Lab · Thermal Engineering
Heat Exchanger Lab
Single-phase parallel and counterflow streams with constant capacity rates, prescribed conductance and a conserved heat duty.
Exchanger specification
Overview
Heat-transfer rate Q̇
50 kW
Hot stream → cold stream
| Hot outlet | 350 K |
|---|---|
| Cold outlet | 350 K |
| Exchanger effectiveness εHX | 0.5 |
| NTU | 1 |
| Cmin / Cmax | 1000 / 1000 W/K |
| Capacity ratio Cr | 1 |
| Maximum duty Qmax | 100 kW |
| Terminal ΔT₁ | 50 K |
| Terminal ΔT₂ | 50 K |
| LMTD | 50 K |
Opposite stream directions: cold inlet is at x=1. Schematic not to scale.
| Hot inlet · x=0 | 400 K |
|---|---|
| Hot outlet · x=1 | 350 K |
| Cold inlet · x=1 | 300 K |
| Cold outlet · x=0 | 350 K |
Assumptions
- · Steady single-phase streams with constant capacity rates and uniform U; no heat loss or phase change.
- · Coordinate x runs from hot inlet (0) to hot outlet (1).