A cost effective and non-intrusive method for performance prediction of air conditioners under fouling and leakage effect

2020 ◽  
Vol 42 ◽  
pp. 100856
Author(s):  
Sholahudin ◽  
Niccolo Giannetti ◽  
Seiichi Yamaguchi ◽  
Kiyoshi Saito ◽  
Katsuhiko Tanaka ◽  
...  
Keyword(s):  
Performance Prediction ◽  
Cost Effective ◽  
Air Conditioners ◽  
Leakage Effect

scholarly journals IoT Technology with Fuzzy Logic Control Integrated System to Achieve Comfort Environment

2021 ◽  
Vol 12 (3) ◽  
pp. 1409-1414
Author(s):  
A Miqdad Et.al
Keyword(s):  
Fuzzy Logic ◽  
Power Consumption ◽  
Fuzzy Logic Control ◽  
Cost Effective ◽  
Integrated System ◽  
Air Conditioner ◽  
Cooling Device ◽  
Air Conditioners ◽  
Logic Control ◽  
Internet Of Thing

Internet of Thing technology is known for its capability to collect and store a massive amount of data for further research development. Researcher widely utilizes this technology as it has become a very convenient tool with a cost-effective advantage. Practically, the calculation is made before determining the best cooling device for every room with temperature, humidity and power consumption being an important element to be taken into account. This paper present the practical approach to acquire data using WSN and IoT technology which then lead to the development of fuzzy logic control of the air conditioner with the aim to reduce its overall power consumption. Classroom equipped with two non-inverter air-conditioners with 4HP each used as a testbed.

scholarly journals Development of a 1-D Performance Prediction Model for Pumps as Turbines

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 682 ◽  
Author(s):  
Michele Stefanizzi ◽  
Tommaso Capurso ◽  
Marco Torresi ◽  
Giuseppe Pascazio ◽  
Sergio Ranaldo ◽  
...  
Keyword(s):  
Prediction Model ◽  
Performance Prediction ◽  
Cost Effective ◽  
Blade Angle ◽  
Small Hydropower ◽  
Hydraulic Losses ◽  
Cost Effective Alternative ◽  
Geometrical Information ◽  
Turbine Mode ◽  
Flow Deflection

Pumps as turbines (PaTs) are becoming more and more attractive in Small Hydropower. PaTs are considered a cost-effective alternative to conventional turbines as long as their turbine characteristic curves can be predicted. Indeed, manufacturers need of a tool that could support them to predict the turbine mode performance from the knowledge of pump characteristics, in order to be competitive on the market. In this framework, a new 1-D prediction model is proposed for manufacturers in order to predict the entire characteristic of a PaT, by taking into account detailed geometrical information of the machine, hydraulic losses and the influence of the flow deflection with respect to the outlet blade angle of the runner during turbine operation.

Appliance and Equipment Efficiency Standards

2002 ◽  
Vol 27 (1) ◽  
pp. 159-192 ◽  
Author(s):  
Steven Nadel
Keyword(s):  
Energy Efficiency ◽  
Energy Use ◽  
Minimum Energy ◽  
Cost Effective ◽  
The United States ◽  
The European Union ◽  
Air Conditioners ◽  
Adverse Impacts ◽  
Setting Process ◽  
Energy Efficiency Standards

▪ Abstract  Minimum energy efficiency standards are regulations that require products to meet specific energy efficiency requirements. Standards have been adopted in 17 countries plus the European Union. Standards have been set on more than 35 products, with refrigerators, air conditioners, ballasts, and freezers being the most common. Based on the available evidence, standards appear to be a very effective energy-saving policy. They have reduced energy use substantially in the United States and made good initial progress in other countries. The standards that have been implemented thus far appear to be cost effective to consumers and result in minimal adverse impacts on manufacturers. Available evidence indicates that the costs of actually implementing standards are commonly less than estimates made by manufacturers and government agencies during the standard-setting process. Standards are frequently a useful complement to other policies such as product labeling, incentives, and voluntary agreements. However, standards are not appropriate for all products and situations.

scholarly journals Speed control of robust position sensor less PMBLDC motor by Fuzzy controller

2021 ◽  
Vol 309 ◽  
pp. 01063
Author(s):  
Shravani Sattu ◽  
Vinay Kumar Awaar ◽  
Praveen Jugge
Keyword(s):  
Fuzzy Controller ◽  
Low Cost ◽  
Cost Effective ◽  
Suggested Approach ◽  
Air Conditioners ◽  
Control Approach ◽  
Brushless Dc ◽  
Low Pass ◽  
Permanent Magnet Brushless Dc ◽  
The Cost

The aim of this work is to present a novel mechanical sensor-less control approach for permanent magnet brushless DC (PMBLDC) motors based on speed independent H functions. The starting of the motor and driving it from a low speed to the rated speed are two significant problems in sensor-less operation of PMBLDC motor drives. The commutation moment is determined using a speed-independent H function. Since the commutation instant is speed independent, it may be anticipated even at low speeds. The H function is entirely dependent online voltages, which simplifies and reduces the cost of the whole system. The suggested approach eliminates the need for analogue filtering and phase correction. Digital low pass filters and digital phase compensators are used to remove commutation ripple from line voltages. This results in a system that is small, simple to use, and cost effective. This economical option is ideal for low-cost equipment such as fans, air conditioners, refrigerators, and vacuum cleaners. The suggested method is implemented using a fuzzy controller to demonstrate the proposed sensor-less technique’s efficacy for wide speed variations.

A Cost Effective Implementation of a Voice Assisted Home Automation System

2014 ◽  
Vol 704 ◽  
pp. 390-394 ◽  
Author(s):  
B. Bharathi ◽  
Sidhartha Chatterjee
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Electrical Equipment ◽  
The State ◽  
Automation System ◽  
Home Automation ◽  
Air Conditioners ◽  
Effective Implementation ◽  
Automation Systems ◽  
Home Automation System

Home Automation Systems are mainly targeted towards people with physical difficulties for movement. The proposed Voice Assisted Home Automation System (VAHAS) enables one to control all electrical equipment and peripheral devices by means of just one’s voice. By means of interfacing the devices (which could include lights, televisions, air conditioners and so on) with the Linux powered main device running our software, via RF enabled switches, the system responds to the user’s voice commands and intelligently activates, deactivates and changes the state of the appliances. The paper elucidates the actual implementation of a low cost device and shows the results produced by the system. Scalability and customer accessibility of the system is also considered during design.

The application of electron microscopy to diagnosis in gynecologic neoplasms and tumor-like conditions

1984 ◽  
Vol 42 ◽  
pp. 102-105
Author(s):  
Lawrence M. Roth
Keyword(s):  
Electron Microscopy ◽  
Reproductive Tract ◽  
Malignant Tumors ◽  
Frozen Section ◽  
Cost Effective ◽  
Female Reproductive Tract ◽  
Ultrastructural Examination ◽  
Specific Diagnosis ◽  
Potential Value ◽  
Gynecologic Neoplasms

The female reproductive tract may be the site of a wide variety of benign and malignant tumors, as well as non-neoplastic tumor-like conditions, most of which can be diagnosed by light microscopic examination including special stains and more recently immunoperoxidase techniques. Nevertheless there are situations where ultrastructural examination can contribute substantially to an accurate and specific diagnosis. It is my opinion that electron microscopy can be of greatest benefit and is most cost effective when applied in conjunction with other methodologies. Thus, I have developed an approach which has proved useful for me and may have benefit for others. In cases where it is deemed of potential value, glutaraldehyde-fixed material is obtained at the time of frozen section or otherwise at operation. Coordination with the gynecologic oncologist is required in the latter situation. This material is processed and blocked and is available if a future need arises.

The IBM-PC in electron microscopy

1996 ◽  
Vol 54 ◽  
pp. 612-613
Author(s):  
James F. Mancuso
Keyword(s):  
Head Start ◽  
Image Acquisition ◽  
Cost Effective ◽  
Financial Applications ◽  
Number Of Factors ◽  
Instrument Control ◽  
The Cost ◽  
Training And Support ◽  
Control Image ◽  
Ibm Pc

IBM PC compatible computers are widely used in microscopy for applications ranging from control to image acquisition and analysis. The choice of IBM-PC based systems over competing computer platforms can be based on technical merit alone or on a number of factors relating to economics, availability of peripherals, management dictum, or simple personal preference.IBM-PC got a strong “head start” by first dominating clerical, document processing and financial applications. The use of these computers spilled into the laboratory where the DOS based IBM-PC replaced mini-computers. Compared to minicomputer, the PC provided a more for cost-effective platform for applications in numerical analysis, engineering and design, instrument control, image acquisition and image processing. In addition, the sitewide use of a common PC platform could reduce the cost of training and support services relative to cases where many different computer platforms were used. This could be especially true for the microscopists who must use computers in both the laboratory and the office.

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