Thursday, September 25, 2008
Tuesday, December 11, 2007
Tuesday, January 16, 2007
Our Alpha Basis Control System
Heating Solutions uses the mohlenhoff products for UFH controls as they are they are the worldwide market leader in this area.
The Alpha System The Alpha System products can be used either individually or in combinations and therefore offer solutions for many applications. Products and system solutions in the field of heating and air conditioning technology for highly efficient, state-of-the-art solutions. Möhlenhoff products are easy to install and to operate, of elegant design and reliable.The combination of Alpha Thermostats, Alpha control centres and Alpha Actuators forms the perfect control system for concealed heating/cooling systems.
The Alpha System The Alpha System products can be used either individually or in combinations and therefore offer solutions for many applications. Products and system solutions in the field of heating and air conditioning technology for highly efficient, state-of-the-art solutions. Möhlenhoff products are easy to install and to operate, of elegant design and reliable.The combination of Alpha Thermostats, Alpha control centres and Alpha Actuators forms the perfect control system for concealed heating/cooling systems.
The Alpha Actuator product family offers the perfect solution for almost any application. The unique valve/adapter concept guarantees a precise match of the Alpha Actuators to most valve bottoms and heating circuit distributors available on the market. The Alpha Actuator is available in thermoelectric and thermoelectronic versions (24 V, 230 V and 0-10 V). It is basically an actuator for opening and closing of valves. Actuator control is by a room thermostat with two-point output or pulse-width modulation.Its a perfect match to most valves and heating circuit distributors due to valve adapter concept. The Alpha Actuator AA 4001 (24 V) therefore has universal uses and is compatible with the most varied systems available on the market.
The Alpha basis allows quick and flawless connections between room thermostats (Alpha Thermostats) and actuators (Alpha Actuators). Installation is directly at the rear wall or on the mounting bracket in a heating circuit distribution cabinet. The Alpha Basis is used in the installation of floor heating systems in new constructions of privately owned residences, office buildings, multipurpose halls, and also for modernising and refitting older buildings.Operation indicator, Unmistakable and safe, Indicator light, Extension modules, etc
The Alpha thermostat
The basic concept of the Alpha Thermostat is manifested here.Excellent and precise control response due to pulse width modulation. Set value control element with "soft clicks" for precise adjustments of the desired temperature in1/4 degree steps. Large,well-readablesetting scale. Limitation of set temperature range. Suitable for "automatic" temperature reduction.The Alpha Thermostat represents a completely new concept in the field of electronic room temperature thermostats. From now on there is no need to be satisfied with less.Control technolgy and control comfort have been developed for daily practice and with a forward look.
Thursday, January 11, 2007
Pettinarolli UFH Systems
Manufacture
We supply single-piece extruded brass manifolds manufactured in Italy. The process is carefully quality controlled and includes:
- Drilling
- Tapping
- Tempering by heat to remove stresses from the bar
- Pressure testing the assembled components
- Stamping each manifold with a unique identification number to ensure traceability
Features
The assembled manifold includes: automatic air eliminators
The assembled manifold includes: automatic air eliminators
- pressure gauge
- temperature gauge
- isolating valves
- flow rate meters
Configurations
The manifold is available in many configurations and can be tailored to match any requirement – here are two examples.
The manifold is available in many configurations and can be tailored to match any requirement – here are two examples.
Description
1" single piece extruded brass manifold set comprising:
1" single piece extruded brass manifold set comprising:
1 x flow manifold complete with
- variable valves
- automatic air eliminator
- drain/fill point
1 x return manifold complete with
- pressure gauge
- temperature gauge
- valves to receive thermal actuator heads
Factory assembled, pressure tested and stamped in line with quality procedures.
Specification (per manifold):
| No. | Code | Description |
| 1 | MSFN1 | factory assembled manifold c/w top mounting flow meters |
| 1 | AEDP1 | automatic air eliminator c/w drain/fill point |
| 1 | PTDP63 | 63mm back entry pressure/temperature gauge c/w drain/fill point. |
Sizes (mm)
| Manifold Size | X Width | Y Height | Z Depth |
| 2 Way | 210 | 400 | 80 |
| 3 Way | 260 | 400 | 80 |
| 4 Way | 310 | 400 | 80 |
| 5 Way | 360 | 400 | 80 |
| 6 Way | 410 | 400 | 80 |
| 7 Way | 460 | 400 | 80 |
| 8 Way | 510 | 400 | 80 |
| 9 Way | 560 | 400 | 80 |
| 10 Way | 610 | 400 | 80 |
| 11 Way | 670 | 400 | 80 |
Allowances
An extra allowance must be made for the type of fittings to be added on, depending on the water mixing system:
Manual (Standard mixing system):
- Add 175mm to ‘X’
- Add 40mm to ‘Y’
- Add 80mm to ‘Z’
- Boiler pipework comes from bottom
Weather compensation (isolation valves only:
- Add 100mm to ‘X’
- No addition to ‘Y’
- No addition to ‘Z’
- Boiler pipework comes from side.
All manifolds should ideally be mounted at least 400mm above Finished Floor Level (FFL)
Tuesday, November 28, 2006
Solar Vacuum Glass Tubes
Solar Vacuum Glass Tubes (SVGT) absorb solar energy, converting it into heat for use in water and air heating
SGVT are also referred to as evacuated tubes, as the space between the two glass layers is evacuated to form a vacuum.
SGVT have already been used for years in Germany, Canada, China and the UK.
There are several types of solar tubes in use in the solar industry.
The Solarwyse's SK-TF uses the most common "twin-glass tube" also known as the "Sydney Tube".
This type of tube is chosen for its reliability, performance and low manufacturing cost.
Each solar tube consists of two glass tubes made from extremely strong borosilicate ("Pyrex") glass.
The outer tube is transparent allowing light rays to pass through with minimal reflection.
The inner tube is coated with two separate layers of special selective coating (Al-N/Al) which features excellent solar radiation absorption and minimal reflection properties.
The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposing the tube to high temperatures. This "evacuation" of the gasses forms a vacuum, which is an important factor in the performance of the solar tubes.
Why a vacuum? As you would know if you have used a glass lined thermos flask, a vacuum is an excellent insulator. This is important because once the solar tube absorbs the radiation from the sun and converts it to heat, we don't won't to lose it!! The vacuum helps to achieve this. The insulation properties are so good that while the inside of the tube may be 150oC / 304oF , the outer tube is cold to touch. This means that solar tube water heaters can perform well even in cold weather when flat plate collectors perform poorly due to heat loss (during high Delta-T conditions).
In order to maintain the vacuum between the two glass layers, a barium getter is used (the same as in television tubes). During manufacture of the solar tube this getter is exposed to high temperatures which causes the bottom of the evacuated tube to be coated with a pure layer of barium. This barium layer actively absorbs any CO, CO2 , N2, O 2, H2O and H2 out-gassed from the solar tube during storage and operation, thus helping to maintaining the vacuum. The barium layer also provides a clear visual indicator of the vacuum status. The silver coloured barium layer will turn white if the vacuum is ever lost. This makes it easy to determine whether or not a tube is in good condition.
The Getter is located at the bottom of the evacuated tube.
Solar tubes are aligned in parallel, the angle of mounting depends upon the latitude of your location. In a North South orientation the tubes can passively track heat from the sun all day. In an East West orientation they can track the sun all year round.
The efficiency of a solar water heater depends on a number of factors, inter-alia, the level of solar radiation (insolation) in your region.
Heating Solutions Ireland Ltd
Solar Panels – Underfloor Heating – Heat Pumps
29 Suil na Habhann, Mill Rd, Limerick, Ireland
Tel: 086 3823062; Fax: 061 346011
Email: info@heating-solutions-ireland.com
http://www.heating-solutions-ireland.com/
SGVT are also referred to as evacuated tubes, as the space between the two glass layers is evacuated to form a vacuum.
SGVT have already been used for years in Germany, Canada, China and the UK.
There are several types of solar tubes in use in the solar industry.
The Solarwyse's SK-TF uses the most common "twin-glass tube" also known as the "Sydney Tube".
This type of tube is chosen for its reliability, performance and low manufacturing cost.
Each solar tube consists of two glass tubes made from extremely strong borosilicate ("Pyrex") glass.
The outer tube is transparent allowing light rays to pass through with minimal reflection.
The inner tube is coated with two separate layers of special selective coating (Al-N/Al) which features excellent solar radiation absorption and minimal reflection properties.
The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposing the tube to high temperatures. This "evacuation" of the gasses forms a vacuum, which is an important factor in the performance of the solar tubes.
Why a vacuum? As you would know if you have used a glass lined thermos flask, a vacuum is an excellent insulator. This is important because once the solar tube absorbs the radiation from the sun and converts it to heat, we don't won't to lose it!! The vacuum helps to achieve this. The insulation properties are so good that while the inside of the tube may be 150oC / 304oF , the outer tube is cold to touch. This means that solar tube water heaters can perform well even in cold weather when flat plate collectors perform poorly due to heat loss (during high Delta-T conditions).
In order to maintain the vacuum between the two glass layers, a barium getter is used (the same as in television tubes). During manufacture of the solar tube this getter is exposed to high temperatures which causes the bottom of the evacuated tube to be coated with a pure layer of barium. This barium layer actively absorbs any CO, CO2 , N2, O 2, H2O and H2 out-gassed from the solar tube during storage and operation, thus helping to maintaining the vacuum. The barium layer also provides a clear visual indicator of the vacuum status. The silver coloured barium layer will turn white if the vacuum is ever lost. This makes it easy to determine whether or not a tube is in good condition.
The Getter is located at the bottom of the evacuated tube.
Solar tubes are aligned in parallel, the angle of mounting depends upon the latitude of your location. In a North South orientation the tubes can passively track heat from the sun all day. In an East West orientation they can track the sun all year round.
The efficiency of a solar water heater depends on a number of factors, inter-alia, the level of solar radiation (insolation) in your region.
Heating Solutions Ireland Ltd
Solar Panels – Underfloor Heating – Heat Pumps
29 Suil na Habhann, Mill Rd, Limerick, Ireland
Tel: 086 3823062; Fax: 061 346011
Email: info@heating-solutions-ireland.com
http://www.heating-solutions-ireland.com/
Saturday, November 11, 2006
Solar Panels Explained By SEI (Sustainable Energy Ireland)
Solar Panels, also known as "collectors", can be fitted to a building’s roof. They use the sun’s heat to warm water, or another fluid, which passes through the panel. The fluid is then fed to a heat store (e.g. a hot water tank) and helps provide hot water or a source of hot water for the building’s central heating system.
Solar panels work throughout daylight hours, even if the sky is overcast and there is no direct sunshine, which means they can make a useful contribution even during the winter by pre-heating the water in the storage tank. Your boiler or heat pump will boost the water temperature.
The cost of a professionally installed solar system can vary greatly. If you are considering investing in this technology you should do sufficient research to ensure that you are getting the best system for your needs and value for your money.
A solar water heater is composed of:
A solar collector which absorbs solar radiation (sunlight) and changes it into heat;
A pump which transfers the heat from the collector to hot water in a storage tank;
The storage tank accumulates the hot water produced by solar energy so that it can be stored for use when needed;
A number of accessories which ensure the regulation and the safety of the system;
A back-up heater (gas, oil, or wood fuelled boiler, immersion heater or heat pump) which will bring the hot water to the temperature required when there is not enough sunlight to do so (mostly in winter).
Flat Plate and Evaporated Tubes:
There are two main forms of solar panels on the marker, Flat Plate collectors and Evaporated Tube collectors. The main component of each is the absorber, which absorbs solar radiation and converts it into heat. In a plate collector, the absorber is in the form of a flat, black plate in a shallow metal container covered with one or more layers of transparent glass or plastic; either air or a liquid is circulated through the cavity of the container. Heat is directly transferred from the absorber to the circulating liquid (air, water)
The absorber in an Evacuated tube collector consists of a relatively narrow strip of copper with a selective black coating bonded to a single copper tube. The tube contains a special fluid which evaporates when heated. This vapour rises and transfers heat to the water circulating in the systems primary circuit.
Evaporated tubes are more efficient than flat plate collectors; consequently they take up less space. They are, however, more expensive that flat plate. Generally speaking, to produce a given amount of hot water, whether using flat plate or evaporated tubes, the installation costs will be roughly the same.
Solar Heating (water)
In Ireland, solar collectors alone cannot provide all the hot water for a household’s needs throughout the year. Correctly sized they will supply 60% of heat / domestic hot water needs. They are normally installed in conjunction with a conventional back-up heating system.
Solar Heating (space)
In a solar central heating system, the heat generated by the solar panels is used to warm up water stored in a large tank. The heated water is circulated into radiators or underfloor heating to distribute warmth around the house, and is also used to produce hot water for bathing, showers, etc. A control system ensures the regulation and safety of the whole equipment. A solar space heating system is generally designed to cover between 30% and 40% of the annual space and water heating requirement; this can reduce fuel bills by a similar amount.
Solar Air Heating
For comfortable and healthy living, homes require heating and ventilation. Solar air heating systems use air instead of water to circulate the heat collected by roof mounted solar panels in order to provide space heating and ventilation simultaneously. They are particularly effective in well insulated houses which are built airtight and, when used in combination with a heat recovery ventilation unit can reduce heating bills considerably. They can also be used to produce hot water through an air-to-water heat exchanger.
Source : SEI Ireland
Solar panels work throughout daylight hours, even if the sky is overcast and there is no direct sunshine, which means they can make a useful contribution even during the winter by pre-heating the water in the storage tank. Your boiler or heat pump will boost the water temperature.
The cost of a professionally installed solar system can vary greatly. If you are considering investing in this technology you should do sufficient research to ensure that you are getting the best system for your needs and value for your money.
A solar water heater is composed of:
A solar collector which absorbs solar radiation (sunlight) and changes it into heat;
A pump which transfers the heat from the collector to hot water in a storage tank;
The storage tank accumulates the hot water produced by solar energy so that it can be stored for use when needed;
A number of accessories which ensure the regulation and the safety of the system;
A back-up heater (gas, oil, or wood fuelled boiler, immersion heater or heat pump) which will bring the hot water to the temperature required when there is not enough sunlight to do so (mostly in winter).
Flat Plate and Evaporated Tubes:
There are two main forms of solar panels on the marker, Flat Plate collectors and Evaporated Tube collectors. The main component of each is the absorber, which absorbs solar radiation and converts it into heat. In a plate collector, the absorber is in the form of a flat, black plate in a shallow metal container covered with one or more layers of transparent glass or plastic; either air or a liquid is circulated through the cavity of the container. Heat is directly transferred from the absorber to the circulating liquid (air, water)
The absorber in an Evacuated tube collector consists of a relatively narrow strip of copper with a selective black coating bonded to a single copper tube. The tube contains a special fluid which evaporates when heated. This vapour rises and transfers heat to the water circulating in the systems primary circuit.
Evaporated tubes are more efficient than flat plate collectors; consequently they take up less space. They are, however, more expensive that flat plate. Generally speaking, to produce a given amount of hot water, whether using flat plate or evaporated tubes, the installation costs will be roughly the same.
Solar Heating (water)
In Ireland, solar collectors alone cannot provide all the hot water for a household’s needs throughout the year. Correctly sized they will supply 60% of heat / domestic hot water needs. They are normally installed in conjunction with a conventional back-up heating system.
Solar Heating (space)
In a solar central heating system, the heat generated by the solar panels is used to warm up water stored in a large tank. The heated water is circulated into radiators or underfloor heating to distribute warmth around the house, and is also used to produce hot water for bathing, showers, etc. A control system ensures the regulation and safety of the whole equipment. A solar space heating system is generally designed to cover between 30% and 40% of the annual space and water heating requirement; this can reduce fuel bills by a similar amount.
Solar Air Heating
For comfortable and healthy living, homes require heating and ventilation. Solar air heating systems use air instead of water to circulate the heat collected by roof mounted solar panels in order to provide space heating and ventilation simultaneously. They are particularly effective in well insulated houses which are built airtight and, when used in combination with a heat recovery ventilation unit can reduce heating bills considerably. They can also be used to produce hot water through an air-to-water heat exchanger.
Source : SEI Ireland
Heating Solutions Ltd
Solar Panels – Underfloor Heating – Heat Pumps
29 Suil na Habhann, Mill Rd, Limerick, Ireland
Tel: 086 3823062; Fax: 061 346011
Tuesday, November 07, 2006
Solar Technology
Our evacuated tube collectors are mass-produced products made in Baden-Württemberg, Germany. Their outstanding design, professional finishing, top quality and high energy yield, as well as their excellent price/performance ratio make them stand out. High-quality, corrosion resistant and tested materials ensure smooth operation over a long useful life. The well-known indestructibility of our solar tubes was confirmed by positive test results in the impact-from-hail test according to DIN EN 12975-2 and the thermal shock test (ITW test report No. 02COL 282).
In the development of the collectors, they used their many years of experience with CPC in combination with the latest findings from production technology.Sharp mirror edges are framed in the aluminium frame profile. The edges of the collector frame are sealed with rubber profiles. Only few screws are used in those places which need to be unfastened for maintenance; rivets are not used.
In the CPC w OEM, the hydraulic connections and the sensor are located at the centre on top of the collector. The hydraulic connections to the collector are fastened and unfastened with metal cutting ring connections. This is the only type of connection which is completely wear-and-tear-free and gas-proof.
The inlet and outlet pipes may be fitted on the left or the right of the manifold. Depending on the location of the inlet pipe the sensor is placed on the right or the left.
The pipe registers are mass produced with just a minimum number of soldering points. This results in high leakage-safety and a reduction of internal scaling.A low specific area leads to the desired low heat capacity.
The mirror is produced from a metal sheet with protective coating using accurate roll forming technology.Due to the special fastening technique the mirror can be exchanged without using tools. The heat conducting plates are made of aluminium so that even high stagnation temperatures have no effect on the metal’s characteristics. The heat conduction plate is folded into both copper tubes.
The tube holder can be mounted and demounted from the foot rail without using tools.Sharp edges are sealed with rubber profiles.
We also paid careful attention on details which are important for mounting the system: the solar installation is delivered with a tentered sun protection sheet to allow putting the system into operation even during maximum solar irradiation.Hand straps which can be attached to the collector frame ensure safe and easy transport onto and across the roof, and can be used as transport straps for quick crane mounting.
In the development of the collectors, they used their many years of experience with CPC in combination with the latest findings from production technology.Sharp mirror edges are framed in the aluminium frame profile. The edges of the collector frame are sealed with rubber profiles. Only few screws are used in those places which need to be unfastened for maintenance; rivets are not used.
In the CPC w OEM, the hydraulic connections and the sensor are located at the centre on top of the collector. The hydraulic connections to the collector are fastened and unfastened with metal cutting ring connections. This is the only type of connection which is completely wear-and-tear-free and gas-proof.
The inlet and outlet pipes may be fitted on the left or the right of the manifold. Depending on the location of the inlet pipe the sensor is placed on the right or the left.
The pipe registers are mass produced with just a minimum number of soldering points. This results in high leakage-safety and a reduction of internal scaling.A low specific area leads to the desired low heat capacity.
The mirror is produced from a metal sheet with protective coating using accurate roll forming technology.Due to the special fastening technique the mirror can be exchanged without using tools. The heat conducting plates are made of aluminium so that even high stagnation temperatures have no effect on the metal’s characteristics. The heat conduction plate is folded into both copper tubes.
The tube holder can be mounted and demounted from the foot rail without using tools.Sharp edges are sealed with rubber profiles.
We also paid careful attention on details which are important for mounting the system: the solar installation is delivered with a tentered sun protection sheet to allow putting the system into operation even during maximum solar irradiation.Hand straps which can be attached to the collector frame ensure safe and easy transport onto and across the roof, and can be used as transport straps for quick crane mounting.
Heating Solutions Ltd
Solar Panels – Underfloor Heating – Heat Pumps
29 Suil na Habhann, Mill Rd, Limerick, Ireland
Tel: 086 3823062; Fax: 061 346011
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