Select your language

Electronic cooling and/or heating design

Diseño electrónico de enfriamiento y/o calefacción

We present an alternative of cooling or heating by means of a small domestic model.

by Jimy Danelli*

As a lover of refrigeration and air conditioning with all the environmental considerations that our systems generate, such as greenhouse gases, on the one hand, and the carbon footprint left by the use of these electromechanical equipment; doing a few small exercises, a little scientific, it is possible to experiment with electronic components already used in the industry for the generation of cooling and / or heating, acquiring Some Peltier cells and elaborating a small domestic system.

There has been a lot of talk about air conditioning, with important elements of an electromechanical system such as the compressor, fan motors, pipes and coils, refrigerant gas, all with a high economic cost in addition to the effects of energy consumption and the effects of leaks of polluting gases in some cases, but this time we want to go a step further and make a small design already used in car cellars and in some designs to small scale.

- Publicidad -

We know that we have already been evaluating larger-scale alternatives of models of much more cooling and / or heating capacity, in this sense we want to give an example of the construction of a simple system of low energy consumption with few elements for its manufacture, here we present a Peltier cell to be used as an air conditioning system.

Peltier cell
This type of cell works by the Peltier effect, which is based on the fact that when a current is passed through two metals or semiconductors joined by two "Peltier joints", a heat transfer is created from one joint to the other, causing as a result that one cools and another is heated. It would be something like a low-cost mini heat pump, without compressor, refrigerant or other complicated elements, simply a union between two materials.

As a single junction does not produce hardly any power, Peltier cells consist of a multitude of junctions between two plates (usually 4×4 cm). Although you can not expect one of these plates to cool a barrel of beer much less.

This effect is used by some bottle racks that are used to maintain a moderate temperature inside and also some car refrigerators and similar systems.

Example of an air conditioning system
We are going to make a small model of what would be an air conditioner with this Peltier Cell the following basic components:
• Two PC microprocessor-type heatsinks with built-in fan
• A 12V and 8.5A power supply
• The TEC1-12706 peltier cell that can be purchased in a physical electronics store. Other materials: thermal paste, cables and some insulation.
The scheme of the assembly would be as follows:

- Publicidad -

It is simply a heatsink-Peltier-heatsink assembly. It is necessary that both sides of the Peltier cell make good contact with the surface of the heatsinks, so we will use thermal paste and tighten a lot (blessed flanges!).

In addition, as the heatsinks are somewhat larger than the cell, we have filled this area with insulating material, here you can use almost any type of material that is not thermal conductive.

Although the assembly could be greatly improved, we have managed to lower the temperature at which the air takes almost 1.5ºC (from 24.7ºC to 23.3ºC), while the one that heats it does about 3ºC (from 25ºC to 28ºC).

In a test that we have done by installing the cold side inside a container and leaving the hot side on the outside, we have managed to maintain the temperature of the container above 22ºC while outside we were about 25ºC.

Obviously to make an air conditioner for a room with this system you will need many cells, or a very large cell that is not marketed as such at the moment at the level of electronic stores. To get an idea, we have made an estimate of the cooling power generated by the "mini air conditioning" and is approximately 15W, while the electricity consumption exceeds 40W, so it is not a very efficient system, but following the evaluation and experimentation you can achieve with few things a system that has no polluting elements, it does not require pipes, compressors and other more complex elements.

- Publicidad -

Another peculiarity that this small demonstration would have is that we can put it to work in "heat pump" or heating simply by changing the polarity in the power supply, in this way it would heat the container and cool the outside air.

As an important point you should not connect the cell to the 12V, without making this assembly, that you know, that without dissipation of the heat generated, although one face cools with respect to the other, we will be able to put in less than 20 seconds the hot face at 150ºC and the "cold" one at 100ºC, and as a consequence the Peltier cell will burn.

With this small design we only want to present an alternative to some systems that, despite offering limited capacity, are being used and marketed, but that surely, in one way or another, are already being experimented and built larger and that provide a larger cooling and / or heating capacity.

* Jimy Danelli is an air conditioning and refrigeration maintenance consultant. You can write to the email: [email protected]

Duván Chaverra Agudelo
Duván Chaverra AgudeloEmail: [email protected]
Jefe Editorial de las revistas AVI Latinoamérica, ACR Latinoamérica, Ventas de Seguridad, Zona de Pinturas, Aftermarket Internation, Gerencia de Edificios, TV y Video, y Director Académico en Latin Press, Inc,.
Comunicador Social y Periodista con experiencia de más de 18 años en medios de comunicación. Apasionado por la tecnología y por esta industria.

No comments

• If you're already registered, please log in first. Your email will not be published.

Leave your comment

In reply to Some User
The HVAC/R sector will meet in Panama with ACR Latin America

The HVAC/R sector will meet in Panama with ACR Latin America

Panama. ACR Latin America invites the Panamanian community in the air conditioning and refrigeration sector to an integration night that will take place on April 24 at the Hotel Riu Plaza.

Refrimundo announces the ninth edition of the Refricon 2025 National Air Conditioning Congress

Refrimundo announces the ninth edition of the Refricon 2025 National Air Conditioning Congress

Costa Rica.  Refrimundo announced the ninth edition of the National Congress of the Day of the Technician: Refricon 2025, which will take place next Saturday, May 24, at the Convention Center of...

Smart ventilation allows cruisers to reduce their fuel consumption by up to 10%

Smart ventilation allows cruisers to reduce their fuel consumption by up to 10%

International. Demand-driven technology optimizes energy use in galleys and staterooms on cruise ships. A key improvement in HVAC systems could be setting the course for more efficient and...

Case study: Lagleyze Hospital reinforces the safety of its operating theatres with new air conditioning technology

Case study: Lagleyze Hospital reinforces the safety of its operating theatres with new air conditioning technology

Argentina. The Hospital Oftalmológico Pedro Lagleyze has just incorporated a new air conditioning system that will allow optimal conditions of temperature, humidity and air purity to be maintained...

MAHLE launches bionic radial blower inspired by the penguin: quieter, more efficient and compact

MAHLE launches bionic radial blower inspired by the penguin: quieter, more efficient and compact

International. MAHLE presented an innovation that promises to transform air conditioning systems in the automotive industry: a bionic radial blower that reduces noise by 60% and improves efficiency...

Marcelo Contreras assumes the presidency of the Chilean Chamber of Refrigeration and Air Conditioning

Marcelo Contreras assumes the presidency of the Chilean Chamber of Refrigeration and Air Conditioning

Chile. The Chilean Chamber of Refrigeration and Air Conditioning A.G. announced the appointment of Marcelo Contreras Barrera as its new president for the period 2025-2026.

Siemens appoints Miguel D'Alessio as new CEO in Colombia

Siemens appoints Miguel D'Alessio as new CEO in Colombia

Colombia. Focused on sustainability, industrial digitalization and energy storage, Siemens, a global technology company for the electrification, automation and digitalization of industries and...

Finalists of the CALA AWARDS will travel as guests to RefriAméricas Santo Domingo

Finalists of the CALA AWARDS will travel as guests to RefriAméricas Santo Domingo

Latin America. Applications for the prestigious CALA AWARDS 2025 will be open until May 10. This award, organized by ACR Latin America, is a unique opportunity to highlight the best air conditioning...

Copeland to Showcase Innovative Cold Chain Solutions at Global Cherry Summit 2025

Copeland to Showcase Innovative Cold Chain Solutions at Global Cherry Summit 2025

Chile. Copeland, a global provider of sustainable climate solutions, will participate in the Global Cherry Summit 2025, which will be held on April 22 at the Monticello Conference Center, in San...

Carrier Receives Double Recognition at the 2025 Environment + Energy Leader Awards

Carrier Receives Double Recognition at the 2025 Environment + Energy Leader Awards

United States. The company was awarded in the Energy Innovation and Software Implementation categories for its Abound solutions, which optimize energy consumption in more than 2,500 stores in the...

Free Subscription
Remember Me
SUBSCRIBE TO OUR NEWSLETTER
DO YOU NEED A SERVICE OR PRODUCT QUOTE?
LASTEST INTERVIEWS
SITE SPONSORS










LASTEST NEWSLETTER
Ultimo Info-Boletin