Estimation of coefficient of performance of thermoelectric cooler using a 30 W single-stage type

Abstract In this study, a single stage thermoelectric cooler (TER, of size: 21 × 14.2 × 13.5 cm) with thermoelectric module (TEM, of type inbc1-127. 05 with size 40 × 40 × 4.0 mm) and applied electrical power of 30 W and current of 2.5 A, was adopted to estimate the coefficient of performance (COP) of thermoelectric refrigerator (TER). The TER uses a fan to cool the heat exchange region of the TEM. The temperature of the fruit/vegetable samples used in this study was taken before and after cooling for a specific period. The temperatures at both the hot and cold sides of the TEM were also taken at every specific cooling period. The experimented TER can cool vegetable/fruit from about 27 to 5°C within 3 h. The aim of this study is to determine the COP of TER to ascertain the possible applications. The temperature gradient at the heat exchange section of TEM was used to estimate the average theoretical COP to be 0.99, the heat extracted from the cooling chamber and the power supplied was used to estimate the average practical cooling COP to be 0.52; which is within 0.4–0.7 standard COP for a single stage type of TER.

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UNJUK KERJA COOL BOX BERBASIS THERMOELEKTRIK COOLER DENGAN SINGLE DAN MULTI-STAGE TERMOELEKTRIK

ROTOR ◽

10.19184/rotor.v12i2.15867 ◽

2020 ◽

Vol 12 (2) ◽

pp. 28

Author(s):

Munawir Munawir ◽

Mega Nur Sasongko ◽

Nurkholis Hamidi

Keyword(s):

Thermal Energy ◽

Room Temperature ◽

Thermoelectric Module ◽

Single Stage ◽

Thermoelectric Cooler ◽

Data Logger ◽

Type K ◽

Multi Stage ◽

Thermoelectric Cool ◽

X 24

Thermoelectric technology works by converting thermal energy into electricity directly or preferably. Thermoelectric technology works by converting thermal energy into electricity directly or preferably. Theuse of thermoelectric as a cooler in cool box systems has been extensively studied. The thermoelectric cool ability can be achieved depending on the design of a good system. Therefore, this study aims to determine the performance of thermoelectric cooler cool box based on single and multi stage. Tests carried out using cool boxes of dimensions of 31 cm x 19 cm x 24 cm witha thickness of 3 cm and with the TEC1 12706 module. The voltage used in each configuration is 12 Volts. Temperature data readings on laptops using DAQNavi_SDK data logger connected to type K thermocouples. The result showed the multi stage configuration reached a room temperature of around 19.3 oC and 21.8 oC for single stage. Meanwhile, the multi stage configuration COP value is 1.36 and with a single stage configuration is0.88. It can be concluded that the thermoelectric configuration has an influence on the performance of the cool box system. Keywords: Cool box, Thermoelectric module, Multi stage, single stage, COP

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Portable Thermoelectric Cooler Box Performance with Variation of Input Power and Cooling Load

Aceh International Journal of Science and Technology ◽

10.13170/aijst.7.2.8722 ◽

2018 ◽

Vol 7 (2) ◽

pp. 85-92

Author(s):

Afdhal Kurniawan Mainil ◽

Azridjal Aziz ◽

M Akmal

Keyword(s):

Electrical Power ◽

Thermoelectric Module ◽

Temperature Stability ◽

Input Power ◽

Peltier Effect ◽

Air Cooling ◽

Thermoelectric Cooler ◽

Cooling Load ◽

High Input ◽

High Input Power

The thermoelectric module is a device that works by using the Peltier effect when electrical power supplied on it. In this study, the thermoelectric module is applied as thermoelectric cooler (TEC) using air cooling heat sink where cooling box capacity is 22 L. This paper experimentally investigates the thermal performance of thermoelectric cooler with a variation on input power and cooling load. The investigation has been conducted by three variations on input power (50.5W, 72.72W and 113.64W) and by two variations of the cooling load using mineral water (1440 mL and 2880 mL) with input power 113.64W. The box temperature achieved at input power 50.5W, 72.72W and 113.64W are 19.98oC, 19.77oC and 18.52oC, respectively. While at the cooling load of 1440 mL and 2880 mL, the temperature achieved in the box are 22.45oC and 23.32oC, respectively. The test results showed that in variation on the input power from low to high, the temperature in box becomes lower on high input power and causes the lower of COP, this is because more energy could be absorbed on high input power. In the cooling load variation, the greater the cooling load given in cooling box, then the longer the box temperature stability can be achieved because of more energy needed for decreasing the temperature of cooling box.

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Simulation and experimental study on performance analysis of solar photovoltaic integrated thermoelectric cooler using MATLAB Simulink

Thermal Science ◽

10.2298/tsci201211301n ◽

2021 ◽

pp. 301-301

Author(s):

Lalith Nadimuthu ◽

Divya Selvaraj ◽

Kirubakaran Victor

Keyword(s):

Cooling System ◽

Thermoelectric Module ◽

Heat Removal ◽

Coefficient Of Performance ◽

Photovoltaic Module ◽

Air Cooling ◽

Thermoelectric Cooler ◽

Solar Photovoltaic ◽

Matlab Simulink ◽

Effective Heat

The present study investigates the performance of solar photovoltaic integrated thermoelectric cooler (TEC) using MATLAB Simulink. The enhancement of efficiency has been achieved using an effective heat removal mechanism from the hot side heat sink. Since the hot side temperature is a crucial parameter. The intrinsic material properties like Seebeck coefficient (?), Thermal Conductance (K) and Electrical resistance (R) of the thermoelectric module are carefully estimated using analytical method and reported. The MATLAB Simulink Peltier module is developed based on the estimated intrinsic properties. The effect of system Voltage (V) and Current (A) on the thermal parameters like cooling capacity (QC) and Coefficient of performance (COP) has been investigated. The simulation study is validated by conducting a series of experimental analysis. The experimental model is equipped with a 100 Wp polycrystalline solar photovoltaic module to integrate and power the 12V/5 A of the 60-Watt thermoelectric cooler. Moreover, the results reveal that there is a significant effect of ambient and hot side temperature on the thermoelectric cooler performance. The fin-type conductive mode of heat transfer mechanism is adopted along with the convective forced air-cooling system to achieve effective heat removal from the hot side. The infrared thermographic investigation is carried out for ascertaining effective heat removal.

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Dynamic grid fault analysis in wind power plant with DFIG by using supervisory control and data acquisition (SCADA) viewer

E3S Web of Conferences ◽

10.1051/e3sconf/202018103006 ◽

2020 ◽

Vol 181 ◽

pp. 03006

Author(s):

Nduwamungu Aphrodis ◽

Ntagwirumugara Etienne ◽

Utetiwabo Wellars ◽

Mulolani Francis

Keyword(s):

Power Systems ◽

Power Flow ◽

Control Strategies ◽

Electrical Power ◽

Fault Analysis ◽

Operational Mode ◽

Electrical Power Systems ◽

Fault Ride Through ◽

Before And After ◽

Clearing Time

Faults in electrical power systems are among the key factors and sources to network disturbances, however control strategies are among key faults clearing techniques for the sake of safe operational mode of the system.Some researchers have shown various limitations of control strategies such as slow dynamic response,inability to switch Off and On network remotely and fault clearing time. For a system with wind energy technologies, if the power flow of a wind turbine is interrupted by a fault, the intermediate-circuit voltage between the machine-side converter and line-side converter will fall in unacceptably high values.To overcome the aforementioned issues, this paper used a Matlab simulations and experiments in order to analyze and validate the results.The results showed that fault ride through (FRT) with SCADA Viewer software are more adaptable to the variations of voltage and wind speed in order to avoid loss of synchronism. Therefore at the speed of 12.5m/s a wind produced a rated power of 750W and remained in synchronization before and after a fault created and cleared but worked as generator meanwhile at speed of 3.4m/s wind disconnected from grid and started working as a motor and consumed active power (P=-25watts) and voltage dip at 100% .For the protection purpose, the DC chopper and crowbar should be integrated towards management of excess energy during faults cases.

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Experimental Study on the Water Selective Dense Membrane under an Absolute Pressure Difference with Simplified Test Method

Applied Sciences ◽

10.3390/app11041710 ◽

2021 ◽

Vol 11 (4) ◽

pp. 1710

Author(s):

Jinwook Lee ◽

Hyo-Sun Kim ◽

Donik Ku ◽

Jihun Lim ◽

Minkyu Jung ◽

...

Keyword(s):

Measurement Methods ◽

Test Method ◽

Coefficient Of Performance ◽

Absolute Pressure ◽

Air Conditioner ◽

Experimental Conditions ◽

Simple Method ◽

Performance Factors ◽

Dense Membrane ◽

Before And After

Membrane-based vacuum dehumidification technology is currently being actively studied. In most studies, the performance of the membrane-based systems is evaluated under the assumption that the membrane can achieve ideal separation, which results in ideal coefficient of performance (COP) values. However, the performance factors for membranes vary depending on the experimental conditions and measurement methods. Therefore, relevant values can only be calculated if the data are measured in an environment close to that of the application conditions. The cup measurement method is a simple method to measure the permeability, however, there are limitations regarding adding variables during the experiment. To overcome these limitations, a new experimental device was constructed that combines pressurized cell with the cup method. Using the device, the performance of polyethylene-amide-bonded dense membranes was evaluated under conditions where absolute pressure differentials occurred before and after the membrane, such as in air conditioner dehumidification systems.

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MODELING THE EFFECT OF HEAT EXCHANGE ON THE EFFICIENCY OF A THERMOELECTRIC COOLER

Fundamental and Applied Problems of Engineering and Technology ◽

10.33979/2073-7408-2020-340-2-132-135 ◽

2020 ◽

Vol 2 ◽

pp. 132-135

Author(s):

O.I. MARKOV

Keyword(s):

Numerical Calculation ◽

Heat Exchange ◽

Solid State ◽

Numerical Modelling ◽

Temperature Difference ◽

Maximum Temperature ◽

Thermoelectric Cooler ◽

Maximum Temperature Difference ◽

Peltier Cooler ◽

Account Heat

Numerical modelling thermal and thermoelectric processes in a branch of solid–state thermoelectric of Peltier cooler is performed, taking into account heat exchange by convection and radiation. The numerical calculation of the branch was carried out in the mode of the maximum temperature difference.

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

Building Services Engineering Research and Technology ◽

10.1177/0143624418814067 ◽

2018 ◽

Vol 40 (2) ◽

pp. 220-236 ◽

Cited By ~ 2

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.

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Hybrid photovoltaic and thermoelectric module for CPV-T with heat exchange applications

10.1063/1.5053553 ◽

2018 ◽

Author(s):

Ryo Tamaki ◽

Takeshi Toyoda ◽

Yoichi Tamura ◽

Akinari Matoba ◽

Toshiharu Minamikawa ◽

...

Keyword(s):

Heat Exchange ◽

Thermoelectric Module

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Three-Dimensional Analysis on the Performance of the Thermoelectric Micro-Cooler

Heat Transfer: Volume 3 ◽

10.1115/ht2005-72506 ◽

2005 ◽

Author(s):

Kong Hoon Lee ◽

Ook Joong Kim

Keyword(s):

Temperature Difference ◽

Three Dimensional ◽

Coefficient Of Performance ◽

Thermoelectric Cooler ◽

Small Temperature ◽

Small Current ◽

Thermoelectric Element ◽

Maximum Value ◽

Column Type ◽

P Type

Three-dimensional numerical analysis has been carried out using the FEMLAB software package to figure out the performance of the thermoelectric micro-cooler. A small-size and column-type thermoelectric cooler is considered and Bi2Te3 and Sb2Te3 are selected as the n- and p-type thermoelectric materials, respectively. The thickness of the thermoelectric element considered is 5 to 20 μm and the thickness affects the performance of the cooler. The effect of parameters such as the temperature difference, the current, and the thickness of the thermoelectric element on the performance of the cooler has also been investigated. The coefficient of performance (COP) is the primary factor to evaluate the performance of the cooler and the COP varies with the parameters. The COP has the maximum value at a certain current and the value decreases with the temperature difference or the thickness. The predicted results also show that the performance can be improved for thick thermoelectric element at the small temperature difference and small current.

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A New Design of an Integrated Solar Absorption Cooling System Driven by an Evacuated Tube Collector: A Case Study for Baghdad, Iraq

Applied Sciences ◽

10.3390/app10103622 ◽

2020 ◽

Vol 10 (10) ◽

pp. 3622 ◽

Cited By ~ 1

Author(s):

Adil Al-Falahi ◽

Falah Alobaid ◽

Bernd Epple

Keyword(s):

Thermal Performance ◽

Air Conditioning ◽

Cooling System ◽

Electrical Power ◽

Energy Performance ◽

Coefficient Of Performance ◽

Solar Absorption ◽

Air Conditioning System ◽

Solar Fraction ◽

Design Variables

The electrical power consumption of refrigeration equipment leads to a significant influence on the supply network, especially on the hottest days during the cooling season (and this is besides the conventional electricity problem in Iraq). The aim of this work is to investigate the energy performance of a solar-driven air-conditioning system utilizing absorption technology under climate in Baghdad, Iraq. The solar fraction and the thermal performance of the solar air-conditioning system were analyzed for various months in the cooling season. It was found that the system operating in August shows the best monthly average solar fraction (of 59.4%) and coefficient of performance (COP) (of 0.52) due to the high solar potential in this month. Moreover, the seasonal integrated collector efficiency was 54%, providing a seasonal solar fraction of 58%, and the COP of the absorption chiller was 0.44, which was in limit, as reported in the literature for similar systems. A detailed parametric analysis was carried out to evaluate the thermal performance of the system and analyses, and the effect of design variables on the solar fraction of the system during the cooling season.

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