Building Contractors Kildare & Dublin

Solar Panels

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Solar Panelssolar energy house

What ever the type of solar panels there is no better solution that provides virtually free energy when retrofitting your existing home power system. Solar energy is the origin of almost all forms of usable energy on earth with the exception of perhaps Nuclear Energy.  In Ireland solar energy can be used to create a free source of heat in almost all houses or buildings.  Solar water heating is the most cost effective way of using solar energy.  The most reliable and durable considering Ireland’s climate is the use of a vaccum tube and flat plate solar panels.  The use of solar panels is an excellent way to reduce your carbon footprint and add value to your home.

Solar Panels are also knows as ‘collectors’ which are fitted to the roof of a building.  The sun’s heat is used to warm water or another fluid which passes through the panel.  This fluid is fed to a heat store such as a hot-water tank which provides hot water or a source of hot water for central heating for the building.  The solar panels work through the day regardless of whether it is overcast without direct sunshine.

Solar Panels – Location

The best location for a solar panel is south facing with a tilted angle of 30 – 45 degrees horizontally.  The one rule of solar panels is that there should be no shadows on it during the hours in the middle of the day.  This shading can be from trees, adjacent buildings, chimneys or from the collectors themselves.

Choosing the Right Cylinder

It is important an appropriately sized cylinder should be chosen for the house.  The maximum cylinder temperature is directly related to the volume of your solar hot water cylinder.  It is recommended that at a maximum cylinder temperature of 60 degrees celcuis, 70 litres per square metre of aperture area is supplied and at a maximum cylinder temperature of 80 – 90 degrees celcius, 50 litres per square metre of aperture area is supplied. Our installer will help you choose the best sized cylinder for your building.

A solar water heater is comprised of ;

  • A pump which transfers heat from the collector to hot water in a storage tank
  • A solar collector which absorbs radiation and converts it into heat
  • The storage tank accumulates hot water which is produced by solar energy so that it can be stored for use when required
  • A back up heater such as oil, gas or a wood fuelled boiler, heat pump or immersion heater is used, which will bring the hot water to the temperature necessary when there is not enough sunlight to do so.  This occurs mainly in the winter months
  • In Ireland, Solar collectors alone cannot provide all the hot water for a household’s needs. Collectors are normally installed in conjunction with a conventional back-up heating system

Solar Panels & Planning Permission

The installation of solar panels in your home is exempt from planning permission up to 12 meters squared or 50% of the total roof area as per Statutory Instrument No. 83 of 2007 Planning and Development Regulations signed and implemented by Dick Roche, The Minister for the Environment, Heritage and Local Government on the 28th of February 2007.  It would be advisable to contact your local planning authority if you are unsure of the local planning requirements.

Available Solar Heat Conversion Systems

The vast resources of solar energy can be harnessed as they bombard the surface of Earth most efficiently by the green plants. Man has not been able to duplicate the process as yet. But the currently available technology offers us several avenues to entrap freely available solar

Some of these are;

  • Photovoltaic Solar panels (also called PV Panels or solar panels)
  • Solar Thermal Panels (low temperature)
  • Parabolic mirrors and Fresnel reflectors and lenses.
  • Solar cookers

Out of these the most user friendly and widely used domestic devices are the PV Panels and Solar Thermal Panels.

PV Panels or PV Modules

PV Solar Panels are semiconductor devices made basically of crystalline grade Silicon, gallium arsenide CdTe, amorphous silicon, CIGS etc The sunlight conversion rate varies from 5 -18%.
Uses can vary from domestic electricity supply to that of Space Stations.

Low Temperature Solar Panels (Solar Thermal Panels)

These are flat panels and are the most commonly used solar energy converter. These flat panels act as heat exchangers to transfer the thermal energy of the sun to water. This technology is used to heat swimming pools, domestic hot water etc.

Will these work on cloudy days and in the night?

The PV solar panels produce Direct Current electricity which can be stored in storage battery banks. When required as Alternating Current Power supply an inverter is used for the conversion. When not used with a storage batter bank the array of panels may be grid connected. When the panels produce surplus power this will be supplied to the grid and when solar power is in short supply grid power would supplement.

King Group CES is a Leading supplier of Solar Panels in Ireland

We provide the following supplies and services for your solar panel needs.

  • Calculation and sizing the solar panels, inverters and changeover devices for your domestic power demand.
  • Installing suitably and connecting to the existing domestic electricity supply circuits and the power grid.
  • Supply and install storage battery banks for those who demand these.
  • Obtaining the services of BER assessors and carry out retrofitting inline with the Advisory Report.
  • Free information on the HES scheme and Grants from the SEI.

Contacting us
For further information on home retrofitting with Solar Panels please contact us on callsave  045 840116 or complete our free online enquiry form…click here

Building Contractors Kildare & Dublin
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