VIESSMANN - Building Materials and Architectural Building Products
Viessmann offers a comprehensive range for oil in three categories, including highly efficient low
temperature and condensing boilers from 13 to 20 000 kW in cast iron and steel, as both freestanding and wall
The Viessmann gas boiler range in three categories includes freestanding and wall mounted boilers as low
teperature and condensing versiond from 4 to 20 000 kW.
Viessmann is one of the leading European manufactures of solar thermal systems. Innovative flat-plate and tube
collectors for DHW heating and central heating backup are available.
Viessmann offers complete solutions for wood - from pellet boilers for supplying heat to detached houses as well
as to complex systems for the generation of power and heat from biomass, for example for residential complexes,
commercial operations or utility companies (output: 4 to 13 000 kW).
Utilising naturally occuring heat. The comprehensive heat pump range from Viessmann extends from compact units
for passive houses to cascaded solutions with several hundred kilowatt output. Brine, water and air can serve as
Most home extensions requiring planning permission will probably benefit from using their products during the
build. Many Architects or House Extension Designers can incorporate their products within the
scheme design drawings and specifications.
The following article may be of interest for homeowners researching this type of building product for inclusion
within their own house extension scheme.
Solar Thermal Vs Solar Photovoltaic Systems - Pros & Cons
By Jennifer Mo
So, you've heard good things about solar and are excited at the thought of using the sun to power your home.
What's next? If you're just starting think about solar, you may be surprised to discover that there are two
different possibilities for turning your house solar: solar thermal (usually matte black with prominent pipes) and
solar photovoltaic (usually blue and shiny).
A solar thermal system collects heat energy from the sun and generally uses it to heat either water or liquids
that will then transfer their heat to water or air. In largescale solar thermal plants, the heat can be used to
power steam turbines. In contrast, a solar photovoltaic system, also called a solar power system, collects sunlight
and converts it directly into electricity through a semi-conductor material like silicon. Both types can slash
electricity bills and pay for themselves well within their lifetimes. Let's take a look at each.
Pros of Solar Power Systems
- Solar photovoltaic technology produces clean, green electricity for 30+ years. Quality panels
professionally installed usually have warranties of at least 25 years.
- The electricity produced by the system can offset 60% or more of a household's energy needs, depending on
energy use and system size and orientation.
- Peak production coincides with peak energy needs in the summer. Solar panel systems can power demanding
appliances like refrigerators and air conditioning without stressing the grid.
- Solar panels can protect & extend the life of roofs or even be integrated directly into a building for
a more aesthetic appearance.
- Greater upfront investment & longer payoff (10+ years)
- Average efficiency for solar panels remains under 20%
- Expensive raw materials translate to higher equipment costs
- More roof space required
Pros of Solar Thermal Systems
- Up to 70% efficient in collecting heat energy from the sun; less roof space required.
- Reduces electricity and gas bills by using the sun to warm water and spaces.
- Lower initial investment and shorter payback period (3-5 years).
- Dependable, less complex technology already used extensively in Asia & Europe.
- Less effective in the winter
- Peak performance in summer coincides with least need for heating
- Less versatile than solar photovoltaic
Bottom Line: Either solar technology is better and less expensive than relying on fossil fuels
and pollutant energy sources. Both come with state and federal incentives to help with costs. Some houses even
combine thermal and photovoltaic for both heat and power!