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I think because it works more like a heat exchanger taking heat from the exhaust gas, rather than a "standard" boiler with a furnace?
An EGB needs a pump to circulate the water through the pipes in the exhaust stack, whereas a furnace-heated boiler can use convection to move the fluid through the system..?
Might have something to do with lower temperatures in an EGB?
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∙ 11y ago
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In boiler feed water line whether a non return valve should precede or succeed the delivery valve of feed water pump?
In boiler feed water line the NRV is normally installed between Pump and stop valve if the line is short and an another NRV is installed at boiler entrance and after stop valve if the line is long or pump is 10 to 15 m away from the boiler.
What is Boiler feed pump?
Function - It adds the pressure to the feed water before it entyers into boiler feed pump suction Advantage - Ensures high margin NPSH A for boiler feed pump spinning at high rpm (5250Rpm) Drive for booster - Normally @1450 rpm Type of impeller- Mostly preferred Double suction
How do you manually add glycol to a commercial hot water system?
Pump it in while it is circulating and continually test the freeze point of the mix. If you make it too thick the solution will lose it`s heat transfer properties reducing system capacity. +10F is usually ok.
Application of plate heat exchanger?
The plate heat exchanger is used in multiple systems in the field of HVAC, including geothermal water heating systems, instantaneous domestic hot water systems, semi-instantaneous domestic hot water systems, swimming pool constant temperature maintenance systems, solar hot water systems, etc.Plate heat exchanger systems provide plate heat exchanger designs for each application:1. Geothermal water heating system: The heat exchanger acts as a separate device for the host of the heat pump and the open cold and heat source, which overcomes the corrosion of sensitive equipment such as the host by water quality.2. Domestic hot water system: The good heat transfer performance makes the plate heat exchanger gradually replace the traditional container heating system, with a smaller area and more economical investment.Instantaneous domestic hot water system-to ensure that users have hot water supply anytime, anywhere, compact system, no storage tank required, large boiler capacity required, large heat exchanger Semi-instantaneous domestic hot water system—requires smaller boiler capacity, smaller heat exchanger, easy to grow bacteria in the storage tank, and requires additional places for the storage tank.3. Swimming pool constant temperature maintenance system: Install a heat exchanger to make the pool water circulate independently. In order to avoid the corrosion of the plate by the chloride ion in the pool water, please choose the plate material carefully.4. Solar hot water system: As one of the clean energy sources, solar energy has attracted more and more attention. By using a heat exchanger, the loop for collecting solar energy and the loop for domestic hot water can be separated, thereby effectively protecting it. Cleanliness of the domestic hot water loop.If you want to know more, you can search：YOJO
What is stroke length of a pump?
The stroke length of a pump is the distance it travels up before it travels down. The distance traveling up takes in air or water depending on the type of pump. The down pressure expels the air or water.
How do you understand whether circulating pump is circulating water through economizer?
By measuring outlet temperature of water at downstream of pump and upstream of boiler.
What is the use of boilerfeed pump?
The boiler feed pump pumps hot feedwater into the boiler. The boiler pressure is to high for water to flow into it by gravity, so a pump is required.
What is a hydronic system?
A boiler with a circulating pump and pipes to convey heating water around a house, through radiators or underfloor pipes.
What is digester feed pump?
A digester feed pump forces water to a boiler. It works by transferring cool water to the boiler to be heated.
Water pump not circulating coolant?
If the pump is not circulating coolant insure that the thermostat is not stuck closed. If the thermostat is ok then the pump will have to be replaced.
When the circulation of water in a boiler is by a centrifugal pump then the boiler is known as?
externally fired
What is boiler feed water pump?
Boiler feed pumps are an important part of any boiler operation. They control the amount of water fed to the boiler and the manner in which it is fed.
How t tell if water pump is bad?
Water pump shaft loose? Water pump leaking? Water circulating in coolant system?
In boiler feed water line whether a non return valve should precede or succeed the delivery valve of feed water pump?
In boiler feed water line the NRV is normally installed between Pump and stop valve if the line is short and an another NRV is installed at boiler entrance and after stop valve if the line is long or pump is 10 to 15 m away from the boiler.
What is Boiler feed pump?
Function - It adds the pressure to the feed water before it entyers into boiler feed pump suction Advantage - Ensures high margin NPSH A for boiler feed pump spinning at high rpm (5250Rpm) Drive for booster - Normally @1450 rpm Type of impeller- Mostly preferred Double suction
How does the water flow in an old cast iron radiator?
The boiler has a circulation pump that circulate the water
How much does it cost to replace a circulating pump in a new water heater?
To replace the circulating pump it will cost between $150 and $300 depending on the hot water heater. It will also cost you labor fees if you have someone install it for you.
