重庆时时彩后一必中|重庆时时彩的规律

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填料塔英文献和中文翻译

时间:2018-04-14 13:02来源:毕业论文
This paper presents the experimental tests on the chemical dehumidi?cation of air by a liquid desiccant and desiccant regeneration carried out in an absorption/desorption tower with random packing. The experimental set-up is fully describe
This paper presents the experimental tests on the chemical dehumidi?cation of air by a liquid desiccant and desiccant regeneration carried out in an absorption/desorption tower with random packing. The experimental set-up is fully described together with measure-ments, procedures, data reduction, and accuracy. The experimental tests include 46 de-humidi?cation runs and 38 desiccant regeneration runs carried out with the traditional hygroscopic solution H2O/LiBr and the new solution H2O/KCOOH in the typical op-erative ranges of air conditioning applications. The experimental results are reported in terms of humidity reduction, desiccant concentration change, and tower ef?ciency. The experimental tests show that chemical dehumidi?cation of air by liquid desiccants ensures consistent reduction in humidity ratio, which is suitable for the application to air condi-tioning or drying processes. The experimental results are also compared to a one-dimensional simulation code of a packed tower: a fair agreement was found between experimental and calculated performance. 21204
1 Introduction
The sorption dehumidi?cation of air by liquid desiccants could
represent an interesting alternative to traditional dehumidi?cation
processes by air cooling below the dew point which involve both
cooling and heating capacity. Chemical dehumidi?cation by solid
or liquid desiccants allows consistent humidity reduction and its
energy cost, due to desiccant regeneration, can be signi?catively
reduced by proper heat recovery. This process is also useful in
reducing airborne microbial contamination.
Chemical dehumidi?cation had till now few applications. The
most widespread systems are desiccant wheels, which use solid
sorbents ~adsorption!, whereas dehumidi?ers using liquid desic-
cants ~absorption!, as a packed column, seem to be more interest-
ing, as they allow heat recovery on desiccant regeneration. These
dehumidi?cation units could be usefully integrated within innova- 本文来源:http://www.mamitama.com/a/www.ifore.com.cn/

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tive HVAC plants, particularly with high latent and ventilation
loads or when a high indoor air quality is required. The authors of
the present paper have designed HVAC plants based on chemical
dehumidi?cation for an educational building @1# and for an infec-
tious disease hospital @2#. Recently an innovative HVAC system
based on chemical dehumidi?cation by liquid desiccants has also
been proposed by @3#. Dehumidi?cation units based on liquid des-
iccants have been commercially available since about 1935, and
have been used in a variety of industrial and institutional HVAC
systems @4#. More recently, in 1997, a compact air conditioning
system, which includes a dehumidi?cation and a regeneration unit
integrated with a regenerative heat pump, was commercialized
@5#.
In open literature it is possible to ?nd several works on the
theoretical analysis of heat and mass transfer in the packed col-
*Corresponding author.
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF ME-
CHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY
ENGINEERING. Manuscript received by the ASME Solar Energy Division, Nov.
2002; ?nal revision, Apr. 2003. Associate Editor: V. C. Mei.umns for chemical dehumidi?cation of air @6–8# together with
experimental data on the performance of absorption/desorption
packed towers @9–14#.
This paper presents the experimental tests on the sorption de-
humidi?cation of air by a liquid desiccant and desiccant regenera-
tion carried out in an absorption/desorption tower with random
packing by using the traditional hygroscopic solution H2O/LiBr
and the new solution H2O/KCOOH in the typical operative ranges
of air conditioning applications. The new desiccant, usually used
as brine, is less corrosive and expensive than the traditional ones 填料塔英文献和中文翻译:重庆时时彩的规律/a/fanyi/20180414/13304.html
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