David Okonkwo
David is a mechanical engineer with a focus on energy systems. He has experience in the renewable energy sector and now consults on home energy efficiency. His writing breaks down engineering concepts using practical household examples, making topics like electricity consumption and heating systems genuinely understandable. This profile shows 6 published articles on Calcipedia covering electrical & energy, science, unit conversions, plus the contributor's role in calculator and reference-content review.
Mechanical Engineer
About David
David is a mechanical engineer with a focus on energy systems. He has experience in the renewable energy sector and now consults on home energy efficiency. His writing breaks down engineering concepts using practical household examples, making topics like electricity consumption and heating systems genuinely understandable.
Coverage areas
- Electrical & Energy
- Science
- Unit Conversions
Why readers see this profile
- David is a mechanical engineer with a focus on energy systems. He has experience in the renewable energy sector and now consults on home energy efficiency. His writing breaks down engineering concepts using practical household examples, making topics like electricity consumption and heating systems genuinely understandable.
- Background in renewable energy engineering. Now consults on home energy retrofits. References the intersection of engineering theory and real-world constraints.
Role in calculator content
Contributes topic expertise and explanatory writing to the parts of Calcipedia that match this profile.
- Checks that the page language matches the underlying formula and assumptions.
- Makes sure the user is told when the estimate stops and professional judgement starts.
Articles by David
Guide
Insulating Your Home: Where to Start and How Much You Need
Calculate your insulation needs room by room, understand how BTU losses drive your heating bills, and compare the cost of a heat pump upgrade against your current system.
David Okonkwo Guide
How to Find Sunrise, Sunset, and Golden Hour Times
Check sunrise, sunset, day length, and golden hour for any location so you can plan photography, solar work, gardening, or outdoor time with confidence.
David Okonkwo Guide
Ohm's Law Made Simple: Voltage, Current, and Resistance Explained
Understand the fundamental relationship between voltage, current, and resistance — with calculators to solve circuits and size wiring safely.
David Okonkwo Guide
How to Dress for Wind Chill, Heat Index, and Dew Point
Understand how wind chill, heat index, and dew point affect what the temperature actually feels like — and dress accordingly.
David Okonkwo Guide
Heating and Cooling: How BTUs Work and How Many You Need
Understand what BTUs actually measure, how to size a heater or air conditioner for your space, and why getting it right saves energy and money.
David Okonkwo Guide
Understanding Your Home Electricity Bill and How to Lower It
Decode your electricity bill, understand kilowatt-hours and BTUs, and find the appliances that are costing you the most — with calculators to run the numbers.
David Okonkwo