共查询到19条相似文献,搜索用时 46 毫秒
1.
2.
以空气源热泵作为太阳能热水系统的辅助热源,将太阳能热水系统和空气源热泉结合在一起,是目前最节能、最环保的家用热水系统."中国太阳能热利用产业联盟秘书长霍志臣说. 相似文献
3.
1引言随着居民对生活热水需求的不断增加,相应的制取生活热水的能耗也越来越多。继传统的电热水器、燃气热水器、太阳能热水器之后,热泵热水器以其安全节能、使用方便、全天候运行等特点,迅速成为热水器市场的一颗耀眼的明星,受到了人们的关注。空气源热泵热水器主要是 相似文献
4.
1引言
随着居民对生活热水需求的不断增加,相应的制取生活热水的能耗也越来越多。继传统的电热水器、燃气热水器、太阳能热水器之能、热泵热水器以其安全节能、使用方便、全天侯运行等特点,迅速成为热水器市场的一颗耀眼的明量,爱到了人们的关注。空气源热泵热水器主要是从空气中吸收热量来加热热水,与电热水器相比,可以节能70%左右的电量; 相似文献
5.
6.
首先介绍了空气源热泵热水器(机组)的原理、组成、热泵热水系统组成、运行特点等。接着对运行成本进行了分析,并对热泵热水器(机组)的运行成本与燃气锅炉、燃油锅炉、容积式电热水器进行比较。突出了空气源热泵热水器(机组)其节能、环保、安全的优越性及广阔的市场前景。 相似文献
7.
首先介绍了空气源热泵热水器(机组)的原理、组成、热泵热水系统组成、运行特点等。接着对运行成本进行了分析,并对热泵热水器(机组)的运行成本与燃气锅炉、燃油锅炉、容积式电热水器进行比较。突出了空气源热泵热水器(机组)其节能、环保、安全的优越性及广阔的市场前景。 相似文献
8.
9.
首先介绍了空气源热泵热水器(机组)的原理,组成,热泵热水系统组成、运行特点等.接着对运行成本进行了分析,井对热泵热水器(机组)的运行成本与燃气锅炉、燃油锅炉、容积式电热水器进行比较.突出了空气源热泵热水器(机组)其节能、环保、安全的优越性及广阔的市场前景. 相似文献
10.
本文以某高校洗浴中心的空气源热泵辅助太阳能热水机组为研究对象,综合考虑外部光照条件、水箱温度、用水时段等多种因素,设计空气源热泵辅助太阳能热水机组的自动监控系统,实现机组全天候自动运行,有效节约了能源。 相似文献
11.
12.
13.
This study describes the results of simulation of the temperature field and the stress-strain state of membrane-type gastight water walls of boiler units using the finite element method. The methods of analytical and standard calculation of one-sided heating of fin-tube water walls by a radiative heat flux are analyzed. The methods and software for input data calculation in the finite-element simulation, including thermoelastic moments in welded panels that result from their one-sided heating, are proposed. The method and software modules are used for water wall simulation using ANSYS. The results of simulation of the temperature field, stress field, deformations and displacement of the membrane-type panel for the boiler furnace water wall using the finite-element method, as well as the results of calculation of the panel tube temperature, stresses and deformations using the known methods, are presented. The comparison of the known experimental results on heating and bending by given moments of membrane-type water walls and numerical simulations is performed. It is demonstrated that numerical results agree with high accuracy with the experimental data. The relative temperature difference does not exceed 1%. The relative difference of the experimental fin mutual turning angle caused by one-sided heating by radiative heat flux and the results obtained in the finite element simulation does not exceed 8.5% for nondisplaced fins and 7% for fins with displacement. The same difference for the theoretical results and the simulation using the finite-element method does not exceed 3% and 7.1%, respectively. The proposed method and software modules for simulation of the temperature field and stress-strain state of the water walls are verified and the feasibility of their application in practical design is proven. 相似文献
14.
15.
16.
针对GB/T19141-2011《家用太阳能热水系统技术条件》及GB26969-2011《家用太阳能热水系统能效限定值及能效等级》固化了家用太阳能热水系统的质量性能及强制规范;但这些方法也存在着一些问题,如:由于测试当天的太阳累计辐照度、当天的环境温度等不确定因素的直接或间接的影响,使得不同起始温度测试的集热器的热性能参数不具有可比性,或者规定天数内测试的整机日有用得热量存在误差.为此,我们研究利用数值理论《二维积分法》量化测试结果来解决这些问题.本文将针对该方法进行详细论述,并举例说明应用结果. 相似文献
17.
O. E. Stepanov V. E. Karnaukhov A. M. Khudyakov Yu. N. Eikhorn A. V. Bulanov M. L. Lukashenko I. M. Dikarev O. V. Logashev 《Thermal Engineering》2014,61(3):203-209
Several relationships were analyzed to calculate the heat transfer during boiling water with underheating involving these implemented in RELAP5 and KORSAR codes. The errors of the presented relationships are evaluated using modeling of the experimental data on boiling with underheating in vertical channels. It is shown that the quantitative evaluations of the wall temperature during boiling with underheating, which are obtained applying the codes, can be refined by means of the involvement of the alternative trailing relationships, which is topical in connection with the influence of surface boiling on the intensity of the nodular (hot-spot) corrosion of the fuel element claddings. 相似文献
18.
在我国冬季的采暖方式以前主要以集中供暖为主,特别是在长江以南地区基本上没有供暖的要求,近年来随着经济的发展和人民生活水平的提高,对冬季供暖的要求也有了较大的提高,长江以南的许多地区也逐渐的提出了供暖的要求,同时供暖的方式也有了重大的变化,南方由没有供暖设施发展到安装供暖设施,北方由集中供暖的方式向多样化的供暖方式转变,这就给供暖方式和新供暖设施提供了较大的发展空间。 相似文献
19.
以大庆油田某宾馆楼顶安装集中供热水系统为例,分析了北方高寒地区屋顶太阳能集中供应热水系统运行中容易出现的管路冻堵、炸裂现象,以及该系统与原有建筑屋顶楼板结合中存在的问题,并提出了相应防范及解决措施,即管路防冻温控技术、防炸管及炸管报警技术.实践证明,采取有效控制措施,该系统在北方高寒地区可以达到安全稳定运行,实现经济节能运行效果. 相似文献