Penglong Song’s research while affiliated with Xi'an Jiaotong University and other places

The air pollution and fluctuation of environmental parameters are the main causes of desiccation cracking, efflorescence of relics in archaeology museum. In this research, an air curtain system was proposed to separate the local environment in funerary pit from the large-space exhibition hall. An investigation of the air curtain was carried out to evaluate the integrated performance and to obtain the optimal jet elevation and velocity of the air curtain. The results show that the optimal jet elevation and jet velocity of the air curtain system were 3° and 5.5m/s, respectively. The preservation environment in the funerary pit can be greatly improved by the air curtain, the temperature difference between the top and bottom of funerary pit could be reduced to only 0.2℃. Moreover, the isolation efficiency of the air curtain system can reach to 89%.

The environmental control in archaeology museum buildings should take into account the requirements of both visitors’ thermal comfort and relics preservation. However, the environ-mental conditions for the thermal comfort of visitors are usually different to those for relics preservation, and the specialized needs of the latter are usually ignored due to financial and technological limitations. In this paper, an independent environmental control method employing a split air conditioning system for visitor comfort and a displacement ventilation system for relic preservation was proposed. An experimental study has been carried out to examine the feasibility and performance of the method. The results show that both air conditioning systems could be operated independently with different working parameters and operation models. Additionally, the different environmental needs of visitors and relics were simultaneously satisfied with this energy-saving method.

An energyefficient displacementventilation (DV) system was proposed to independently control the local preservation environment of funerary pit from the large-space exhibition hall an archaeology museum. A series of experimental tests were conducted to investigate the performance and validate the feasibility of the DV system for preservation of historical terracotta figurines in their semi-exposed pits in the exhibition hall. The experimental results showed that the DV system provides a feasible and energy-saving strategy for controlling the preservation environment independently.