نتایج جستجو برای: hvac system

تعداد نتایج: 2231969  

2011

The thermal environment and air quality in a passenger car can affect driver's and passengers' health, performance and comfort. Due to spatial and temporal variation of state variables and boundary conditions in the vehicle cab, the heating, ventilating and air-conditioning (HVAC) does not have to be designed to provide a uniform environment, especially because of individual differences regardi...

Journal: :Energies 2021

Detecting and diagnosing HVAC faults is critical for maintaining building operation performance, reducing energy waste, ensuring indoor comfort. An increasing deployment of commercial fault detection diagnostics (FDD) software tools in buildings the past decade has significantly increased buildings’ operational reliability reduced consumption. A massive amount data been generated by FDD tools. ...

2015
Mohammad Umair Zaki Dibya Prakash Mishra

This paper accentuate upon the application of Heating, Ventilation and Air-conditioning system in supporting the manufacture of quality pharmaceutical products. The HVAC system supply conditioned air to coveted areas of indoor surroundings to stimulate and maintain required temperature, humidity, ventilation and air-purity. The Good Manufacturing Practice for HVAC services embraces number of is...

2013
M. Kreutz R. Haber

The development of a better system for a HVAC system promises savings of energy and conservation of resources. Predictive Functional Control is applied for the temperature control in order to achieve a better control performance than with a PI(D) control. The research work is the result of cooperation with the company A. Nattermann & Cie GmbH and the University of Applied Sciences Cologne under...

2012
Andrew Kusiak Guanglin Xu

The energy consumption of a heating, ventilating and air conditioning (HVAC) system is optimized by using a data-driven approach. Predictive models with controllable and uncontrollable input and output variables utilize the concept of a dynamic neural network. The minimization of the energy consumed while maintaining indoor room temperature at an acceptable level is accomplished with a bi-objec...

1999
James E. Braun Ray W. Herrick

Automated fault detection and diagnostic (FDD) systems have the potential to reduce equipment downtime, service costs, and utility costs. However, very few commercial products exist and the ones that do exist are very specialized. This may be surprising to some, considering that FDD is very well developed for other applications such as for nuclear power plants, aircraft, chemical process plants...

1998
S. R. Shaw S. B. Leeb

ISSN: 1078-9669 (Print) 1938-5587 (Online) Journal homepage: http://www.tandfonline.com/loi/uhvc20 Detection and Diagnosis of HVAC Faults via Electrical Load Monitoring S. R. Shaw , L. K. Norford , D. Luo & S. B. Leeb To cite this article: S. R. Shaw , L. K. Norford , D. Luo & S. B. Leeb (2002) Detection and Diagnosis of HVAC Faults via Electrical Load Monitoring, HVAC&R Research, 8:1, 13-40 To...

Journal: :energy equipment and systems 2015
behrang sajadi amir baniassadi

energy crisis, global warming and other environmental issues are what motivate researchers to find new strategies to reduce energy consumption in buildings. recently, using phase change materials (pcm) in the building’s envelopes has drawn significant attention as an energy-saving method, which helps in increasing the building’s thermal capacity. in the present research, the effects of the main...

2017
Qian Huang Chen Mao

Smart building, which delivers useful services to residents at the lowest cost and maximum comfort, has gained increasing attention. HVAC equipment is a particularly expensive and energy consuming of building operation. A variety of emerging information technologies has been adopted. As a result, the concept of “demanddriven HVAC control” is a hot research topic. In this work, we investigated t...

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