scholarly journals Application of Heating Chamber on Peltier Effect Based Thermoelectric Refrigerator

2020 ◽  
Vol 9 (1) ◽  
pp. 2149-2153
Keyword(s):  
Control Systems ◽  
Coefficient Of Performance ◽  
Peltier Effect ◽  
Thermoelectric Cooler ◽  
Climate Control ◽  
Heating Chamber ◽  
Heating And Cooling

As we know Peltier Effect is the presence of heating and cooling at an electrified junction of two different conductors. Over the years we've realized that fridge and climate control systems are the most vitality devouring home apparatuses and because of this numerous analysts had concocted a lot of examines in this field. Therefore, to conquer these issues, we have thought of thermoelectric cooler with the help of various assemblies as a progression in this field. It has settled the issues of intensity utilization, cooling execution, vibrations and support. It has been ended up being one of the best headways in this situation, which has altered the previously mentioned issues. To make it progressively adjusted, we are reusing emanating warmth to change over it into a warming chamber to keep the things warm also. We are computing out its coefficient of performance and low electricity usage to demonstrate its effectiveness to be superior to different frameworks in the field.

scholarly journals Design and Optimization of High Performance Adsorption-Based Thermal Battery

2013 ◽  
Author(s):  
Shankar Narayanan ◽  
Xiansen Li ◽  
Sungwoo Yang ◽  
Ian McKay ◽  
Hyunho Kim ◽  
...  
Keyword(s):  
Control Systems ◽  
High Performance ◽  
Critical Parameters ◽  
Critical Element ◽  
Climate Control ◽  
Thermal Battery ◽  
Design And Optimization ◽  
Overall Design ◽  
Heating And Cooling ◽  
Performance Variation

Electric vehicle (EV) technology faces a substantial challenge in terms of driving range, especially when the vehicle’s climate control system relies entirely on the onboard electric battery. Therefore, we are developing an advanced adsorption-based thermal battery (ATB) capable of delivering both heating and cooling for electric vehicles with minimal use of the electric battery bank. While adsorption based climate control systems offer the advantage of direct usage of primary thermal energy sources for operation, they typically have low COP values, and are often bulky and heavy. A compact and lightweight ATB is necessary to replace existing climate control systems in EVs that use electric battery for operation. In this paper, we present a detailed computational analysis of adsorption kinetics taking place within an adsorption bed that is capable of delivering large cooling and heating capacities by making use of novel adsorbents. The overall design of the adsorption bed, which is a critical element in achieving a high performance thermal battery, is also discussed. To make performance predictions, we characterized the adsorbents to obtain their thermophysical and transport properties as well as adsorption characteristics. The model consequently incorporates these measured properties to predict the performance variation as a function of time. This work provides the critical parameters affecting heating and cooling rates, and identifies avenues for further improvement in the overall performance of the thermal battery.

scholarly journals Experimental Study to Analyze Feasibility of a Novel Panelized Ground-Source Thermoelectric System for Building Space Heating and Cooling

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 209
Author(s):  
Rui Miao ◽  
Xiaoou Hu ◽  
Yao Yu ◽  
Qifeng Zhang ◽  
Zhibin Lin ◽  
...  
Keyword(s):  
Thermoelectric Module ◽  
Electrical Energy ◽  
Building Envelope ◽  
Coefficient Of Performance ◽  
Conventional Heating ◽  
Peltier Effect ◽  
Space Heating ◽  
Heating And Cooling ◽  
Ground Source ◽  
Ground Loop

A thermoelectric module is a device that converts electrical energy into thermal energy through a mechanism known as the Peltier effect. A Peltier device has hot and cold sides/substrates, and heat can be pumped from the cold side to the hot side under a given voltage. By applying it in buildings and attaching it to building envelope components, such as walls, as a heating and cooling device, the heating and cooling requirements can be met by reversing the voltage applied on these two sides/substrates. In this paper, we describe a novel, panelized, ground source, radiant system design for space heating and cooling in buildings by utilizing the Peltier effect. The system is equipped with water pipes that are attached to one side of the panel and connected with a ground loop to exchange heat between the cold/hot sides of the thermoelectric module and the underground region. The ground loop is inserted in boreholes, similar to those used for a vertical closed-loop Ground Source Heat Pump (GSHP) system, which could be more than a hundred meters deep. Experiments were conducted to evaluate the feasibility of the developed panel system applied in buildings. The results show that: (1) the average cooling Coefficients Of Performance (COP) of the system are low (0.6 or less) even though the ground is used as a heat sink, and thus additional studies are needed to improve it in the future, such as to arrange the thermoelectric modules in cascade and/or develop a new thermoelectric material that has a large Seebeck coefficient; and (2) the developed system using the underground region as the heat source has the potential of meeting heating loads of a building while maintaining at a higher system coefficient of performance (up to ~3.0) for space heating, compared to conventional heating devices, such as furnaces or boilers, especially in a region with mild winters and relatively warm ground.

scholarly journals Cyclic Temperture Heating and Cooling Control System

2019 ◽  
Vol 9 (2) ◽  
pp. 2511-2514
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Peltier Effect ◽  
Thermal Testing ◽  
Climate Control ◽  
Thermo Electric ◽  
Heating And Cooling ◽  
Cooling Control ◽  
Cyclic Temperature ◽  
Temperature Heating

This paper on the cyclic temperature heating and cooling control system proposes a method to control and adjust to the suitable temperatures for the rooms. The system is utilised to control the temperature in various real-time environments. This where the paper on the cyclic temperature heating and cooling control system comes in by making the use of the peltier effect in the thermoelectric module, which is trying to solve the above problem. The temperature sensor detects the change in temperature as the difference between the set-point temperature which is used to execute the fan or the heater. The error in the system is reduced by the Proportional-IntegralDerivative (PID) controller which is around 80%-90%, which is often created by the Pulse Width Modulation (PWM) which generates square wave responsible for switching ‘ON’ and ‘OFF’ the thermoelectricmodule. These then switch between the MetalOxide Semiconductor Field Effect Transistor (MOSFETS) using the H-bridge circuit causing to change the flow of Direct Current (DC) current which in turn, is responsible for controlling the temperature of the surroundings. It can be used in precise temperature control and rapid thermal cycling in a micromachined DNA polymerase chain reaction chip.It also can be used in temperature control for PCR thermo-cyclers based on peltier effect thermo-electric. It can be used in an automotive cabin climate control system.Help in improving solar cooling technologies.Also, improve in the accuracy of the thermal testing of equipment.

scholarly journals Review of Intelligent Control Systems for Natural Ventilation as Passive Cooling Strategy for UK Buildings and Similar Climatic Conditions

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4388
Author(s):  
Esmail Mahmoudi Saber ◽  
Issa Chaer ◽  
Aaron Gillich ◽  
Bukola Grace Ekpeti
Keyword(s):  
Control Systems ◽  
Natural Ventilation ◽  
Energy Use ◽  
Integrated Control ◽  
Climatic Conditions ◽  
Effective Control ◽  
Practical Implementation ◽  
Optimal Output ◽  
Heating And Cooling ◽  
Building Cooling

Natural ventilation is gaining more attention from architects and engineers as an alternative way of cooling and ventilating indoor spaces. Based on building types, it could save between 13 and 40% of the building cooling energy use. However, this needs to be implemented and operated with a well-designed and integrated control system to avoid triggering discomfort for occupants. This paper seeks to review, discuss, and contribute to existing knowledge on the application of control systems and optimisation theories of naturally ventilated buildings to produce the best performance. The study finally presents an outstanding theoretical context and practical implementation for researchers seeking to explore the use of intelligent controls for optimal output in the pursuit to help solve intricate control problems in the building industry and suggests advanced control systems such as fuzzy logic control as an effective control strategy for an integrated control of ventilation, heating and cooling systems.

scholarly journals Thermoelectric Materials for Textile Applications

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3154
Author(s):  
Kony Chatterjee ◽  
Tushar K. Ghosh
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Seebeck Coefficient ◽  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
Inorganic Materials ◽  
Peltier Effect ◽  
Electronic Textiles ◽  
Heating And Cooling ◽  
Recent Attention

Since prehistoric times, textiles have served an important role–providing necessary protection and comfort. Recently, the rise of electronic textiles (e-textiles) as part of the larger efforts to develop smart textiles, has paved the way for enhancing textile functionalities including sensing, energy harvesting, and active heating and cooling. Recent attention has focused on the integration of thermoelectric (TE) functionalities into textiles—making fabrics capable of either converting body heating into electricity (Seebeck effect) or conversely using electricity to provide next-to-skin heating/cooling (Peltier effect). Various TE materials have been explored, classified broadly into (i) inorganic, (ii) organic, and (iii) hybrid organic-inorganic. TE figure-of-merit (ZT) is commonly used to correlate Seebeck coefficient, electrical and thermal conductivity. For textiles, it is important to think of appropriate materials not just in terms of ZT, but also whether they are flexible, conformable, and easily processable. Commercial TEs usually compromise rigid, sometimes toxic, inorganic materials such as bismuth and lead. For textiles, organic and hybrid TE materials are more appropriate. Carbon-based TE materials have been especially attractive since graphene and carbon nanotubes have excellent transport properties with easy modifications to create TE materials with high ZT and textile compatibility. This review focuses on flexible TE materials and their integration into textiles.

Modeling and Design of Building-Integrated Thermoelectrics

2011 ◽  
Author(s):  
Leon M. Headings ◽  
Gregory N. Washington
Keyword(s):  
Thermal Response ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Conventional Heating ◽  
Net Energy ◽  
Arbitrary Boundary ◽  
Heating And Cooling ◽  
Temperature Oscillations ◽  
Wall Structures ◽  
And Control

The goal of this research is to develop a framework for replacing conventional heating and cooling systems with distributed, continuously and electrically controlled, building-integrated thermoelectric (BITE) heat pumps. The coefficient of performance of thermoelectric heat pumps increases as the temperature difference across them decreases and as the amplitude of temperature oscillations decreases. As a result, this research examines how thermal insulation and mass elements can be integrated with thermoelectrics as part of active multi-layer structures in order to minimize net energy consumption. In order to develop BITE systems, an explicit finite volume model was developed to model the dynamic thermal response of active multi-layer wall structures subjected to arbitrary boundary conditions (interior and exterior temperatures and interior heat loads) and control algorithms. Using this numerical model, the effects of wall construction on net system performance were examined. These simulation results provide direction for the ongoing development of BITE systems.

Design and experimental analysis of a solar thermoelectric heating, ventilation, and air conditioning system as an integral element of a building envelope

2018 ◽  
Vol 40 (2) ◽  
pp. 220-236 ◽  
Author(s):  
Irfan Ahmad Gondal
Keyword(s):  
Experimental Analysis ◽  
Air Conditioning ◽  
Energy Use ◽  
New Technologies ◽  
Thermoelectric Module ◽  
Electrical Current ◽  
Building Envelope ◽  
Coefficient Of Performance ◽  
Heating And Cooling ◽  
Cooling Effects

This study presents an innovative concept of a compact integrated solar-thermoelectric module that can form part of the building envelope. The heating/cooling modes use the photovoltaic electrical current to power the heat pump. The experimental analysis was carried out and the results of coefficient of performance were in the range 0.5–1 and 2.6–5 for cooling and heating functions, respectively. The study demonstrates that thermoelectric cooler can effectively be used for heating, ventilation, and air conditioning applications by integrating with solar panels especially in cooling applications. The system is environmentally friendly and can contribute in the implementation of zero energy buildings concept. Practical application: In order to help address the challenge of climate change and associated environmental effects, there is continuous demand for new technologies and applications that can be readily integrated into day-to-day life as a means of reducing anthropogenic impact. Heating, ventilation, and air conditioning, as one of the largest energy consumers in buildings, is the focus of many researchers seeking to reduce building energy use and environmental impact. This article proposes using facades and windows that have an integrated modules of solar photovoltaic cells and thermoelectric devices that are able to work together to achieve heating and cooling effects as required by the building without requiring any external operational power.

The Influence of In-Vehicle Noise on Speech Recognition for Automotive Voice-Activated Control Systems

2002 ◽  
Vol 33 (9) ◽  
pp. 19-23
Author(s):  
By Dave G. Fish
Keyword(s):  
Speech Recognition ◽  
Control Systems ◽  
Convenient Method ◽  
Vehicle Control ◽  
Climate Control ◽  
High Demand ◽  
Vehicle Noise ◽  
Control Functions ◽  
Wide Range ◽  
Vehicle Systems

Voice activation provides a safe and convenient method of controlling vehicle systems such as in-car entertainment, telecommunications and climate control. In the fullness of time it is likely that there will be a high demand across all vehicle classes for such systems for a wide range of vehicle control functions. One of the challenges facing their development and introduction into vehicles is that of the in-vehicle noise environment.

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