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Questions tagged [boilers]

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0
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1answer
59 views

Thermal oil in Boiler not reaching desired temperature

The thermal oil Feroline U in Boiler is not gaining the desired temp of 240 Degrees. We have physically measured the temp using digital thermometer at a distance of 20 cm where the boiler temp sensor ...
0
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0answers
31 views

Ineffective purging of a flame monitor lens

There is a wall-opposed flame monitor detecting coal, oil and gas combustion in the burners, attached to the furnace walls in a coal-fired power plant. I'm looking for suggestions to clear the dust ...
0
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1answer
62 views

Model of a domestic boiler

I have to design a model of a domestic boiler. I represent the boiler as a heat exchanger (HEX1), as shown in the figure. In many articles I have found that it is schematized with this equation: $$ ...
1
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1answer
90 views

Energy consumption of a boiler

I have a question that maybe will be very easy for you. I am working on a district heating model using Dymola, and now I have to incorporate a boiler into my model, such as this one. I was asked to ...
0
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1answer
45 views

Can a water pressure switch be used as a low-water cutoff means for a steam boiler?

Steam boilers obviously need to be protected from the catastrophe of running out of water -- you then either get a meltdown if the boiler is fired unwatered for an extended period of time or a boiler ...
1
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1answer
200 views

How to calculate the start-up cost of a natural gas boiler

How I can calculate or find a value for the start-up cost of a natural gas boiler? The boiler will have a capacity of about 700 kW and is intended for heating the water for a greenhouse.
1
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1answer
75 views

why more steam is required for the steam turbine when electric power consumption is higher

I'm recently under industrial traning at a plywood mill. My supervisor is from foreign country so there are some difficulties for me to understand what he is trying to say. In the power plant, the ...
3
votes
1answer
124 views

Is Vapor Compression Distillation inherently more efficient than a thermal-only boiler-condensor?

I'm having a hard time understanding the benefits of VCD (like Slingshot) over a conventional boiler in terms of volume of condensate produced per unit of energy input. I've found quite a few ...
1
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3answers
174 views

Rate of flow of steam going from one pressure to another

A closed steam boiler in a coffee machine idles at around 124 °C, the steam and water inside at 1.2 barg. When a steam valve is opened, steam rushes out through a steam wand inserted in milk, to ...
7
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2answers
630 views

Questions about making stainless steel boiler

I am currently working on a project (or actually returning to a project) and need to have a heat exchanger boiler made. The hx boiler will be relatively small, a 10" long cylinder around 4" in ...
6
votes
1answer
236 views

Why do boiler exhaust stacks use tapered transitions?

We have a boiler exhaust stack with a base dimension of 120" ID and an overall height of 84'. 21' up, the stack begins a slow transition to 7'6" ID. The transition takes approximately 35' to reach ...