JHL PEX Tools » Radiant Heating

As a result, we obtain four estimates of temperature for the choice of plated heat exchangers in the design.

admin — Thu, 09 Jun 2011 20:08:26 +0000

It is these temperatures should be included in the specification that is passed to the manufacturer for selection of water to air heat exchangers.
Q: And what after all do in a situation where installed at the facility water to Air heat exchangers not provide hot water to the desired temperature?
The first step is to review, during which identify:
- Pollution degree plated heat exchangers deposits (as described above);
- Match input coolant temperature, and their costs calculated.
To increase the heat output plated heat exchangers can recommend the following actions:
1. Chemical cleaning (or mechanical treatment).
2. Raising the temperature and flow of heating fluid.
3. Replacement plated heat exchangers.
4. Reconstruction of the plated heat exchangers to transfer to the 2-way scheme, and an increase in the number of plates.
The last event we were tested on boiler number 1987 Ergach. At that, with respect to the project were equipped with two plated heat exchangers heating brands FPS-43-163-1E firm «FUNKE» the thermal capacity of 8.0 MW each. During the operation revealed that there is a rapid overgrowth of the heating surfaces plated heat exchangers deposits, resulting boiler was “locked up” – could not heat the water network above 65-70 ? C (for schedule 95/70 0 C).
The survey showed – with an estimated heat transfer coefficient plated heat exchangers 6600 W / (m2. 0C), its actual value was only 1736-2343 W / (m2. 0C), which corresponds to the relative nomu parameter (F/F0) = 0; 26-0,36. When disassembling the plated heat exchangers on the heating surface were detected scale-nye sediment thickness 0,2-0,3 mm with the following composition: 78% calcium, 22% iron oxides.
To normalize the heat from the boiler in the first place we have been made of the measure to increase spending (by about 30%) and the boiler water temperature to the maximum – from 110 to 115 ? C, as well as adjustments of reagent water chemistry. While all of these activities is limited, so the effect (failed to raise the temperature of network water for 5 .. 7 ? C), in conjunction with the regular-molecular =it possible to avoid disruption of heating a residential area.
Radically the problem was solved only in the summer of 2003. When, in collaboration with the well-known manufacturers of plate heat exchangers, “Reed, we performed a re-design of plated heat exchangers to transfer to the 2-way traffic scheme coolants and quantitative increase in plates with 163 to 250.
The reconstruction failed to fully normalize heat from the boiler room.
To the negative effects of reconstruction plated heat exchangers include the following:
- Hydraulic resistance of the water to air heat exchangers has increased from 2,0 to 6,8 m v.st., ie 3,4 times;
- Complicated by the operation of dismantling heat exchangers due to device ports and supply lines on both sides of the heat exchanger.

Grundfos mq3-45 – boost the quality of the piping system with this pump!

admin — Fri, 08 Apr 2011 19:45:05 +0000

Using a circulator pump for a domestic water recirculation system may not be enough sometimes, and this is when the wise thing to do is to research some more and find a solution to the problem. The right attitude should be to purchase a booster pump such as the Grundfos mq3-45 model.

Grundfos MQ3-35 Booster Pump model 96860172

Posted by Edmundo Plumber in Grundfos pumps category

In contrast with a normal water pump, Grundfos mq3-45 has a compact motor that is equipped with a boosting option. The advantage of this system is that it can safely be used in domestic plumbing applications because it not only circulates the water, but also boosts its speed if necessary. This way, the potable water of some systems will have no risks of becoming contaminated because of a slow flow.

It is natural that because of this complex and useful option that the motor of Grundfos mq3-45 has, it needs to be protected somehow. This is the main reason why its manufacturers have installed a protective function and an automatic reset option. They both guard over the well-being of the unit, keeping its performance at its best and ensuring its long life.

Similar to many other water pumps, the Grundfos mq3-45 has a temperature range at which the liquid should flow in order for the device to be secure and to work properly. For this model, the range is between 0 and 35 degrees Celsius. Additionally, the maximum pressure at which it can operate is of 109psi, because of the glass fiber that forms part of the impeller and pump housing.

Grundfos MQ3-45 Booster Pump – Grundfos 96860195

By pexpipeman, 02/01/2011

To conclude, this model of water pump is best for those houses with a plumbing system that will not work properly because of the slow flow of water. Due to its boosting system, this pump will not only purify the water, but it will also keep it clean and safe to drink.

Shopping for the best water pump: Taco 006-ST4

admin — Fri, 08 Apr 2011 19:40:48 +0000

When working on building a house of your own, you need to know a few basic pieces of information. The most notable one is that you need to have a highly resistant and trustworthy foundation. After the house is complete, there are a few other issues you should be preoccupied about and which regard the technical aspects of the construction. One of them is water circulation through the system of pipes. Although the Taco Company offers a large variety of products, Taco 006-ST4 is a remarkably smart choice.

Like most of their products, Taco 006-ST4 is designed to fit the needs one may have when dealing with water circulation. Therefore, this stainless steel pump is not only practical and easy to install, but it is also suitable for purposes such as circulating heated or cold water, usage in domestic pipes and hydro heating.

Bronze Taco 006-ST4 Circulator Pump

Due to the material it was created from, the Taco 006-ST4 has an enhanced resistance. Stainless steel makes it durable even if it has to conduct water from 4 to 104 degrees Celsius, or with a pressure of up to 125 psi. Maybe the most useful feature this water circulator has is that it has a replaceable cartridge, which means you don’t have to change it completely if it breaks. This is an impressive innovation, and it is an important advantage of the product.

Taco 0014 Stainless Steel Circulator Pump

All in all, if you are to choose a quality water pump, you should opt for a stainless steel Taco model. Moreover, the Taco 006-ST4 may be the perfect fit for your requirements. Not only can they resist to high temperatures and pressures, but they are also easy to use and safer than other types of pumps available!

The different types of materials used for heat exchangers

admin — Fri, 08 Apr 2011 19:36:01 +0000

Heat exchangers are widely used nowadays across the globe. They have applications both in the industry and around the home. Every appliance in your house which uses energy may work with a heat exchanger.

Depending on the model of the heat exchanger and its purpose, there are different categories of materials that are used in order to manufacture the devices. Thus, materials vary highly for brazed plate heat exchangers, plate and frame heat exchangers, shell and tube heat exchangers and others.

For the brazed plate heat exchangers, the small plates are made from 304, 316 and 316L stainless steel. This prevents corrosion, a phenomenon that occurs when water and metal come in contact. The plates are copper or nickel brazed, thus ensuring a higher lifespan of the device.

As far as shell and tube heat exchangers are concerned, manufacturers must keep in mind the fact that they are used primarily in industrial plants, such as oil refineries or chemical plants. The most popular materials used are the 304 and 316 stainless steel, because those alloys have more nickel and chromium, thus making the metal more resistant to oxidization.

For the plate and frame heat exchanger and air to water heat exchanger, stainless steel and copper pipes are the materials of choice during manufacturing. The explanation is the desire of producers to offer the best quality at the best price. This does not mean the device is cheap, it means that one will not need to replace it frequently.

Copper, stainless steel, nickel and chromium alloys, those are the materials used in the production process of heat exchangers. Thus, those devices have a warranty between 5 and as much as 20 years. The devices are reliable and work efficiently for a long time.

PEX tubing recommendations for house installs

admin — Mon, 14 Feb 2011 16:31:34 +0000

Wirsbo pex tubing is the better pipes to purchase within the market place. Moreover, these goods can be ordered on the internet, for people that don’t like traffic or standing in line in a shop.

3/4″ x 300ft PEX Tubing with Oxygen Barrier

The advantage for clients is that caused by competition three may get fantastic selling prices along with superb products.

3/4″ x 500ft PEX Tubing with Oxygen Barrier

3/4″ x 300ft OxyPex Tubing with Oxygen Barrier

There is not likely much for the PEX systems and companies which usually sell certainly as PEX tubing or some others attempt in making their item the most effective yet.

3/4″ x 500ft OxyPex Tubing with Oxygen Barrier

But yet, despite why you buy PEX pipes or accessories, purchasing good quality products is really important.

3/4″ x 1000ft OxyPex Tubing with Oxygen Barrier
One example is, like this example mentioned, when moving into a new home, if your previous owner hasn’t been inexpensive and invested towards the plumbing related installation, you might want to buy almost nothing for plumbing contractor for many years in the future.

Brazed Plate Heat Exchangers Brazetek

admin — Thu, 07 Oct 2010 21:54:21 +0000

Brazed plate heat exchangers (PHE) – a result of translating years of experience and latest technologies of heat transfer. At first glance, the design of devices is traditional, but with a more detailed study of the plates, napkins and substructure units advantage over their counterparts becomes evident. As always, attention to detail is what makes it possible to produce Alfa Laval to be always ahead of the competition.

Highly efficient heat transfer Plate Heat Exchangers

In the brazed plate heat exchangers – the two media are separated by a corrugated plate. The thinner the plate, the more effective is the heat exchange between the media and the better management of this process. It is equally important to achieve high turbulence flow and uniform heat distribution to the entire surface of the plate. Specialists has successfully solved this problem by creating a unique plate shape.

The plates are designed for a wide range of sizes and models. Drawing, stamping and depth of the plate material can vary depending on the destination device. The standard plate is stamped from stainless steel, but can be made from pressed another material such as titanium. The modular design of the heat exchanger can be used in various fields.

All plates for vehicles (as opposed to devices other firms) stamp only by pressing. This ensures that all plates are identical to each other, not their wrinkling and the package contains no points of contact between adjacent plates. When the plates are collected in a single package the lack of contact means thermal flexibility, mechanical strength and the ability to design the device to withstand high internal stress.

Know All about Types of PEX heat Transfer Plates

admin — Thu, 07 Oct 2010 21:33:04 +0000

The PEX heat transfer plates are units which are used in water plumbing applications to supply proportionate amount of heat in entire floor area. Usually such plates are brought in various under floor applications in chilly areas. Since, the temperature in such locations is extremely freezing, so people make use of water to generate heat and warm up their places.

You can make use of these plates in your water supply system so as to make them more efficient and cost effective. Such plates are obtainable in tow different forms from the market.

Stamped Transfer Plates

These are thin sizes versions which are extensively used in radiant floor heating applications of sandwich typed. Normally the finished floor is made with hardwood and laminates which require less time to get heated up. So, such PEX heat transfer plates are placed in between the finished floor and sub floor so that heat can be transferred to various floor levels. They are shorter in length but wider in size which is why they are ideal to be used in such projects. More versatility in installation is also rendered by these plates.

Flooring: Tile

admin — Thu, 24 Jun 2010 21:03:11 +0000

A wide range of choice offered to Canadian buyers among construction flooring. One popular coating materials is a tile. Design options for tiles are well advanced, we can now choose tile “of parquet, ceramic, marble with a smooth surface,” under a stone “, etc.

Basic rules you need to know when choosing floor tiles. It should be read carefully with the various icons and signs present on the packaging. Foot on a background of black is a sign of floor tiles, foot on the background to the bar – means high durability and wear, a small tongue of flame from the numbers 1 and 2 – how many times the tile yield burning. If there are several signs on the packaging, it says that the material is of better quality.

Individual heating system

admin — Thu, 24 Jun 2010 21:00:54 +0000

Correct design and build an individual heating system is not easy, for it usually invited experts. But they have many difficulties in their work. To function properly and heating are not afforded the owners home troubles, you need to slope properly to withstand pipes, install septic tanks, to make the heating system airtight. All these conditions are much easier to perform, if we use no metal, and PEX tubing, which today have become very popular.

A remarkable property of plastic piping – the ability to maintain integrity for decades. This made it possible to hide the heating network in the thick walls, under lining materials, that is, do bathrooms and other facilities more aesthetic. Plastic is not affected by corrosion, it does not appear stray currents, and the inner surface of such pipes is so smooth that the heating masses pass through it freely, therefore, less likely to happen is clogged. PEX tubing were much cheaper than metal, and work on their installation is much faster.

Heat insulation materials

admin — Mon, 21 Jun 2010 20:41:12 +0000

On the territory of our vast country so far, wooden houses are heated by the Canadian stove, but to no freezes a hut, the walls are pockmarked with moss and tow. Tradition wall heat insulation materials and to this day used in the collection of home from a bar. But for a comfortable stay that is not enough, Canadian stove is nice, but does not correspond to our time. It is therefore worth to talk about modern heating system, which should be easy to maintain, safe and technically correctly executed. Home of the timber will be enough hot water heating, and furnace and fireplace can be used as decoration.