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Microrrefrigerador termoeléctrico portátil


Oferta Tecnológica
Un centro de formación e investigación singapurense ha desarrollado microrrefrigeradores termoeléctricos que utilizan películas delgadas vanguardistas basadas en telururo de bismuto (Bi2Te3) para su incorporación en componentes y dispositivos electrónicos y optoelectrónicos. Estos dispositivos se incorporan en ropa deportiva para ofrecer prendas más cómodas en condiciones climatológicas extremas, mejorando el rendimiento y reduciendo los golpes de calor. El dispositivo no tiene partes móviles y requiere poco mantenimiento. El centro de investigación busca multinacionales y pymes de cualquier tamaño con el fin de establecer acuerdos de licencia o cooperación en materia de investigación.


Wearable thermoelectric micro-cooler
A Singapore educational and research institution has developed thermoelectric (TE) micro-coolers using state-of-the-art Bismuth Telluride (Bi2Te3) based thin films suitable for integration in electronic and optoelectronic components and devices. These devices are suitable for integration into existing sportswear to provide more comfortable garments for use in extreme environments.

The institution seeks licensing or research cooperation agreements with industrial MNEs or SMEs of all sizes.
To date, a wide variety of devices has been developed to create suitable environmental conditions to maintain human body temperatures. These devices include mechanical heating, air conditioning, and specialised clothing that circulates cooling fluids. These devices are often bulky, heavy, and can bring more discomfort to the person in performing his/her activity efficiently. More recently, thermoelectric (TE) devices incorporated into environmental suits to circulate cool air have been reported, but they provide lower cooling efficiency as they are designed to cool the entire suit and therefore consume more power. Thus, an efficient integrated wearable cooling system that involves localised cooling and lightweight materials is required.

A prototype has been fabricated to exhibit desirable TE properties and good electrical reliability. Freestanding TE micro-devices of any desired shape and dimensions can be fabricated using a relatively simple process protocol by sputter deposition and microfabrication processing methods, which enables large-area coating to be achieved with consistent results and at low processing temperatures. The TE modules are capable of converting electric energy into heat and vice versa directly.

These devices can be integrated with garments to provide greater comfort, especially in extreme weather conditions thereby improving outdoor performance and reducing heat stroke.

The unique features of the present invention are as follow:
- Free-standing TE cooler on a metal coated flexible substrate;
- Process protocol for sputtering fabrication process for a metal coated plastic wafer;
- Simple fabrication process using sputtering and shadow mask process;
- Large area coating process;
- Energy efficient operation of flexible TE cooler using designed power control circuit; and
- Integrated, energy efficient and flexible TE cooler on a wearable fabric.

The TE device does not consist of any moving parts, thus, little maintenance is required. The device which does not contain chlorofluorocarbons or materials that may require periodic replenishment can exceed 150,000 hours of steady state operation. The direction of heat-pumping in a TE system is fully reversible. Changing the polarity of the DC power supply causes heat to be pumped in the opposite direction where a cooler can then become a heater.

Precise temperature control to within 0.1 degree Celcius can be maintained and the device can function in severe and sensitive environmental conditions, or in applications where conventional refrigeration units cannot be used.

The institution seeks R-Y-D and licensing partnerships with industry players (SMEs of all sizes or MNEs) with an interest to use this technology for product development.
Advantages and Innovations:
The technology can be applied in the areas of:

- Microelectronic and Optoelectronic Devices (Spot coolers)
- Sports wear, uniforms
- Logistics
- Healthcare
- Aerospace and Defence
- Energy and Environment

Depending on their working modes, TE applications can be classified into three categories: coolers (or heaters); power generators; or thermal energy sensors. TE coolers are used in cases where the cooling system design criteria call for high reliability, small size, low weight, intrinsic safety and precise temperature control.

The key advantages of the present invention are as follow:

- Fabrication using either clean room or non-clean room facilities;
- Easy integration to outdoor garments/sportswear.
Thermoelectric solid state coolers are compact, efficient and they can fit the size of semiconductor chips easily
- Good reliability; and
- Environmental-friendly.
Stage of Development:
Under development/lab tested
Secret Know-how

Partner sought

Type and Role of Partner Sought:
The institution seeks to work with SMEs of all sizes or MNEs in a licensing or research cooperation agreement partnership.

The partner sought could be a technology provider or an industry player from the electronics, logistics, healthcare, aerospace/defence, energy/environment or textile/garment industry who is keen to explore the following types of partnerships:

i) Licensing agreement:
The partner can license the technology to further develop and commercialise it to offer to their customers.

ii) Research cooperation agreement:
The partner can undertake joint R


Type and Size of Client:
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
01002004 Embedded Systems and Real Time Systems
01002001 Micro and Nanotechnology related to Electronics and Microelectronics