EcoArkitekt

Posts Tagged ‘Hot Water’

In Portugal a thermal solar system can be scaled to satisfy some 60% a 75% das necessidades de água quente no período de um ano, and 100% needs in the summer period (3 a 4 months)*.

The variation between the North and South of the country is less than you might think, between the cities of Porto and Faro the difference is only 18%, what corresponds to € 25 per year *.

The basic cost of a solar thermal system for sanitary hot water heating for a single-family dwelling (2 people) is 1750€. *

With the energy savings for heating sanitary hot water provided by thermal solar system, You can have a return on money invested in 6 the 8 years *.

The electronic elements of the solar system consume less than about 15 € per year in electricity. The lifetime of a solar system with a regular maintenance of equipment may exceed the 20 years.

source: Energaia, 2007 (www.energaia.pt)

Mandating the installation of thermal solar collectors for sanitary hot water production in new buildings and in rehabilitations covered by RCCTE (Dec-Lei No. 80/2006).

This obligation applies whenever there is an adequate sun exposure

by adequate sun exposure means the existence of a coverage in terrace or a biased coverage with water whose normal is oriented in a range of 90° azimutes between Southeast and Southwest

the toppings that are not shaded by significant obstacles in the period commencing daily 2 hours after sunrise and ends 2 hours before sunset

What does it mean that there should be no obstructions with height exceeding about 20

obligation in 3V4 Gatherer by conventional occupant provided for (T0 and T1 – 2 pessoas, T2 – 3 people, Tn-n 1 people)

This area can be reduced to 50% the coverage area available, on the terrace or in the targeted areas in the Southern quadrant, between Southeast and Southwest

This area is mandatory is not possible to reduce the area on the grounds of quality collectors

the contribution of solar systems can only be counted for the purposes of regulation if the systems or equipment are certified according to the standards and legislation in force

This means, It is only permissible to resort to certified collectors, installed by certified installers and as long as there is evidence of maintenance contract during 6 years

collectors and certified installers can be found on the internet at www.aguaquentesolar.com

as an alternative to the use of collectors can be used other sources of renewable energy that capture, on an annual basis, energy equivalent to that of solar collectors, can these be used for sanitary hot water heating or other purposes

are excluded from alternatives other efficient technologies but non-renewable sources, as for example, heat stoves, heat pumps, thermodynamic solar heat pumps, Microgeneration, fireplaces, salamanders, etc.

the alternatives that are accepted are for example, geothermal energy, PV panels and wind energy