Thermal energy is the biggest component of the energy consumed in the build environment.
As heat is mostly required during peak demand times, it also adds approximately 38% to the peak demand. Using electricity to heat is not efficient, therefore alternatives like solar power is not only the better choice, but contributes to the change for less polluting energy use.
At Holms and Friends we combine good understanding of the user requirements, proper design, demand side management, a controlled construction with training, monitoring and verification to achieve award winning solutions. Although the payback period might sometimes be slightly longer, the Life Cycle Cost and Levelized Cost of Electricity outperform other strategies by far.
Our projects include domestic, commercial and industrial systems. The largest South African unglazed system (pool heating) of 1.080m2 and the currently largest glazed flat collector system (700m2), are among those designed and constructed by Holms and Friends. Systems also include high pressure vacuum tube collectors.
The projects have different backup systems, depending on the circumstances. This could include: electrical resistance heating, heat pumps, gas burners, diesel boilers and wood burners for instance. The latest projects combine heat pumps.
Large sized projects:
Avoids 10.346 tons CO2. Onderstepoort residences: University of Pretoria. Saves 10.500.000kWh. South Africa
Project statistics: Team:
Constructed 2008 Design & Hardware: Holms and Friends
700m2 collector Construction: Eskol solar
40.000-litre storage Funding: University of Pretoria
Medium sized projects:
Groenkloof residences: University of Pretoria, South Africa
Project statistics:
- Constructed 2008
- 160m2 collector
- 000-litre storage
- Cost R 679.438
- Avoids 2.528 tons CO2
- Saves 2.880.000kWh
Team:
Design: Holms and Friends
Hardware: Holms and Friends
Construction: KBI engineering
Funding: University of Pretoria
Small sized projects:
Meerhof school for disabled, Hartbeespoort, South Africa
Project statistics:
- Constructed 2010
- 20m2 collector
- 500-litre storage
- Cost R 124.897
- Avoids 508 tons CO2
- Saves 504.000kWh
Team:
Design: Holms and Friends
Hardware: Holms and Friends
Construction: Eskol solar
Funding: Sponsored by Holms and Friends & SolTrain
Client: Meerhof school