scholarly journals Estimating Potential Energy Savings in Compressed Air Systems

2012 ◽  
Vol 39 ◽  
pp. 204-211 ◽  
Author(s):  
Ryszard Dindorf
Author(s):  
Pawel Olszewski ◽  
Claus Borgnakke

The aim of this research is to estimate the influence of compressed air volumetric capacity on the energy consumption in systems equipped with oil-lubricated screw compressors. A mathematical model of oil-lubricated screw compressors has been proposed. The model is verified by comparing with real measurements, and overall uncertainty analysis is estimated. An in-house developed numerical code (c++) is used to calculate the energy consumption in 252,000 combinations. The final result can be used to estimate the energy efficiency of existing air systems and to assess potential energy savings due to changes in the operation of the system and its control strategy.


2019 ◽  
Vol 9 (6) ◽  
pp. 71-78
Author(s):  
Luis Marcos Castellanos ◽  
Hernan Hernandez-Herrera ◽  
Jorge I. Silva-Ortega ◽  
Vicente Leonel Martínez Diaz ◽  
Zaid García Sanchez

Author(s):  
Hernan Hernandez Herrera ◽  
Jorge Iván Silva-Ortega ◽  
Vicente Leonel Martínez Diaz ◽  
Aliana Gomez Pons ◽  
Zaid García Sanchez

2021 ◽  
pp. 1420326X2199241
Author(s):  
Hanlin Li ◽  
Dan Wu ◽  
Yanping Yuan ◽  
Lijun Zuo

In the past 30 years, tubular daylight guide systems (TDGSs) have become one of the most popular ways to transport outdoor natural light into the inner space in building design. However, tubular daylight guide systems are not widely used because of the lack of methods to evaluate methods on the suitability of the TDGSs. This study therefore summarizes the daylight performance metrics of TDGSs and presents the estimation methods in terms of field measurements, simulation and empirical formulae. This study focuses on the daylight performance and potential energy savings of TDGSs. Moreover, this study will be helpful for building designers to build healthy, comfortable and energy-saving indoor environment.


2021 ◽  
Vol 1154 (1) ◽  
pp. 012009
Author(s):  
H Hernández Herrera ◽  
D Patiño Villalba ◽  
E Noriega Angarita ◽  
J I Silva Ortega ◽  
C A Caraballo Echavarría

Energy Policy ◽  
2012 ◽  
Vol 45 ◽  
pp. 739-751 ◽  
Author(s):  
Jing Ke ◽  
Nina Zheng ◽  
David Fridley ◽  
Lynn Price ◽  
Nan Zhou

2021 ◽  
Author(s):  
Christopher L. K. Wang

As sleep is unconscious, the traditional definition of thermal comfort with conscious judgment does not apply. In this thesis sleep thermal comfort is defined as the thermal condition which enables sleep to most efficiently rejuvenate the body and mind. A comfort model was developed to stimulate the respective thermal environment required to achieve the desired body thermal conditions and a new infrared sphere method was developed to measure mean radiant temperature. Existing heating conditions according to building code conditions during sleeping hours was calculated to likely overheat a sleeping person and allowed energy saving potential by reducing nighttime heating set points. Experimenting with existing radiantly and forced air heated residential buildings, it was confirmed that thermal environment was too hot for comfortable sleep and that the infrared sphere method shows promise. With the site data, potential energy savings were calculated and around 10% of energy consumption reduction may be achieved during peak heating.


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