The highest efficiency flat plate collector on the market : WATT 4000SU for domestic solar hot water, solar assisted underfloor heating and solar heated swimming pools.
The high quality of products is guaranteed by the quality management system
The WATT collectors are also tested in the German "Institut Fur Solaregergieforschung" in Hameln (ISFH) according to the SOLAR KEYMARK principles. Only collectors marked with the Solar Keymark are approved for the European market.
The hollow chamber is made under vacuum conditions, which cause the fluid to vaporize at lower temperatures (30C or 86F) as a result of the low pressure. This technology allows the energy to be transferred indirectly to the hot water system.
Efficiency of model SCM:
Albion Ultrasteel is the new unvented hot water storage system. It has been designed specifically with solar applications in mind. Featuring a purpose-designed solar coil, which allows maximum heat transfer of solar energy into the stored water, the cylinders are suitable for use with a wide range of solar systems now available in Ireland and are an efficient and environmentally friendly way of providing Domestic Hot Water. Ultrasteel solar cylinders also offer the benefit of mains pressure hot water – powerful showers and fast filling baths.
ECO Solar Copper Cylinders |
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The Coppercraft range also includes Eco Solar twin coil and triple coil cylinders, which are designed for use with renewable energy sources, such as Shentai vacuum tube collectors and WATT 4000SU flat plate panels.
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Coppercraft Copper Cylinders are specially designed for use in open vented hot water systems. They are designed to heat up quickly and to retain heat for long periods.
Other Solar System Components |
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Thermal Mixing Valve (Anti-Scald Valve) Best practice calls for the fitting of a thermal mixing (anti-scald) valve. This applies to all hot water systems and not just solar heated water systems. With the current recommendation to store hot water at 60ºC to prevent the growth of legionella bacteria it is becoming more of a consideration to install thermal mixing valves. A thermal mixing valve mixes cold and hot water together to ensure the water temperature is safe for people to use. Controller
After commissioning, a permanent power supply should be provided for the solar controller to ensure circulation in the solar loop. The temperature controller constantly monitors the temperature difference between the solar collector manifold and the solar cylinder. This information is obtained from two temperature sensors: sensor 1 located inside the collector manifold and sensor 2 located in the middle of the hot water cylinder. Sensor 3 is located in upper part of the solar cylinder and is used to monitor the hot water supply temperature. Delta Sol BS3: the Resol controller provides a clear operating concept and is equipped with the newly developed illuminated combined display with system monitoring. Flashing symbols for sensors, pumps and valves enable an immediate allocation of temperatures, temperature differences and active actuators. Delta Sol BS Plus: this controller is pre-programmed for different hydraulic basic systems and equipped with pump speed control and heat quantity measurement. The controller additionally has a time controlled thermostat function and is equipped with the Resol Vbus for data communication. This Vbus permits two-way communication between modules, PCs or dataloggers. PC using the Resol Service Center Software can easily configure the controller. Temperatures in certain time slots can be adjusted independently using the integrated thermostat function and real time clock. Delta Sol ES: the number of sensors inputs and relay outputs (10/6) bridges the gap between the versions Delta Sol BS and Delta Sol M. The sophisticated and shapely design as well as the proven user-friendly operation of this product series are continued and also upgraded by further adjustable parameters. The controller is pre-programmed for 36 solar and heating systems, the individual configuration can be selected via the menu and represented graphically via the system-monitoring display. For data communication and remote maintenance, the controller is equipped with Resol Vbus, which permits two-way communication between modules, PCs or dataloggers. Delta Sol E: a multitude of adjustable functions and options are possible using 7 relay outputs and 10 sensors inputs for Pt1000, CS10 and V40. Due to its intelligent and easy-to-understand system configuration and its integrated calorimeter, the controller also offers the control of complex systems with up to 4 weather-compensated heating circuits. For data communication and remote maintenance, the controller is equipped with the Resol Vbus, which permits two-way communication between modules, PC's or dataloggers. Delta Sol M: this controller is equipped with a multi-lingual menu, 9 relay outputs and 12 sensor inputs as well as a multitude of add-on functions and options, which enable the adoption of the controller to individual solar and heating-systems. The controller is equipped with an interface for communication with the Resol Service Center Software. Delta Sol Pool: this is a new controller for heating a swimming pool by means of solar collectors and optimised operation of the filter system. Back up heating of the swimming pool is varied according to solar power and pool demand, thus saving expensive energy. Furthermore, the controller is equipped with a function control, which shows whether the system runs faultlessly or if there is an error. The controller has many additional pool functions such as: additional filter runtime, maximum limitation of flow temperature and a flushing function. Pump Station When activated by the controller the pump circulates the heat transfer fluid around the system. The lowest pump setting will normally achieve the optimum rate of circulation for efficient heat transfer. The pump can be isolated from the system by closing the valves on either side. In common with all domestic circulators this unit will be hot when operating. Expansion Vessel An adequately sized expansion vessel is essential to protect sealed system during stagnation conditions when extremely high temperatures can be generated in the collector circuit. All our expansion vessels are suitable for use in Glycol filled systems. In the event of a power cut, the water in the manifold of the solar collector will be turned to steam and this will push more water into expansion vessel and raise the pressure in the system, sometimes to a figure close to 3 bar. To make life easier for the installer we stock an expansion vessel mounting bracket with quick release coupling – no need to drain the system down in order to service the expansion vessel. Heat Transfer Fluid The anti-freeze liquid provides protection from extreme temperatures to -10ºC. Tyfocor LS is ready to use, vaporization-safe heat transfer fluid on the basis of propylene-glycol and developed for use as heating media in solar heating systems which are capable of a high thermal stress (e.g. in vacuum tube collector system). Tyfocor LS can only compensate the loss in liquids. Flexible Pipe Pre-insulated flexible pipe is the way to reduce installation time whilst ensuring a leak free installation and with the added advantage of enabling pipes to be run without the need to use heat in confined spaces. Both flow and return pipes are encased in HT Armaflex insulation. Flow and return pipes are in two separate pieces of insulation with a protective outer cover and glued together. The tubes can be easily separated to connect straight into the solar collector or pump station etc. |
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Solar Water Heating for Dairy Farms |
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Solar Water Heating (Thermo Siphon) for Dairy Farms
Hot water is necessary for the cleaning of milking machines and pipelines, receivers and bulk milk storage tanks. Hot water must be available in adequate quantities and at the required temperatures for each cycle in the cleaning process.
Hot water requirements vary from farm to farm and are dependant on the number of cows, number of milking units, pipeline sizes and lengths, and system layout (receivers, plate coolers etc.). Generally, a minimum hot water requirement is about 15 litres of 70ºC water per milking unit for each rinse/wash/rinse cycle. Water temperatures required for various milking equipment rinsing, washing, and sanitising cycles are as follows:
Electric Water Heating is Expensive
On dairy farms, hot water is often produced using electricity. This is convenient but very expensive. Electricity can cost up to €0.1640 per unit (kWh) (plus VAT @ 13.5%) for an ESB customer on the rural 24hr tariff. Solar – Free Energy from the SunSolar heating can save the farmer money. Solar energy is free and can make a substantial contribution to water heating in the summer months when hot water usage is at its peak. It can be supplemented by electricity when sunshine levels are not sufficient to heat all of the water needed. It is good for the environment too!Solar heating reduces emissions of CO2. Solar heating is environmentally friendly because it replaces the use of fossil fuels such as oil, coal and gas, which are used to generate electricity.
How doest it work? The solar energy collector must be mounted so that it faces south. The collector is fitted with specially designed vacuum tubes. These allow sunlight in but do not allow heat out. The tubes contain water, which is heated by the solar energy. This water rises as it is heated and gradually fills the tank with hot water. The tank temperature can rise as high as 90ºC on sunny days. The tank contains a copper heat exchanger coil. One end of the coil is connected to the cold water supply and the hot water outlet at the other end. The water is heated as it passes through the heat exchanger coil. This water is used for washing and sterilising the milking equipment. The water contained in the solar tubes and tank is never mixed with the hot water produced by the system. This means that hot water used for cleaning is never stored and there is no risk of legionella growth or other contamination, which may be a problem with other types of water heater. This is a big advantage, which ensures the highest level of hygiene.
Electric Immersion Heater for when the Sun does not shine
Installation Requirements
The water heater is supplied complete with a mounting frame, which is mounted on a flat surface like a concrete base, flat roof or a bracket. The solar water heater is rigidly mounted so that it can withstand strong winds to which it may be exposed. If it is mounted on a supporting structure such as a roof frame, the strength of the supporting structure should be carefully checked to ensure that it can support the weight of the solar water heater and the water which it contains. Remember that 1 litre of water weighs 1kg. The total weight of the solar water heater, when it is full of water is approximately 400kg. Solar Water Heating System installed on roof of Dairy farm near Castlemahon, Co. Limerick, Ireland
The water heater is well insulated and is protected from freezing in winter by its vacuum tubes and electric heater. It is important to ensure that the pipes connected to the water heater are insulated and protected from frost. All pipes should be fitted with trace heating tape. Features:
Technical Specifications:
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A good hot water supply improves milk quality!
Failure to have adequate supplies of hot water at suitable temperatures can lead to rapid increases in bacterial contamination and subsequent reduction in milk quality. Milk quality reductions can lead to a loss of quality premiums or, in the worst case, a refusal to accept the contaminated milk at the processing plant.
The principle of operation is simple. The solar collector is supplied complete with a mounting frame as shown in the picture below. The frame must be mounted so that it is firmly secured to a flat surface. The mounting must be secure enough to support the weight of the unit and resist the force of the wind.
A supply of clean water at a reasonable pressure must be available. A minimum pressure of at least 1 bar (10m head) is recommended. In order for the water heater to work well, it should be supplied from a pumped or mains cold water supply.
