毕业论文

当前位置: 毕业论文 > 外文文献 >

博物馆空调节能策略英文文献和中文翻译

时间:2017-08-24 10:51来源:毕业论文
artwork conservation and then for the visitor thermal comfort. Considering that the air-conditioning sys-tem has to operate constantly, suitable techniques permit to obtain useful energy savings, allowing, how-ever, a good dynamic microclima
artwork conservation and then for the visitor thermal comfort. Considering that the air-conditioning sys-tem has to operate constantly, suitable techniques permit to obtain useful energy savings, allowing, how-ever, a good dynamic microclimatic control. 12692
In this paper a case study is presented about various strategies used to reduce energy requirements for
HVAC systems in an exhibition room of a modern museum. Using the dynamic simulation code DOE 2.2
and typical climatic hourly data sets, the annual energy use for an all-air system has been calculated, as
well as the savings obtainable using different techniques, such as dehumidification by adsorption (des-
iccant wheel – saving equal to 15% with respect to a base configuration), total energy recovery from
the relief air (passive desiccant – 15%), outdoor airflow rate variation (demand control ventilation –
45%). Moreover, the correspondence has been analyzed between the energy request and the admitted
variation of indoor temperature and relative humidity: changing the admitted indoor RH range from
50 ± 2% to 50 ± 10%, energy savings around 40% have been obtained. As regards the thermal-hygrometric
performance, an optimal control of temperature has been guaranteed with all the configurations, while
the best performance in RH control has been obtained with the desiccant system.
Considering a simple payback analysis, if the artworks preserved in a museum are particularly sensitive
to indoor humidity variation, a desiccant system should be properly used; on the contrary, when the
indoor humidity control is not strongly needed, the use of a HVAC system with demand control ventila-
tion is advisable, because of the lowest payback value. The system with total energy recovery presents
intermediate features.
 2008 Elsevier Ltd. All rights reserved.1. Introduction
The conservation of the artworks requires the control of the in- 源自六/维"论\文|网.加7位QQ3249"114 www.lwfree.cn
door microclimatic conditions to limit degradation phenomena.
Thus, a suitable HVAC system is often necessary for the museum
environment, in order to guarantee safety values of indoor ther-
mal-hygrometric parameters and air velocity and, over all, to min-
imize the changes of these parameters from the design values. The
main causes of the dangerous variations of the microclimatic con-
ditions in the exhibition rooms are the thermal loads due, respec-
tively, to the outdoor air (ventilation load) and to the visitors; the
last one depends on the degree of overcrowding and is generally
greatly variable [1–4].
On the other hand, considering the continuous working of the
air-conditioning system, during all the year and 24 h per day, the
adoption of suitable techniques is useful to obtain considerable en-
ergy savings [3,5].In this paper, a case study relative to the HVAC systemfor a sim-
ulated modern museum is presented. The operating costs of an all-
air system have been evaluated, using different energy saving
strategies, such as the dehumidification by adsorption, the total
energy recovery from the relief air, the demand control ventilation.
For this purpose, the dynamic simulation code DOE 2.2 [6] has
been used, as well as typical climatic hourly data TRY [7]. The ef-
fects of these energy saving strategies on indoor T and RH control
have been also analyzed, as well as the correlation between the po-
tential annual energy savings and the admitted variation of indoor
T and RH. Finally, a simple payback analysis has been carried out, in
order to know whether the energy conservation measures pro-
posed are cost effective.
2. Microclimatic control in museums
2.1. Microclimatic requirements
Interactions between the museum and the outside environ-
ment, if not opportunely controlled, may accelerate the processesof deterioration, often irreversible, of both the building envelope it- 博物馆空调节能策略英文文献和中文翻译:http://www.lwfree.cn/fanyi/20170824/12569.html
------分隔线----------------------------
推荐内容