3 votes
Accepted

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

For accurate cost estimation you will need to find a vendor and have them supply you a "budgetary quote" for your 700 kW boiler. The vendor can usually get this type of quote to you more quickly than ...
  • 7,499
3 votes

What determines the cost of the wind turbines?

Where does the power for a wind turbine come from? Answer - the wind. So how do you get 15kW from the wind rather than 11kW? Answer - you either need a location with a higher wind speed, or you need ...
  • 3,135
3 votes
Accepted

Trying to understand how much it costs to run my clothes dryer

You measured one load to take 1.8 kWh. That implies that 7 loads would take 12.6 kWh. If these 7 loads are repeated 52 times per year, then a whole year of operating takes 655 kWh. As a sanity ...
  • 11.3k
2 votes

Estimate Annual Maintenance Cost

Machinery manufacturers provide a maintenance schedule, just like car manufacturers give you a service book. Once you have that then you can estimate the time required for each service operation, ...
  • 14.2k
2 votes

When is a heat exchanger worth it?

If this is a student design problem to see whether you understand the principles, make it as easy as you can, use steam and cooling water. Calculating all the pressure drops on the weird pipe systems ...
  • 229
1 vote

When is a heat exchanger worth it?

Cost is not usually the deciding factor. Usually we need to keep the fluids separate for a reason: one fluid needs treating the other doesn’t Or the systems are at different pressures Or the fluids ...
  • 14.2k
1 vote

How to write a Cost engineering support plan?

Cost engineering is "the engineering practice devoted to the management of project cost, involving such activities as estimating, cost control, cost forecasting, investment appraisal and risk ...
1 vote

How much aluminum does a HV, MV or LV transmission line use?

Ok, since nobody answered, I investigated this more on my own. Note: the answer is just an estimate and might have incorrect assumptions. In particular, I'm assuming 400 kV means 400 kV line-to-line ...
  • 273
1 vote

What determines the cost of the wind turbines?

There are many points which directly affects the cost of wind turbine. Before installing any wind turbine plant for 1 to 2 years of data analysis of wind density , direction and speed are done by ...
1 vote

How to estimate the time cost of interrupting a task and picking it up again later

The amount of information you specified is too limited. If you had more information, maybe you could do it, but not as stated. Machining tasks can vary greatly. I can imagine some parts where it ...
  • 2,526
1 vote

How to estimate the time cost of interrupting a task and picking it up again later

No, because the number to be produced changes the percentage ie the setting up time can be longer than the machining time for 1 piece but 3% for 100 pieces and 0.003% for 1000 pieces...
  • 14.2k
1 vote

Understanding metalwork manufacture -- How are Purchase Quotations prepared?

As Mahendra Gunawardena said, there's not one universally used method of pricing manufacturing projects, but there are some pretty common facts that result from the economics of the situation. ...
  • 4,501

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