Preliminary investigation of performance and temperature distribution of thermoelectric cooler box with and without internal fan (original) (raw)

Performance Analysis of a Low Price Thermoelectric Cooler: An Experimental Approach

In this communication, performance analysis of thermoelectric refrigerator is carried out. The thermoelectric refrigerator is developed in the laboratory and onsite experimental work has been done. The complete system cost is very low approximately 49.66 USD. The COP is varying from 0.17 to 0.26 at different cooling load condition and the lowest temperature can be achieved 2.3C to 10.5°C without load and full load within 28 minutes, respectively. The material research and cascading of the modules are required to increase the cooling effect as well as capacity of the refrigerator.

Optimization of operational conditions for a thermoelectric refrigerator and its performance analysis at optimum conditions

International Journal of Refrigeration, 2018

In this study, a portable mini thermoelectric refrigerator driven by a Peltier element is designed, constructed and tested. The Peltier element combined with fans on both sides is mounted onto a refrigerator box. An optimization for the operating conditions of the thermoelectric refrigerator is performed. The operating conditions of the system are the ambient temperature and voltages of the fans and Peltier element. Performance analysis for the optimum conditions obtained is presented. Results show that the optimum voltages of the Peltier element, inner and outer fans maximizing the cooling coefficient of performance of the system (COP) are 12V, 3V and 9V, respectively. The optimum ambient temperature is 293 K. Results also show that the cooling COP of the system decreases from 0.351 to 0.011 while the temperature of the cooled space changes from 293 K to 254.8 K. The proposed thermoelectric refrigerator is used to keep drinks, foods or medicines fresh and cool.

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

International Review of Applied Sciences and Engineering

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 t...

Effect of position and design parameters of a fan-cooled cold-side heat-sink of a Thermoelectric cooling-module on the performance of a hybrid refrigerator

Fourteenth International Conference of Fluid Dynamics 2-3 April 2021, Fairmont Nile City Hotel, Cairo, EGYPT, 2021

This paper presents analysis the thermal behavior of thermoelectric compartment in of the hybrid household refrigerator combines the thermoelectric and vapor-compression technologies. The hybrid refrigerator has three compartments, one of them driven by thermoelectric cooling system which made up of one Peltier module and heat sink with fan mounted on both sides. Performance analysis of thermoelectric refrigerator is performed and tested as a function to two installation positions of fan cold side of Peltier module, which is mounted at front wall of thermoelectric compartment. (i) The fan sucks of cooled air after is passed through finned heat sink of cold side of Peltier module then blew it through inside of thermoelectric compartment. (ii) The fan sucks the warm air from inside of the compartment and bush it through finned heat sink of cold side to cool it then distributes sidle into of the thermoelectric compartment. The results showed that second installation position of fan (ii) is more effective for heat transfer mechanism between the colder heat sink and the inside air of the thermoelectric compartment, and it insures a good distribution to colder air and temperatures compared with the first one (i). So, a few warm air regions were shown farther the fan near corners of the top part of the back wall. On the other hand, the shelf has a important role in distribution field of air and temperature inside of thermoelectric compartment. Finally, the validation showed a good agreement between the results experimental and CFD results.

Experimental study of thermoelectric refrigerator performances: effect of air flow direction on the ribbed platfin heat sink at cold side of TEC

IOP Publishing , 2020

This study aimed to investigate the effects of the direction and flow rate of air in the heat sink to the performance of the thermoelectric coolers (TEC). A ribbed heat sink is placed on the cold side of the TEC as a heat exchanger component in the Styrofoam cooler box, while a water block placed on the hot side of TEC, the temperature, and flow rate of coolant is maintained constant. Airflow on the heat sink in the cooling room has been varied by two different types of fan modes; blowing and sucking. Air velocity is also varied for both flow conditions. The investigation showed that the sucking mode of fan at the lowest speed of airflow would generate the lowest temperature of the cooler compared with the other combinations of fan modes and speed of airflows. Based on these results, showed that the fan mode and velocity of an airflow across the heat sink affect the thermoelectric performance.

Experimental and Parametric Analysis of a Thermoelectric Refrigerator

International Journal of Innovation and Sustainable Development, 2020

The adverse effects of refrigerants used in vapour compression refrigeration systems (VCRS) on the environment necessitated that alternative ways of cooling to be explored. Thermoelectric refrigeration systems can be used for cooling without the use of refrigerants. In this study, a cascade comprising of eight thermoelectric modules were used to reduce the temperature of a fourteen litre refrigeration chamber from 28.7°C to 3°C after 4 h. Parametric analysis was carried out to evaluate the performance of the refrigerator. At a temperature gradient of 20°C the coefficient of performance (C.O.P) was 0.55, while at a temperature gradient of 60°C the C.O.P was 0.25 at 6A. At the designed condition, a C.O.P of 0.34 was obtained. The result of the simulation shows that optimum performance of a thermoelectric refrigerator would be obtained when the temperature gradient between the hot and cold sides of the thermoelectric module is kept to a minimum.

The influence of the location of a thermoelectric cooler system on refrigeration cabins upon inside air temperatures and velocities

2015

The theory of thermoelectric cooling systems have already been studied for long time ago. The aim of this work is to investigate their use in household refrigerators that usually are based on vapor compression cycles. Being a small piece of equipment and for the typical thermal loads of refrigerators, it allows more useful space and can be placed anywhere inside. In this work, several simulations were carried out using the CFD software Fluent in order to investigate the better location of the cold plate upon the inside air temperatures and velocity profiles, either with natural convection (fan off) either with forced convection (fan on). After comparing the results obtained in several possible locations of the TEC in refrigeration cabins, it was found that the best place is at the center of the top surface with forced convection.

DESIGN AND DEVELOPMENT OF THERMOELECTRIC REFRIGERATOR

The global increasing demand for refrigeration in field of refrigeration air-conditioning, food preservation, vaccine storages, medical services, and cooling of electronic devices, led to production of more electricity and consequently more release of CO 2 all over the world which it is contributing factor of global warming on climate change. Thermoelectric refrigeration is new alternative because it can convert waste electricity into useful cooling, is expected to play an important role in meeting today•fs energy challenges. Therefore, thermoelectric refrigeration is greatly needed, particularly for developing countries where long life and low maintenance are needed. The objectives of this study is design and develop a working thermoelectric refrigerator interior cooling volume of 5L that utilizes the Peltier effect to refrigerate and maintain a selected temperature from 5 °C to 25 °C. The design requirements are to cool this volume to temperature within a time period of 6 hrs and provide retention of at least next half an hour. The design requirement, options available and the final design of Thermoelectric refrigerator for application are presented.

A Design of Thermoelectric Cooler and Optimization

Design, analysis and optimization of a thermoelectric refrigerator was carried out in this work the systems use thermoelectric "peltier" refrigerators (thermoelectric modules) to produce cooling or heating. The design calculation are find the performance curve of the thermoelectric module with the purpose of is find by simulation. Simulation results were compared with the practical data. The system simulation shows that exist a cheapest heat sink used for the thermoelectric refrigerator. the thermoelectric refrigerator with an air-cooled heat sink with thermal resistance 0.2515°C/W. Comparison was done between Bismuth telluride (Bi2Te3) and Antimony telluride(Sb2Te3) for the thermoelectric module. It was found that the bismuth telluride (Bi2Te3) due to its low thermal conductivity and high See back coefficient at room temperature has higher figure of merit (Z) and thus performed better as compared to Antimony telluride. The design be capable of be ready either on basis of the highest value of the cooling capacity, or on the basis of the most excellent heat sink technology existing.

Design of Thermoelectric Air Cooler: A Review

The impact of ongoing progress in Science and Technology has created variety of systems that can be used in producing of refrigeration effect with the use of thermoelectric module and photovoltaic module for generation of energy in which we further use for cooling and heating effect. The most important utilization of this portable air cooler is for to deliver cold air. A Thermoelectric module (Peltier Module) is used instead of refrigeration system (VCC or VAC cycle). The most important utilization of this air cooler is for to deliver cold air. A Thermoelectric module (TEM) is used as it is based on the principles of Peltier effect. The use ofPeltier effect is to create heating side and cooling side and also to maintain effectiveness. Thermoelectric Air cooler (TEAC) is a solid state heat pump in which uses the components that are available commercially. The thermoelectric refrigerator does not produce chlorofluorocarbon (CFC). It is pollutant free-contains no liquids or gases, portable, compact, creates no vibration or noise because of the difference in the mechanics of the system. It is a prototype and its semiconductor materials, by Peltier effect, to provide instantaneous cooling or heating. It has the advantage of having no moving parts and thus maintenance free.