Sheng Jun, Miao Xiaoping, Wei Huan, et al. Evaluated Method for Air-conditioning System in Protective Engineering[J]. Journal of refrigeration, 2019, 40(1).
DOI:
Sheng Jun, Miao Xiaoping, Wei Huan, et al. Evaluated Method for Air-conditioning System in Protective Engineering[J]. Journal of refrigeration, 2019, 40(1). DOI: 10.3969/j.issn.0253-4339.2019.01.094.
Evaluated Method for Air-conditioning System in Protective Engineering
According to the features of protective engineering
an index for energy efficiency evaluation of an air-conditioning system is proposed
which is named as operating-demand energy efficiency ratio. Its definition and calculation method are provided in this paper. The energy efficiency evaluation strategy of an air-conditioning system is established from the whole system and its components
and the limiting values of the energy efficiency are provided. By taking a small underground engineering in hot summer and cold winter zones as an example
the energy efficiency evaluation of the air-conditioning system was carried out. The evaluation result shows that the system exhibited a daily low level of energy efficiency. On the basis of the result
the original project was retrofitted
and the energy efficiency of the system was improved by 18.9%
which verifies the feasibility and rationale of the proposed evaluation method.