Maximum Demand for Buildings 

By on

CrystalBall
Vanitas with a Crystal Ball
Vincent Laurensz van der Vinne
(1628 – 1702)
Estimating maximum demand is a topic frequently discussed. Working out how much power to allow for a building can be very subjective . Allowing too much power results in additional equipment, increased space requirements, greater system losses and extra cost. On the other side, not enough power results in operational problems. Trying to find the right amount of power is like gazing into a crystal ball and everyone will see something different.

Early in a project power demand is estimated on a w/m2 basis. Each building needs to be considered on it merits and appropriate allowances worked out (for example a office designed for high end banking clients will require more power than a general purpose office).

While there are no fixed guidelines it is good to have some sort of starting point. The table below provides an initial set of demand figures to start playing with. Hopefully it may help someone or at least give some food for thought.

 


In this short introductory book, Estimating Power Demand in Buildings, Steven McFadyen provides a simple and clear understanding of the process by covering power theory and well- established procedures.

The book is available in paperback and eBook format at all Amazon stores. 

Table of Contents
The Need to Estimate Electrical Demand
Electrical Power Theory
Estimating Power Demand
Spreadsheet
Electrical Power Energy Targets — An Alternative Method
Energy Demand
Appendix - Typical Demand Figures (W/m2)   



spreadsheet

We've produced an Excel spreadsheet for estimating building total connected load and maximum demand.

If your interested in obtaining a copy, you can get it here.  Alternatively it is available free of charge with the purchse of the book "Estimating Electrical Power Demand In Buildings".



Steven McFadyen's avatar Steven McFadyen

Steven has over twenty five years experience working on some of the largest construction projects. He has a deep technical understanding of electrical engineering and is keen to share this knowledge. About the author

myElectrical Engineering

comments powered by Disqus

  1. ram31's avatar ram31 says:
    7/13/2013 1:12 PM

    Does the word " Power " in above table includes Air condiitoning loads(FCUs,Dampers etc)?Please enlighten.


Comments are closed for this post:
  • have a question or need help, please use our Questions Section
  • spotted an error or have additional info that you think should be in this post, feel free to Contact Us



Getting Started with Patents

If you have a great idea or invent something the last thing you want is someone to steal the idea. One of the things you can do is protect the intellectual...

Fire Resistant and Fire Retardant Cables

Fire resistant and fire retardant cable sheaths are design to resist combustion and limit the propagation of flames. Low smokes cables have a sheath designed...

Three Phase Power Simplified

A single phase system is perhaps the most common type of system most people are familiar with. This is what people have in their homes and what appliances...

Closed Doors

"I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong...

Thermoplastic and Thermosetting Insulation

While there are a vast array of cable insulation materials, these are often divided into two general types; Thermoplastic or Thermosetting. For example...

Paths of Flight

GE have put together a time-lapse video shown flight take-off and landings at some airports. An interesting view:

Cold Fusion (or not?)

Recently I have seen a few interesting articles on viable cold fusion; the combining of atoms at room like temperatures to create boundless energy. Now...

Gas Insulated or Air Insulated Switchgear

Various arguments exist around SF6 Gas Insulated (GIS) and Air Insulated (AIS) medium voltage switchgear. Recently we had to change a GIS design to AI...

Frame Leakage Protection

While not as popular as it once was, frame leakage protection does still have some use in some circumstances.  In essence frame leakage is an earth fault...

Photovoltaic (PV) Panel - Performance Modelling

In an earlier note on the site [Photovoltaic (PV) - Electrical Calculations], the theory of solar (PV) cell calculations was introduced.  In particular...

Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note