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Ubify Media & Design Operations
UI/UX & DIGITAL MEDIA SPECIALISTS
About This Tool
Chemical and HVAC process engineers size shell-and-tube or plate heat exchangers using Log Mean Temperature Difference (LMTD) to evaluate effective driving temperature force. In physical thermodynamics, counterflow LMTD = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2), where ΔT1 is hot inlet minus cold outlet and ΔT2 is hot outlet minus cold inlet, applied in Q = U × A × LMTD × F. On this page, the calculator evaluates user thermal inputs using a 3-parameter comparative mathematical index model, returning immediate ratings with zero external network transmission.
How to Use
- 1
Input your primary temperature difference or thermal duty load in the first field.
- 2
Set your overall heat transfer coefficient or area multiplier in the second box.
- 3
Specify the fouling safety factor or design divisor rate (automatically protected against zero division).
- 4
Inspect the derived thermal rating, geometric root factor, and temperature exchange percentage.
Frequently Asked Questions
What formula does this calculator evaluate?
The calculator computes index = (primary dimension × coefficient) / max(0.01, safety factor), alongside geometric root sqrt(primary × coefficient) and load ratio percentage (primary / (primary + coefficient)) × 100.
Does this compute certified logarithmic LMTD or F-factor corrections for multi-pass exchangers?
No, this page implements a generic 3-variable comparative index model rather than computing natural logarithmic temperature differentials or multipass shell crossflow correction charts.
Are your industrial thermal parameters sent to a remote server?
No. All calculations execute 100% locally in your client-side web browser runtime with zero remote data collection.