Study of comprehensive comfort evaluation based on fuzzy method in the ship’s cabins

• Published in: Thermal science and engineering progress Vol. 53; p. 102738
• Main Authors: Liu, Hongmin, Zhan, Lingyi, Lin, Xincheng, Gong, Zhihao
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2024
• Subjects: Comprehensive comfort; Comprehensive fuzzy evaluation; Environmental classification system; Ship’s cabin; Thermal comfort; Vibration annoyance rate; Comprehensive comfort; Thermal comfort; Vibration annoyance rate; Environmental classification system; Ship’s cabin; Comprehensive fuzzy evaluation
• ISSN: 2451-9049
• DOI: 10.1016/j.tsep.2024.102738

•Thermal environment, noise environment, vibration environment and illumination environment in the ship’s cabins in spring and summer was investigated.•A comprehensive comfort assessment in the ship’s cabins was proposed based on combined weights and the fuzzy evaluation.•Vibration has a greater impact on thermal sensation than noise. With the rapid development of the shipping transportation, the comfort of the cabin environment is becoming increasingly critical. This paper presents a comprehensive comfort assessment method for indoor environment comfort in ship’s cabins based on the combined weights and membership functions. The environment parameter classification system was established to determine parameter comfort grade and correspondence membership functions were constructed. The field measurement on five factors of three cabins were conducted and correspondence 290 questionnaire surveys for subject’s comfort were collected. Then, the questionnaire for analytic hierarchy process (AHP) method was collected from twelve experts to obtain the subjective weights. From filed studies, the objective weight scheme was calculated using entropy method (EM). The combined weights were obtained synthesizing the results of AHP and EM. The environmental parameter classification system was verified through comparisons. The comprehensive comfort index for ship’s cabins were finally provided by combining factor weights and membership degree, and comprehensive comfort indexes are in agreement with the weighted comfort vote (WCV) in three cabins. This result verified the prediction performance of the comprehensive method. Furthermore, the influence of noise and vibration on TSV has been investigated. vibration has a more significant impact on thermal sensation than the sound when sound varied in the range of 57.5 dB(A) to 65 dB(A)), and vibration varied in the range of 0.12 m/s2 r.m.s to 0.15 m/s2 r.m.s.