Research of roofing with integrated function of heat exchanger
| Acronym: | RoofFoam |
|---|
| Project start: | 01.08.2018 |
|---|
| Project end: | 30.06.2021 |
|---|
| Programme: | APVV |
|---|
| Project number: | APVV-17-0580 |
|---|
| Institute position in the project: | Project lead partner |
|---|
| Project leader: | Jaroslav Jerz |
|---|
The aim of the project is to develop and thoroughly to investigate an ultra-light roofing system providing very efficient transfer of heat between the solar radiation incident on its surface and a liquid heat conducting medium flowing in the pipeline system directly integrated into the structure of foamed aluminum alloy from which the roofing is made. Preliminary experiments have shown that shortcomings of currently manufactured thermal collectors can be eliminated if very well thermally conductive self-supporting and ultra-light panels made of aluminium foam capable through liquid hot medium to transmit energy obtained from solar radiation into heat exchangers inside buildings are used for the construction of the roofing. The heat gained from the sunlight by their surface is very efficiently transferred through the structure of aluminium foam to the heat transfer liquid medium because the thin walled corrugated waveguide tube made of stainless steel is closely embedded in the structure of foamed plates after their manufacture. Appropriate design of roofing with integrated function of heat exchanger with aluminium foam covering enables the effective use not only on the southern roof with a suitable inclination to the direction of the incident sunlight. The heat can be during the day in summer mode effectively taken from such an ultra-light roofing system placed in large areas of sloping roofs of buildings and used not only for hot domestic water preparation, but also for the accumulation of heat in the seasonal heat storage tanks located in the base plate of the building, or below it. The same innovative roofing is able during summer nights to remove excess heat collected during days by interior ceiling cooling panels and using a liquid coolant transfer the heat through the roof and drain it to the surrounding of building.