热水进口温度为79.0℃,冷却水进口温度为25.4℃,冷水出口温度为13.7℃,制冷功率为17.9kW,COP可达0.63。当热水流量为2124kg/h(名义热水流量为3400kg/h),热水进口温度为79.9℃,冷却水进口温度为30.2℃,冷水出口温度为15.3℃时,制冷功率12.7kW,COP为0.42。     

管径对新型复合降膜蒸发器性能的影响

为实现无泵循环高效降膜蒸发换热,提出了基于蒸汽举送效应的新型复合降膜蒸发器。通过建立数学模型,针对管径的改变研究其水力特性和换热性能。结果表明：输运段管径的增加不仅提高了输送流量和高度比H/L(泵送高度与为克服管道阻力所需的浸没深度之比),而且强化了蒸发段的传热传质性能,提高整个系统的性能;而换热段管径的改变主要影响系统的传热传质性能,对输送段水力特性不产生影响。     

连续循环式吸附空气取水系统

引　言随着社会的发展,人类的活动范围越来越大.在海岛、沙漠等缺少淡水资源的地区,解决饮用水成为人们在这些地区进行活动的先决条件.空气中的水蒸气含量大、不受空间的限制、可循环再生,因此空气取水是解决这些地区饮用水的渠道之一.空气取水可以采用吸附式空气取水方式,目前     

采用新型循环方式的硅胶-水吸附式制冷机

The paper proposes an adsorption refrigeration system using silica gel and water as working pair with novel design. In this system, the adsorber, condenser and evaporator are housed in one vacuum chamber, forming an adsorption refrigeration unit. Two such units work alternatively to supply cooling continuously. The construction, parameters of the adsorber, condenser and evaporator and characteristics of the cycle are given. The experimental results demonstrate that the mass recovery process can significantly improve the cooling capacity and COP. The effects of evaporating temperature and cooling water inlet temperature on chiller performance are analyzed. Comparison of the novel system and conventional ones demonstrates that the novel system has a higher performance than the conventional ones with heat recovery process if the problem of cooling loss can be resolved.     

热管型船用吸附制冰机的设计

A heat pipe type adsorption ice maker with two adsorbers for fishing boats is designed by using ammonia as refrigerant and compound of activated carbon-CaCl2 as adsorbent. This type of heat pipe adsorber can solve the problem of incompatibility between ammonia, copper, seawater and steel. The working process of the ice maker with 8.7kg adsorbent per bed is simulated. The results show that the optimal semi-cycle time is about 9 min at the evaporating temperature of -15℃, where the corresponding cooling power, specific cooling power per kilogram adsorbent SCP and coefficient of refrigerant performance COP are respectively 3.6kW, 217W·kg-1 and 0.404.