Self-perspiration garment for extravehicular activity improves skin cooling effects without raising humidity

Fiber‐Based Thermoelectric Generators: Materials, Device Structures, Fabrication, Characterization, and Applications

“…[178] These applications of rigid TEGs encourage research into FTEGs because of the typical advantages of the latter. [180] Therefore, the FTECs and FTEGs combine their advantages to provide a potential solution for solving thermal and moisture comfort issues of present space suits. For example, when astronauts engage in extravehicular activity, they wear hermetical space suits in outer space conditions in which the temperature range is −233-121 °C.…”

“…The traditional method of thermal control in a space suit is liquid cooling and ventilation. The drawback of this garment is its bad air permeability, which is the result of the ventilation unit or airflow duct over the garment . Therefore, the FTECs and FTEGs combine their advantages to provide a potential solution for solving thermal and moisture comfort issues of present space suits.…”

Does the hair influence heat extraction from the head during head cooling under heat stress?

“…Body cooling by liquid perfused garments has shown to reduce heat strain and improve thermal comfort of workers in heat or while wearing encapsulated protective clothing 1 , 2 ) . For example, there have been studies on the combination of body parts which improve cooling effectiveness 3 , 4 ) , the improvement of skin cooling effects without humidity issues 5 ) , and the comparison of cooling patch vs. water cooling system 6 ) . According to many previous studies 3 , 4 , 7 ) , it seems to be clear that the more effective and efficient body parts for cooling to alleviate heat strain were body extremities such as the head, neck, hands or feet compared to the trunk parts.…”

Progress of hybrid nanocomposite materials for thermoelectric applications

“…187 Traditionally, thermal control in a space suit is maintained by liquid cooling and ventilation, which results in bad air permeability of the garments due to the installation of a ventilation unit over the garment. 188 Therefore, the combination of textile-based thermoelectric generators and coolers can modify current space suit issues such as thermal and moisture comfort of astronauts. When the outer space temperature is greater than the body temperature, TEGs will supply electrical power for supporting the operation of TE coolers.…”