Solar collectors are becoming increasingly popular in Poland - mainly thanks to falling prices over the past few years. Today collectors are no longer seen as synonymous with luxury, but as a sustainable alternative source of renewable energy. But is it worth it to spend on the installation ... ? When and to whom is it worth it? This raises the question many of us ...
In our climate zone collectors are used primarily for domestic hot water (DHW). One of the main reasons for this is that water does not need to be heated up to temperatures as high as the water used in central heating system. As far as the requirements for hot water, then lower the required temperature, the better solar fulfilling their role. For this reason, the most effective collectors can be used in underfloor heating (usually in this type of heating system temperature is about 30-40 degrees), and heated water in the pool (there is enough temperature around 20-30 degrees).
however, should think and decide what Collector choose?
Solar collectors are offered in two basic types - as a flat or a vacuum. Thermal insulation in flat collectors is mineral wool, while in the vacuum - the vacuum surrounding the absorber.
vacuum is much more effective than any other insulation material. Is eliminated by the air movement, convection in the solar collector that is carrying the heat of flowing air absorber provides a significant share of heat loss. Therefore, the vacuum manifolds Solar should be characterized by higher labor efficiency than flat plate collectors. But not always so.
Comparing solar hot water systems for the average single-family home (3-4 person family), give similar results, vacuum solar collectors of the area. about 3 m2 and an area of \u200b\u200bflat plate collectors. about 5 m2. Prices of both are quite similar (ie comparing the efficiency of obtaining kWh/m2 per year). Increasingly, the construction of solar heating systems, vacuum tube solar collectors are used. One important reason is the smaller size you want to devote their installation, which as it often turns on the roof plays an important role.
Final selection of solar collectors depends on the specific conditions in which they would work, such hot water systems and the destination.
Robercik72
http://mojwymarzonydomek.blogspot.com/
0 comments:
Post a Comment