Selection, Capacity Estimation, and Purchase of Double-Wall Source

The double-wall source is known as one of the important pieces of equipment in the engine room, which is responsible for supplying hot water. The double-wall source is an indirect heat exchanger that heats city water indirectly without any direct contact with hot water or flame. Stay with us to choose, determine the capacity, and buy a double-wall source.

A guide to selecting and buying a double wall hot water source

The double wall source of hot water consists of two nested cylindrical chambers, which are the outer chamber for the passage of hot water from the boiler and the inner chamber for the passage and maintenance of the spa, and two completely separate passages for the passage of water and The hot water boiler of the motor house is installed on the source.

Important note: when ordering a double-walled hot water source, in addition to the required capacity, type and thickness of the body sheet of the source, the dimensions of the double-walled source should also be considered in order to allow the equipment to pass through the engine room door, ease of installation and also the possibility of using it. including the base and the required space above the source); It should be noted that it is impossible to return the source when placing an order and manufacturing.

Accessories of the double-walled hot water source

Safety valve:

When the temperature exceeds the set limit, the safety valve opens automatically through its sensor and prevents the explosion of the double-walled source.

Gate valve:

A gate valve is needed to turn the water flow off and on. A gate valve is installed and used to open and close water when necessary.

The outlet route of the hot water:

The path of the hot water source is installed in the upper part of the source, and the function of this channel is to send hot water from the double-wall source of hot water into the building.

Hot water inlet route:

The hot water inlet duct is installed in the lower part of the double-wall source, and the hot water inlet after rotating around the source and also conducting heat exchange leads to the hot water return duct located in the upper part of the source inside the boiler.

Drainage and cleaning duct:

In the lower part, the source is installed, whose task is to drain and clean the water.

Advantages of a double-wall hot water source

• The ability to keep hot water without the need for a circulator pump
• Very low pressure drop
• Low cost of repair and service
• Reasonable purchase price compared to other hot water heating systems

The water volume of the hot water source is double-wall

The amount of water volume or the capacity of the double-wall source is calculated and estimated according to factors such as the number of units, the type of building used, the demand factor, the simultaneity factor, the consumption factor, and the number of consumers of hot water and using the table included in the Damatajhiz HVAC website; Therefore, it can be said that the number of units and the type of user is the most important selection component to determine the volume of the double-wall source. Usually, in order to supply hot water for uses less than 600 liters, it is more common to use a double-walled source.

The Table for Estimating and Determining the Capacity of a Double-wall Source (or Hot Water Source)

The thickness of the hot water double-wall source sheet

The double-wall source has different thicknesses, which usually vary from 2 to 3 mm for the outer wall of the source and from 4 to 5 mm for the inner wall, according to the capacity of the source in different models of a manufacturer.

To check and calculate the thickness of galvanized steel sheets in the construction of the source, it is possible to pay attention to things such as the water pressure inside the boiler and the temperature of the fluid inside the source.

Material of double-walled hot water source sheet

The sheets used in the construction and production of the double-wall source are of the galvanized type. This galvanized sheet is the same as black iron, but the shiny metal coating on this sheet causes galvanization. Galvanized makes it resistant to corrosion and decay. The galvanized sheet used in the double-wall source is made by hot-dip galvanizing.

To prevent damage and loss of the layer on the galvanized sheet in the welding parts, edible epoxy paint is used for the inner layer and industrial epoxy for the outer part, which protects against rust.

Points to consider before buying a double-wall source:

• It needs more space than the plate heat exchanger
• In some cases, when the dimensions of the source are large, its work efficiency decreases.
• The source may be vulnerable or punctured.
• It is difficult to repair a damaged or perforated wall
• When placing a purchase order, you must pay close attention to the diameter and dimensions of the source so that after delivering the source, it is possible to pass through the door of the engine room and install it in the desired location.

Buy a double-wall hot water source

There are different types of double-walled springs that are used to supply health spas, which are designed and produced in different sizes and dimensions. In order to choose and buy a double-walled hot water source, you must first determine the capacity and dimensions of the required source. On the website of Damatajhiz's specialized collection, the technical information of dozens of models of double-wall sources from reliable brands with original warranties has been presented, so that you, dear ones, can enjoy the good feeling of optimal and smart shopping.

The price of a double-wall hot water source

The double-wall source, like other heating equipment, has different capacities, technical specifications, and prices, It should be mentioned that the price of the double-wall hot water source provided on the website of Damatajhiz HVAC collection is up-to-date and this price also includes the guarantee that the best price and quality of the site. The thermometer is valid.

Tips that you need to know for better maintenance of a double-walled hot water source:

- To prevent the loss of thermal energy and reduce fuel consumption, it is very important to insulate the double wall source.

- It is necessary to install a one-way valve to prevent the return of hot water into the pipes.

- To prevent decay caused by water hardness, we can increase the lifespan of the double-wall source by using a water hardness device.

- For descaling and increasing efficiency, an acid wash water source should be used.

- Keep in mind that it is absolutely necessary to install a temperature and pressure safety valve on any source to prevent sudden events.

Dear user:

• While thanking you for the confidence you have in the technical opinions of Damatajhiz HVAC sales experts, it should be mentioned that the principles of determining and choosing the desired product brand based on history, brand strength, service, and product price are ultimately determined by the buyer. But in double-walled sources, most of the users and buyers choose and buy best-selling brands such as Damatajhiz HVAC due to their quality, price, and after-sales service.
• If, after reading the above material, you have more questions about deciding on the purchase of double-wall sources, you can contact the Damatajhiz HVAC group and extension numbers 107-108-121-122, from the sales experts of the heating equipment and engine room department. Get advice and ask your questions.

"Buy with confidence and peace of mind"

Trademark registration certificate - Stewardship business license from the Virtual Business Association - Business license from the heating and air conditioning equipment industry

The presence of Damatajhiz HVAC in the international exhibitions of construction facilities and cooling and heating systems from 2014 to 2016.

In addition to a valid business license from the heating and air conditioning trade union, the Damatajhiz HVAC specialized collection has an electronic trust symbol and started its store site in 2013 in the head office of Tehran.

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