scholarly journals A Comprehensive Evaluation Method for Air-Conditioning System Plants Based on Building Performance Simulation and Experiment Information

Buildings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 522
Author(s):  
Yan Lyu ◽  
Yiqun Pan ◽  
Xiaolei Yuan ◽  
Mingya Zhu ◽  
Zhizhong Huang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Air Conditioning ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Construction Project ◽  
Building Performance ◽  
Performance Simulation ◽  
Air Conditioning System ◽  
Building Performance Simulation ◽  
Comprehensive Evaluation Method

During the design stage of an HVAC (heating, ventilation, and air conditioning) system in a construction project, designers must decide on the most workable design scheme for the plant room in the building based on the evaluation of multiple aspects related to system performance that need to be considered, such as energy efficiency, economic effectiveness, etc. To solve this problem, this paper proposes a comprehensive evaluation method for the plant rooms of centralized air-conditioning systems in commercial buildings. This new method consists of two analyses used in tandem: Building Performance Simulation (BPS) models and a collection of real HVAC design cases (the carried-out design solutions). The BPS models and a knowledge of the reduction approach based on Rough Set (RS) theory are used to generate data and weight factors for the indices of energy efficiency; and the real design cases are employed with a heuristic algorithm to extract the compiled empirical information for other evaluation items of the centralized HVAC system. In addition, this paper also demonstrates an application in an actual case of a building construction project. By comparing the expert decision-making process and the evaluation results, it is found that they are basically consistent, which verifies the reasonability of the comprehensive evaluation method.

Study on Air-Conditioning Fiber/Cotton Blended Yarn Sizing Using Less PVA

2012 ◽  
Vol 627 ◽  
pp. 80-84
Author(s):  
Wen Lin Zou ◽  
Hui Juan Liu
Keyword(s):  
Air Conditioning ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Breaking Strength ◽  
Orthogonal Design ◽  
Fuzzy Comprehensive Evaluation ◽  
Quadratic Regression ◽  
Comprehensive Evaluation Method ◽  
Blended Yarn ◽  
Testing Data

The sizing of air-conditioning fiber/cotton blended yarn was carried out according to the method of quadratic regression orthogonal design. The sizing ingredients mainly consist PR-S, denatured starch and less PVA. The properties of the sized yarns such as breaking strength, breaking elongation, wear resistance and hairiness index were tested base on the practical production demands． The testing data was analyzed by using fuzzy comprehensive evaluation method. The comprehensive evaluation result of the sizing performance shows the synthetic performance of sizing will be better when the percentage of PVA, denatured starch and PR-S are 2.735%, 4.823% and 3.823%.

Research on Comprehensive Evaluation Method of Enterprise Energy Efficiency

2012 ◽  
Vol 524-527 ◽  
pp. 2962-2967
Author(s):  
Li Fang Yang ◽  
Jin Song Wang ◽  
Ai Mei Yan ◽  
Yu Na Liu
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Mean Value ◽  
Demand Side ◽  
Evaluation Result ◽  
Comprehensive Evaluation Method ◽  
Level Model ◽  
Demand Side Response

In the paper the energy consumption level model is established. The energy efficiency level of the enterprise is evaluated from three angles including the historical trend, the industry enterprise mean value and order of whole enterprise, and then grades are given for them. And the reasonable weight is given by synthesizing evaluation results of three angles, to get the comprehensive evaluation result. Then reasonable proposals are proposed for the enterprise based on the assessment results, which make the enterprise adjust energy-using behavior, to reduce the energy consumption and save electricity, and finally to provide decision-making basis for enterprise demand side response, saving energy and reducing consumption.

Research for Knitted Fabric Made of Outlast Air-Conditioning Fiber

2012 ◽  
Vol 184-185 ◽  
pp. 1505-1509
Author(s):  
Zhen Wu ◽  
Jia Guang Meng ◽  
Shao Fang Chen
Keyword(s):  
Air Conditioning ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Test Method ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Moisture Permeability

The article briefly introduced the wearing characteristic and the test method of Outlast Air-conditioning fiber knitted fabrics, like comfortableness, fastness, and the moisture permeability and so on. Finally use the fuzzy comprehensive evaluation method to analyze and estimate the wearing characteristic of Outlast Air-conditioning fiber knitted fabric. And then reach a kind of stitch with the optimum wearing characteristic.

scholarly journals Assessments on Sustainability Potential by Upgrade of Existing Heritage Buildings: a case study of Liyuan Courtyard in Qingdao, China

2020 ◽  
Author(s):  
Yi Huang ◽  
Yufan Xiao ◽  
Fan Yu
Keyword(s):  
Energy Efficiency ◽  
Energy Performance ◽  
Building Performance ◽  
Performance Simulation ◽  
Building Performance Simulation ◽  
Positive Effects ◽  
Energy Behavior ◽  
Heritage Buildings ◽  
Heritage Building

Abstract Background: The existing heritage buildings are considered as symbols of the original spirit of a city, which also contains vitality and resilience through centuries. In Qingdao, the Liyuan courtyard styles are still existed as a very regional and representative colonial residential architecture form in the urban development history from 1900s in this city. Method: The research here made the hypotheses of the heritage buildings can regain its authentic appearance while achieve energy efficiency in building performance through optimization and renovation strategies. The sustainability potentials assessment is discussed and evaluated with field investigation in a Liyuan building case study by on-site observation and building performance simulation analysis of two renovation options.Result and Discussion: One model with façade supplemented in the insulation layers in the envelope walls and another model with further upgrade with consideration of recycling materials mixed were discussed and estimated with building performance simulation method. Both scenarios improved the energy efficiency, while the advanced model could achieve better result in the building energy behavior dramatically.Conclusion: This research paper verified the hypotheses of sustainability embodied in Liyuan buildings. It also confirmed the vitality and resilience could be regained through history with considerable and reasonable guideline in strategy together with personal alternatives. Technologies innovation helps to improve their energy performance by reducing consumption or self-supplying on the existing buildings renovation actions. Every specific choices of renovation action could achieve low energy goals and impose optional positive effects on the behavior of the living comfort preference. Multicriteria considerations might influence the balanced between different factors when making decisions in the heritage building restoration and it is expected to empower the fresh glory in the development of heritage building protection and restoration.

scholarly journals Re-use of historic buildings and energy refurbishment analysis via building performance simulation: A case study

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2335-2354 ◽  
Author(s):  
Nenad Sekularac ◽  
Dragoslav Sumarac ◽  
Jasna Cikic-Tovarovic ◽  
Milos Cokic ◽  
Jelena Ivanovic-Sekularac
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy Sources ◽  
Simulation Method ◽  
Positive Outcome ◽  
World Heritage Site ◽  
Building Performance ◽  
Historic Buildings ◽  
Performance Simulation ◽  
Building Performance Simulation ◽  
Efficiency Measures

This paper analyses the possibility to apply energy refurbishment measures in restored historic buildings in order to ensure reuse. The objective of the paper is to provide an appropriate methodology for the structural restoration of historic buildings, their re-use and sustainable energy refurbishment in accordance with current needs and conservation principles. The study provides the analysis and evaluation of the realized goals regarding energy refurbishment and energy efficiency. The presented historic buildings belong to Hilandar Monastery, Mount Athos, Greece. Mount Athos has been listed in UNESCO World Heritage Site for decades. The paper deals with the expert analysis of abandoned and devastated structures included in the Haybarn Complex. This paper provides a positive outcome of the performed restoration in terms of energy refurbishment and repurpose, since these buildings were turned into unique accommodation facilities for visitors. This accomplishment can be seen as a useful recommendation for improving energy efficiency of historic buildings during their restoration. All the undertaken methods are in accordance with the environmental protection requirements. This study is a practical observation and analysis of energy refurbishment in the field of restoration of listed buildings. This certainly is the most important contribution of this paper. All energy efficiency measures and renewable energy sources were carried out in compliance with conservation requirements and visual authenticity of historic structures. Assessment and analysis of energy efficient refurbishment via building performance simulation method and energy efficiency optimization was applied to several different models of restoration that was carried out in the Haybarn Complex.

A Double-Layers Energy Efficiency Evaluation Method of Central Air-Conditioning System

2013 ◽  
Vol 860-863 ◽  
pp. 1666-1669
Author(s):  
Bing Wen Wang ◽  
Yuan Yuan Liu ◽  
Shan Shan Shi ◽  
Gan Zhou ◽  
Shuang Hu Wang
Keyword(s):  
Energy Efficiency ◽  
Air Conditioning ◽  
Evaluation Method ◽  
High Energy ◽  
National Standard ◽  
Double Layers ◽  
Efficiency Evaluation ◽  
Air Conditioning System ◽  
Central Air Conditioning ◽  
Energy Efficiency Evaluation

It is necessary to monitor and optimize work status of central air-conditioning system (CACS) due to its high energy consumption. According to national standard, this paper designed a practical energy-efficiency evaluation method with double-layers structure. The upper-layer indicator reflects the whole energy efficiency of CACS. The lower-layer indicators reflect the energy efficiency of each subsystem of CACS, such as refrigeration system, chilled water system and terminal system. Using this double-layers evaluation system, the managers of CACS can not only observe the whole energy efficiency level but also find out the weak point of the system.

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