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Fuel gas vacuum hot water boiler

The full name of the oil (gas) series vacuum hot water boiler is called a vacuum phase change boiler. Note two terms, one is vacuum and the other is phase change. The vacuum boiler forms a negative pressure vacuum environment inside the closed furnace body. The body is filled with heat medium water, and the heat medium water is heated by combustion or other methods. The heat medium water is evaporated and condensed to the heat exchanger, and then The water to be heated is heated by a heat exchanger. Vacuum hot water boilers supply hot water of different temperatures and different uses, such as central air-conditioning water, sanitary hot water, and process hot water. The structure of the lower half of the vacuum boiler is the same as that of a normal boiler. It consists of a combustion chamber and a heat transfer tube. The lower half is equipped with a heat medium (furnace water), and the upper part is a vacuum steam chamber. Type) heat exchanger. Because the boiler is operated under negative pressure as a whole, it is safe.

product description

Fuel gas vacuum hot water boiler

The full name of the oil (gas) series vacuum hot water boiler is called a vacuum phase change boiler. There are two terms in detail, one is vacuum and the other is phase change. The vacuum boiler forms a vacuum environment with a negative pressure inside the closed furnace body, supplements the heating medium water in the body, heats the heating medium water by combustion or other methods, and then evaporates and condenses the heat medium water to the heat exchanger. The necessary heat is heated by a heat exchanger.

The vacuum hot water boiler supplies hot water of different temperatures and different uses, such as intermediate air-conditioning water, sanitary hot water, and process hot water. The structure of the lower half of the vacuum boiler is the same as that of a popular boiler. It consists of a combustion chamber and a heat transfer tube. The lower half is equipped with a thermal preface (furnace water). Type) heat exchanger. Because the boiler group operates under negative pressure, it is safe. The thermal preamble (furnace water) in the furnace of the vacuum hot water boiler does not enter, exit, increase or decrease during the entire operation of the boiler, and is only enclosed in the vacuum chamber of the boiler. Heat is transferred between the exchangers. The thermal preamble in the furnace is effective deoxidized pure water, no corrosion, no scale, so that the boiler life is more than 20 years or even longer. In summary, the natural development trend of boilers with such performance is to replace the traditional drum-type and shell-type boilers.

Performance advantage

1. Boiler body: The combustion heating part of the vacuum phase change boiler body is made of excellent Q245 plate and 20 # steel pipe. The advantage is a large combustion chamber and a small heat load on the boiler hearth. Large heating area, small volume, compact structure, small water capacity and fast heating rate. In addition, the negative pressure evaporation chamber connected to the upper part as a whole has stable performance and operation. Because the negative pressure evaporation chamber has a large space, the inserted heat exchanger can be manufactured according to user needs. As usual, horizontal boilers use straight tube heat exchangers, which can be disassembled at both ends of the head and the tube, which is convenient for users to maintain and clean the water pipes of the heat exchanger.

2. Manufacturing and structure of heat exchanger: The heat exchanger is made of stainless steel, inserted into the negative pressure evaporation chamber in the form of a tube bundle, and the two ends are connected by flanges. Its advantages: easy disassembly, simple replacement, not easy to corrode, easy to maintain and clean, and durable.

3. Active control: The control part selects the advanced controller and touch screen control system to actively detect the temperature of the boiler water and the temperature of the water; actively detect the internal faults of the burner and the furnace body; the combustion time can be controlled through program settings; Load change, actively adjust the entire combustion process, reduce the number of starts and stops caused by load change, make the boiler operate normally, and reduce the loss of purge heat during start and stop.

4. Combustion equipment: Due to the special design of the vacuum phase change boiler, various imported and domestic fuel oil and gas burners can be configured through special mounting plates according to the type of fuel and user needs.

5. Effective energy saving: The effective vacuum hot water boiler technology is adopted. The boiler operates under vacuum, with low boiling point and latent heat of vaporization (condensation latent heat), which effectively improves the heat compliance and good heat transfer performance. The boiler's three-back wet-back design, useful to improve the radiation and convection heat transfer area, the boiler's heat compliance is as high as 95%.

6. Negative pressure operation of the unit, safety: The unit operates under vacuum, the heat medium is in a vacuum state, and there is no expansion or explosion injury. A constant amount of heat medium water is stored in the furnace, and there is no dry burning injury. Multiple active cherish assembly, which has safety comparable to other types of boilers.

7. Non-corrosion, non-scaling, long service life: The heat exchanger is made of stainless steel, and the once-injected heat medium water runs in a closed state, non-corrosive, non-scaling, and its service life is extended by nearly two than that of a conventional boiler. Times, product life is as long as 30 years.

8. Strong model, multi-purpose machine: vertical, horizontal, fuel, gas, methanol, water pipe, and smoke pipe models are available for users to choose freely. The heat exchanger and header are scattered, and the heating water and hot water The load can be switched at any time as necessary to meet the different requirements of users for heating water and clean hot water in use to ensure that the hot water is clean and stable.

9, small size, easy installation: modular design, high-performance heat exchange components, small unit size, making the product easy to transport and install. In a small space, multiple units can be used in parallel.

10. Unique environmental protection function: It adopts high-performance burner, flame-back structure design, full fuel combustion, and various environmental protection indicators meet the national tourist area emission standards.

11. Eliminates the complicated approval procedures: the unit operates under vacuum, simplifying the procedures for inspection and annual review of the pressure window, and the operator does not need to operate with a certificate.

Technical Parameters

Item / Model ZKW0.7-8560-Y (Q) ZKW1.05-8560-Y (Q) ZKW1.4-8560-Y (Q) ZKW1.75-8560-Y (Q) ZKW2.1-8560-Y (Q) ZKW2.8-8560-Y (Q) ZKW3.5-8560-Y (Q)
Heat medium water capacity (L) 410 520 568 700 830 980 1250
Rated heating value (Mw / h) 0.7 1.05 1.4 1.75 2.1 2.8 3.5
Rated heating value 60 90 120 150 180 240 300
Fuel consumption Light diesel (Kg / h) 64 96 128 160 192 256 320
Heavy oil (Kg / h) 67.3 100 134 168 202 269 363
Natural gas (m3 / h) 165 116 155 193 232 310 387
City gas (m3 / h) 77 247 330 412 494 659 824
Liquefied gas (m3 / h) 29 44 58 73 88 117 146
Heat Exchanger Material / structure Stainless steel
Working pressure (MPa) 1.0
Heating only Big heat 36 54 72 90 108 144 180
Warm water circulation 36 54 72 90 108 144 180
Pressure loss 2.2 3.0 2.0 2.6 2.5 3.5 3.3
Heating outlet (DN) 65 80 80 100 125 125 133
Heating area (㎡) 6000 9000 12000 15000 18000 24000 30000
Dedicated for hot water Big heat twenty four 36 48 60 72 96 120
Water supply (m3 / h) 6 9 12 15 18 twenty four 30
Hot water temperature 50
Pressure loss 2.0 0.6 1.5 1.8 1.5 1.8 2.0
Outlet diameter (DN) 40 65 65 80 100 100 125
Voltage Voltage (V) 220/380
Total power consumption 2.2 (2.6) 3.7 (4.1) 5.0 (6.5) 7.5 (9) 11 (2.5) 15 (16.5) 18.5 (20)
Blower power consumption 2.2 3.7 5.0 7.5 11 15 18.5
Power consumption of oil pump 0.4 0.4 1.5 1.5 1.5 1.5 1.5
size Chimney diameter (mm) 350 350 400 450 500 550 600
Length (m) 2700 3200 3400 4050 4700 4900 5500
Width (m) 1365 1365 1600 1600 1600 1800 2020
Height (m) 2345 2400 2500 2580 2580 2630 2700

working principle

Fuel gas vacuum hot water boiler